Samsung LTE ENB Alarm Manual for PKG 5.0.0_v1.0

Samsung LTE eNB Alarm Manual for PKG 5.0.0

Radio Access Network

Provides a detailed reference and resolution guide for alarms that can be raised on the Samsung LTE eNB. This includes the DU and radio units.

Document Version 1.0 August 2015

Document Number: 2600-00I33NGAB

© 2015 SAMSUNG Electronics Co., Ltd. All Rights Reserved. No part of this document may be photocopied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means whether, electronic, mechanical, or otherwise without the prior written permission of SAMSUNG Electronics Co., Ltd. No warranty of accuracy is given concerning the contents of the information contained in this publication. To the extent permitted by law no liability (including liability to any person by reason of negligence) will be accepted by SAMSUNG Electronics Co., Ltd., its subsidiaries or employees for any direct or indirect loss or damage caused by omissions from or inaccuracies in this document. SAMSUNG Electronics Co., Ltd. reserves the right to change details in this publication without notice.

SNMTC-v3-0312

This manual should be read and used as a guideline for properly installing and/or operating the product. Owing to product variations across the range, any illustrations and photographs used in this manual may not be a wholly accurate depiction of the actual products you are using. This manual may be changed for system improvement, standardization and other technical reasons without prior notice. Samsung Networks documentation is available at http://www.samsungdocs.com

Contents Preface

vii Relevance ....................................................................................................................................... vii Conventions in this Document ....................................................................................................... vii Revision History ..............................................................................................................................viii Personal and Product Safety ........................................................................................................... ix Equipment Markings ...................................................................................................................... xiii

Chapter 1

Introducing Alarms 1 Overview .......................................................................................................................................... 1 Alarm Codes ..................................................................................................................................... 2 Unit Types ........................................................................................................................................ 2 Alarm Categories .............................................................................................................................. 3 Alarm Severities ............................................................................................................................... 3 Auto Alarm Suppression ................................................................................................................... 4 Inhibiting Alarms .............................................................................................................................. 4 Monitoring Alarms ........................................................................................................................... 4 Dealing with an Alarm ...................................................................................................................... 5 Log Collection Method ..................................................................................................................... 5

Chapter 2

Alarm Reference 6 A2100102R UMP PROCESS DOWN................................................................................................... 6 A2100217R UMP CPU TEMPERATURE HIGH .................................................................................... 9 A2100300R UMP DISK FULL ........................................................................................................... 14 A2100301R UMP MEMORY FULL ................................................................................................... 17 A2100302R UMP OVERLOAD ......................................................................................................... 20 A2100305R UMP PACKET ERROR ................................................................................................... 23 A2100351R UMP CLOCK FAIL ......................................................................................................... 25 A2100370R UMP MEMORY FAIL .................................................................................................... 30 A2100380R UMP PORT DOWN ...................................................................................................... 33 A2100439R UMP ETHERNET HALF DUPLEX DETECTED .................................................................. 37 A2116100R ECP DSP RESTART ........................................................................................................ 40 A2116102R ECP PROCESS DOWN .................................................................................................. 43 A2116300R ECP DISK FULL ............................................................................................................. 46 A2116301R ECP MEMORY FULL ..................................................................................................... 49 A2116305R ECP PACKET ERROR ..................................................................................................... 52 A2116302R ECP OVERLOAD ........................................................................................................... 55 A2116351R ECP CLOCK FAIL ........................................................................................................... 58 A2116366R ECP BOARD DELETION ................................................................................................ 62 A2116367R ECP POWER FAIL ......................................................................................................... 66 A2116368R ECP FUNCTION FAIL .................................................................................................... 70 A2116372R ECP DSP FAIL ............................................................................................................... 76 A2116376R ECP CPRI FAIL .............................................................................................................. 79 A2116378R ECP OPTIC TRANSCEIVER RX LOS ................................................................................ 84 A2116379R ECP OPTIC TRANSCEIVER TX FAULT ............................................................................ 88 A2116381R ECP COMMUNICATION FAIL ....................................................................................... 92 A2116607R ECP SFN FAIL ............................................................................................................... 96 A2149216R RRH TEMPERATURE HIGH ......................................................................................... 100

Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

iii

Contents

A2149338R RET MOTOR JAM....................................................................................................... 104 A2149339R RET ACTUATOR JAM ................................................................................................. 108 A2149340R RET NOT CALIBRATED ............................................................................................... 112 A2149341R RET NOT CONFIGURED ............................................................................................. 116 A2149342R RET HW ERROR ......................................................................................................... 119 A2149343R RET ACTUATOR INTERFERENCE ................................................................................ 122 A2149351R RRH CLOCK FAIL ........................................................................................................ 125 A2149381R RRH COMMUNICATION FAIL..................................................................................... 129 A2149384R RRH DC INPUT FAIL ................................................................................................... 136 A2149385R RRH DISABLED ........................................................................................................... 140 A2149388R RRH LNA FAIL ............................................................................................................ 143 A2149389R RRH LOW GAIN ......................................................................................................... 146 A2149391R RRH OVER POWER .................................................................................................... 149 A2149392R RRH VSWR FAIL ......................................................................................................... 153 A2149408R RRH DIGITAL INPUT LOW .......................................................................................... 159 A2149630R ALD COMMUNICATION FAIL ..................................................................................... 164 A2149649R RRH HW TYPE MISMATCH ........................................................................................ 168 A2180001R GPSR TOD MSG MISSED ............................................................................................ 171 A2180350R GPSR ANTENNA FAIL ................................................................................................. 175 A2180360R GPSR HOLDOVER 24H ............................................................................................... 179 A2180361R GPSR LOCKING FAIL .................................................................................................. 183 A2180368R GPSR FUNCTION FAIL ................................................................................................ 187 A2180424R GPSR FREQUENCY HOLDOVER EXCEED..................................................................... 190 A2180624R GPSR CLOCK PHASE ABNORMAL............................................................................... 194 A2199202R SYS UDA .................................................................................................................... 198 A2199209R SYS FAN FAIL ............................................................................................................. 201 A2199365R SYS NTP UPDATE ERROR ........................................................................................... 205 A2199460R SYS SERVICE OFF ....................................................................................................... 208 A2199600R SYS MME COMMUNICATION FAIL ............................................................................ 211 A2199602R SYS SLEEPING CELL DETECTION ................................................................................ 214 A2199605R SYS IND MME COMMUNICATION FAIL ..................................................................... 217 A2199629R SYS MCE COMMUNICATION FAIL ............................................................................. 220 Chapter 3

Microcell Alarm Reference 223 A2100100R UMP DSP RESTART .................................................................................................... 223 A2100102R UMP PROCESS DOWN............................................................................................... 226 A2100217R UMP CPU TEMPERATURE HIGH ................................................................................ 229 A2100300R UMP DISK FULL ......................................................................................................... 232 A2100301R UMP MEMORY FULL ................................................................................................. 235 A2100302R UMP OVERLOAD ....................................................................................................... 238 A2100305R UMP PACKET ERROR ................................................................................................. 241 A2100351R UMP CLOCK FAIL ....................................................................................................... 243 A2100367R UMP POWER FAIL ..................................................................................................... 246 A2100370R UMP MEMORY FAIL .................................................................................................. 249 A2100372R UMP DSP FAIL ........................................................................................................... 252 A2100380R UMP PORT DOWN .................................................................................................... 255 A2100439R UMP ETHERNET HALF DUPLEX DETECTED ................................................................ 258 A2148389R RU LOW GAIN ........................................................................................................... 261 A2148391R RU OVER POWER ...................................................................................................... 264 A2148392R RU VSWR FAIL ........................................................................................................... 267 A2148408R RU DIGITAL INPUT LOW ............................................................................................ 271 A2148396R RU RX PATH FAIL ....................................................................................................... 274 A2180350R GPSR ANTENNA FAIL ................................................................................................. 277


iv

Contents

A2180360R GPSR TOD MSG MISSED ............................................................................................ 281 A2180361R GPSR LOCKING FAIL .................................................................................................. 284 A2180368R GPSR FUNCTION FAIL ................................................................................................ 288 A2180601R GPSR HOLDOVER 8H ................................................................................................. 291 A2180624R GPSR CLOCK PHASE ABNORMAL............................................................................... 295 A2184001R PTPM TOD MSG MISSED ........................................................................................... 298 A2184003R PTPM NO CURRENT PTP MASTER ............................................................................. 301 A2184320R PTPM NO PTP SIGNAL ............................................................................................... 305 A2184321R PTPM CLOCK DEV NOT INIT ...................................................................................... 309 A2184430R PTPM STARTUP LOCKING FAIL .................................................................................. 312 A2184438R PTPM HOLDOVER EXCEED ........................................................................................ 316 A2199216R SYS TEMPERATURE HIGH .......................................................................................... 320 A2199365R SYS NTP UPDATE ERROR ........................................................................................... 324 A2199460R SYS SERVICE OFF ....................................................................................................... 327 A2199600R SYS MME COMMUNICATION FAIL ............................................................................ 330 A2199602R SYS SLEEPING CELL DETECTION ................................................................................ 333 A2199605R SYS IND MME COMMUNICATION FAIL ..................................................................... 336 A2199629R SYS MCE COMMUNICATION FAIL ............................................................................. 339 Appendix

Acronyms


342

v

List of Tables Table 1. Table 2. Table 3. Table 4.

eNB Unit Types ................................................................................................................................. 2 Microcell Unit Types......................................................................................................................... 2 Alarm Categories .............................................................................................................................. 3 Alarm Severities ............................................................................................................................... 3


vi

Preface Provides a detailed reference and resolution guide for alarms that can be raised on the Samsung LTE eNB. This includes the DU and radio units. About this document

Relevance This manual applies to the following products/software. Name

Type

PKG 5.0.0

Software

Conventions in this Document Samsung Networks product documentation uses the following conventions.

Symbols Symbol

Description Indicates a task. Indicates a shortcut or an alternative method. Provides additional information. Provides information or instructions that you should follow to avoid service failure or damage to equipment. Provides information or instructions that you should follow to avoid personal injury or fatality. Provides antistatic precautions that you should observe.

Menu Commands menu | command This indicates that you must select a command on a menu, where menu is the name of the menu, and command is the name of the command on that menu.

File Names and Paths These are indicated by a bold typeface. For example: Copy filename.ext into the /home/folder1/folder2/bin/ folder. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

vii

Preface

User Input and Console Screen Output Text Input and output text is presented in the Courier font. For example, context CLI commands are presented in bold small caps. For example, Type the RTRV-NE-STS command in the input field.

Revision History The following table lists all versions of this document. Document Number

Product/Software Version

Document Version

Publication Date

Remarks

2600-00I33NGAB

PKG 5.0.0

1.0

31 Aug 2015

First version


viii

Preface

Personal and Product Safety This product safety information includes European directives, which you must follow. If these do not apply in your country, please follow similar directives that do apply in your country.

Electrical The product is designed to operate from a -48 V DC supply and is therefore classified as SELV (Safe Extra Low Voltage) equipment. All structural parts are grounded and all input and outputs have built-in isolation from the network. All input and output ports that connect to external power sources are designed to meet relevant national safety requirements. The product contains hazardous energy levels as defined by EN 60950. Care must be taken when maintaining this equipment as injury to personnel or damage to the equipment could result from mistakes. Maintenance should only be carried out by trained and competent engineers who are familiar with the relevant procedures and instructions.

Lasers The product is fitted with optic modules rated as Class 1 radiation-emitting devices under EN 60825-1. During installation, operation, and maintenance, never look into the end of an optical fiber directly or by reflection either with the naked eye or through an optical instrument. Do not operate equipment with exposed fiber connectors-cover these with fiber cables or blanking caps. Do not remove equipment covers during operation unless requested to do so in the documentation. Carry out normal safety precautions when trimming fibers during installation.

Manual Handling Care should be taken when handling equipment. Give due consideration to the weight of the equipment, the physical capability of the individual(s) handling the equipment, and movements such as twisting, bending and stooping, which could lead to skeletal and muscular injuries.

Installation Installation must be carried out by trained and competent engineers only. All relevant safety measures should be taken to ensure equipment is not connected to live power and transmission sources during installation. Equipment must be correctly installed in order to meet the relevant safety standards and approval conditions. Each power feed to the unit requires a separate fused feed from the provided power supply. The cable between the power distribution point and the installed equipment must have a minimum cross-sectional area of 2.5 mm2. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

ix

Preface

Rack-mountable equipment must be placed in a standard 19-inch rack and secured with the appropriate fixings as detailed in the installation manual.

Maintenance Maintenance must only be carried out by a suitably trained and competent technician. All safety instructions must be carefully observed at all times. Equipment covers should not be removed while live power and transmission is connected unless in a controlled environment by trained technicians.

Fire The product is powered from a -48 V DC supply. To protect against fire, the equipment is fused.

Environment The product must be operated in an environment with the specified relative humidity and ambient temperature ranges. Keep all liquids away from the equipment as accidental spillage can cause severe damage.

Cooling The product cools down by its own set of cooling fans housed in a fan module. Each fan module detects a fan that is not operating normally. LEDs on the front panel of the fan tray provide an alarm indication in the event of fan failure. In the event of fan failure, take urgent remedial action to restore full cooling capacity. Take appropriate measures to ensure that fan modules do not start spinning during repair and maintenance procedures.

Anti-Static Precautions The circuit boards and other modules in the product are sensitive to and easily damaged by static electricity. If any card or sub-assembly is removed from the unit, the following anti-static precautions must be observed at all times:



Service personnel must wear anti-static wrist straps.



Circuit boards and sub-assemblies must be placed on ground conductive mats or in conductive bags.



All tools must be discharged to ground before use.



The anti-static wrist strap and cord must be checked at regular intervals for their suitability for use.


x

Preface

Grounding To comply with EN 60950, the equipment must be connected to a safety grounding point via a permanent link. Grounding points are located on the product for this purpose. Always connect the ground cable before fitting other cables. The product must remain grounded continuously unless all connections to the power supply and data network are all removed. If equipment is grounded through a cabinet or rack, make sure it is done so properly according to the installation instructions.

Power Supply Connection The equipment is designed to be powered from a -48 V DC supply. Power connections and installation of associated wiring must be carried out by a suitably qualified technician. Only devices that comply with all relevant national safety requirements should be connected to the unit's power supply inlets. Other usage will invalidate any approval given to this equipment. Connection of this equipment to devices that are not marked with all relevant national safety requirements may produce hazardous conditions on the network. When the power supply is obtained by a rectifier/safety isolation transformer, the supply must meet the requirements of EN 60950 providing double/reinforced insulation between hazardous voltages and SELV/TNV circuits. Any battery must be separated from hazardous voltages by reinforced insulation.

Indirect Connection Before indirectly connecting any equipment to another device through a shared power supply, ALWAYS seek advice from a competent engineer. Devices that are not marked according to the relevant national safety standards may produce hazardous conditions on the network.

Product Disposal To reduce the environmental impact of products, Samsung has joined WEEE compliance activities. The WEEE symbol on the product indicates that the product is covered by the European Directive 2002/96/CE for the disposal of Waste Electrical and Electronic Equipment (WEEE). This means that the product should be disposed of separately from the municipal waste stream via designated collection facilities appointed by the government or the local authorities. This will help prevent potential negative consequences for the environment and human health. Please check the terms and conditions of the purchase contract for information about correct disposal.


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Preface

Battery Disposal The product contains a battery on the processor card. The battery should not be disposed of with other household waste. Where marked, the chemical symbols Hg, Cd or Pb indicate that the battery contains mercury, cadmium or lead above the reference levels in EC Directive 2006/66. The battery incorporated in this product is not user replaceable. For information on its replacement, please contact your service provider. Do not attempt to remove the battery or dispose it in a fire. Do not disassemble, crush, or puncture the battery. End of life recycling materials information is available from Samsung.

Chemical Warning This product contains chemicals known to the State of California to cause cancer and reproductive toxicity.


xii

Preface

Equipment Markings This marking on the product, accessories or literature indicates that the product and its electronic accessories (e.g. charger, headset, USB cable) should not be disposed of with other household waste at the end of their working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate these items from other types of waste and recycle them responsibly to promote the sustainable reuse of material resources. For more information on safe disposal and recycling, visit our website www.samsung.com/in or contact our Helpline numbers - 18002668282, 180030008282.

Correct disposal of batteries in this product (Applicable in countries with separate collection systems.) The marking on the battery, manual or packaging indicates that the battery in this product should not be disposed of with other household waste. Where marked, the chemical symbols Hg, Cd or Pb indicate that the battery contains mercury, cadmium or lead above the reference levels in EC Directive 2006/66. The battery incorporated in this product is not user replaceable. For information on its replacement, please contact your service provider. Do not attempt to remove the battery or dispose it in a fire. Do not disassemble, crush, or puncture the battery. If you intend to discard the product, the waste collection site will take the appropriate measures for the recycling and treatment of the product, including the battery.

This product is RoHS compliant.


xiii

Chapter 1

Introducing Alarms

Overview Alarms are events indicating problems or conditions that are worth highlighting. An alarm can be raised by hardware or by software processes. Hardware alarms are environmental alarms or alarms that are generated in a board. These alarms are collected by all the sub-boards and are reported to the main board. Software alarms are detected by other software blocks in each board and reported to the fault management module running in the master board. Alarms are graded into severities and require operator intervention. An alarm is raised if, for example, a process in the equipment has failed or if the temperature level around a hardware component has reached a defined threshold level. Alarms are vital to the troubleshooting and diagnosis of hardware and software problems. All Alarms are reported in the LSM graphical user interface and are retained in an alarm/fault history location for the following rolling periods: Type of Alarm/Fault

Retention Period

Raw data

7 days

Hourly

60 days

Daily

60 days

Monthly

6 months

There are two types of output message:



Alarm occurred



Alarm cleared

In the LSM event viewer, the following colors are used to indicate the alarms and their severity.



Critical: Red



Major: Orange



Minor: Yellow



Alarm Cleared: Green

Every alarm is uniquely identified by an alarm code and falls into a particular category with an assigned severity. Alarms are events indicating problems or conditions that are worth highlighting. An alarm can be raised by hardware or by software processes. An alarm is raised if, Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

1

Chapter 1 Introducing Alarms

for example, a process in the equipment has failed. Another alarm might be raised if the temperature level around a hardware component has reached a defined threshold level.

Alarm Codes An alarm is uniquely identified by an alarm code. The alarm code is an alphanumeric string that starts with the letter A, contains a unique 7-digit number and ends with the letter R. The letter A stands for Alarm, and the letter R identifies that the alarm is for the RAN (eNB).

A xxyyzzz R Abbreviation of RAN (eNB) Alarm number Abbreviation of Alarm



A: Abbreviation of Alarm



xxyyzzz (7-digit number): Allocated to each alarm uniquely. o

xx: NE type.

o

yy: Unit type. For unit type values, see Table 1 and Table 2.

o

zzz: Alarm type. For alarm type values, see Table 3.



R: Abbreviation of RAN (eNB)

Unit Types The following table shows types of units that can raise alarms: Table 1. eNB Unit Types Code

Unit Type

Description

00

UMP

Universal Main Processor

16

ECP

ENB Channel Processor

49

RRH

Remote Radio Head

80

GPSR

GPS Clock

99

SYS

eNB System

Table 2. Microcell Unit Types Code

Unit Type

Description


2

Chapter 1 Introducing Alarms Code

Unit Type

Description

00

UMP

Universal Main Processor

48

RU

Radio Unit

49

RRH

Remote Radio Head

80

UCR

Universal Clock Receiver

84

PTPM

IEEE1588 Clock Device

92

SyncE

SyncE Clock Device

99

SYS

Microcell System

Alarm Categories The category of the alarm denotes the component type that raised the alarm or the type of service affected by the alarm. Every alarm falls into one of the following categories and this is clearly stated under each alarm description in this manual. Table 3. Alarm Categories Category

Meaning

COMMUNICATIONS

A communication failure between equipment.

QOS

An adverse effect on device performance or quality of service.

PROCESSING

Software or processing failure.

EQUIPMENT

A device or equipment failure.

ENVIRONMENT

An environmental condition (such as excessive temperature or humidity) causing an adverse effect on equipment.

Alarm Severities The severity indicates the impact on the system and gives you an idea of how quickly the alarm should be dealt with. Every alarm that can be raised is assigned one of the following severities (from lowest to highest) and this is clearly stated under each alarm description in this manual. Table 4. Alarm Severities Severity

Meaning

MINOR

Indicates errors that do not have an immediate impact on the system but may do so if left unresolved.

MAJOR

Indicates errors pertaining to abnormalities in hardware or software operation such as circuit or subscriber service errors, immediate action is required although system operation is not seriously hindered.

CRITICAL

Indicates errors that seriously hinder normal system operation or greatly affect the system services. Immediate action is required.


3


Some alarms can take on different severity levels over a period of time. The occurrence of such an alarm clears any previously raised lower-severity occurrences of the alarm. To illustrate this, consider the alarm that is raised when disk usage reaches predefined thresholds defined by the operator such as Minor when 85 % full, Major when 90 % full, and Critical when 95 % full. A minor alarm will be raised when the disk is 85 % full. At 90 %, the severity will change to major and, at 95 %, it will change to critical.

Auto Alarm Suppression Some failures may raise several related alarms of different severities. A high severity alarm demanding immediate attention will automatically cause related lower severity alarms from being reported until it is cleared. This allows you to focus your troubleshooting efforts on more immediate issues before being told about the less important ones. For example, when a Communication Fail alarm is generated on a channel card or radio unit (RRH), other alarms that occur on these boards will not be reported. This is because the Communication Fail alarm is a higher severity alarm. The collection of the suppressed lower-severity alarms resumes after the Communication Fail alarm is cleared.

Inhibiting Alarms If, for any reason, you are not interested in being notified about particular alarms, you can inhibit them so that they are not displayed in LSM. Inhibited alarms are not saved to the alarm history location. To view the inhabit alarms in the LSM:

1 Go to Rack Viewer. 2 Right click on the NE, and then select Alarm Inhibit/Allow from the pop-up menu. The list of inhibited alarms displays for the corresponding NE. For information on inhibiting an alarm, refer to Samsung LSM 5.0 User Manual.

Monitoring Alarms You can monitor the alarm by the following methods:



Alarm monitoring using the LSM Event Viewer.



Alarm monitoring by executing commands on the CLI window of the LSM.



Alarm Monitoring by LED.


4


Dealing with an Alarm To ensure that your network is running properly at all times, you must deal with alarms promptly. To deal with an alarm:

1

Read the alarm information in the LSM and/or look up the alarm in this manual to identify its cause and remedy. If the alarm is related to another alarm of higher severity, then identify the cause of this higher severity alarm.

2 Use the information to try to resolve the underlying problem and thus clear the alarm. If you are still unable to clear an alarm, report the problem to your local Samsung Electronics support desk (hereafter referred to as Samsung).

Log Collection Method If any of the alarms remain active in LSM despite of taking all corrective actions, you must collect the system log to analyze them thoroughly. The notification and system logs are stored in the LSM and card. You can retrieve the logs for the date of alarm declared or cleared from their default paths:





For LSM: o

/log/msg/noti/

o

/log/system/syslog

For card: o

/var/log/

o

/pkg/BufferLogger/

For more detailed log collection method, contact Samsung.


5

Chapter 2

Alarm Reference

This chapter explains the common alarms that may issue during eNB operation. A description of the alarm, its possible cause, and resolving procedures are provided.

A2100102R UMP PROCESS DOWN This alarm occurs when a process is deactivated.

Basic Information Severity Relates to Category Location

MAJOR Software PROCESSING RACK[a]/SHELF[b]/SLOT[c]-UMP[d]/BLOCK_NAME

Possible Cause The process is deactivated. You can find the cause by analysing the core file and log file uploaded to the LSM.

Impact If an alarm is generated continuously in a specific software block, the service will be unavailable.

Remedy To analyze and resolve the alarm:


6

Chapter 2 Alarm Reference

Alarm Raised

Re-activate Alarm Raised Block

Step 1

Yes

Alarm Cleared After Repair? No

Backup the Faulty NE Block Image

Step 2

Replace Block Image

Yes


Collect SW Log and Restart Board

Step 3

Yes


Step 4

Collect SW Log and Restart NE

Step 5

Backup LSM Log

End

1

Activate the block that has raised the alarm:

a Re-activate the disabled block by running the INIT-SW:UMP, command.

b Check whether the PROCESS_DOWN alarm has been raised for the applicable block. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

7


2 If the alarm remains, replace the block image. Backup the block image for future analysis:

a

Backup the block image that continues to deactivate. Use the DNLD-SW and UDT-SW to replace the block image.

b Check whether the PROCESS_DOWN alarm has been raised for the applicable block.

3 If the problem cannot be solved by replacing a single block, restart the applicable board to repair it:

a

After collecting the SW log, use board restart commands such as INITPRC to carry out the repair.


4 If the problem cannot be solved by restarting the board, restart the NE to repair it:

a

After collecting the SW log, use NE restart commands such as INIT-SYS to carry out the repair.


5 To analyze the step by step process of clearing the PROCESS_DOWN alarm, backup the LSM log, by collecting the logs in /log/system/corelog & /log/system/applog for the relevant time frame.

6 If the alarm persists, consult the next level of maintenance support with Samsung.


8


A2100217R UMP CPU TEMPERATURE HIGH This alarm occurs when the CPU temperature exceeds the threshold.


CRITICAL/MAJOR Hardware ENVIRONMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]

Possible Cause The CPU temperature exceeded the threshold. The threshold value can be retrieved by using the RTRV-BDTEMPALM-THR COMMAND.

Impact The board will be damaged. To prevent heat-induced damage to the board, the eNB performs these functions:



If a critical severity alarm occurs without a FAN_FAIL alarm, it lowers the temperature by performing a power reset on the board.



When the critical severity alarm occurs together with the FAN_FAIL alarm, it lowers the temperature by powering off the board.

Defaults The default thresholds for issuing and clearing the alarm based on its severity are:



Critical alarms: Issuing 105℃ and clearing 100℃



Major alarms: Issuing 100℃ and clearing 95℃

Remedy Off-site Actions via LSM before Site Visit To analyze and resolve the alarm:


9


Alarm Raised

Step 1

Threshold < Default?

Yes

Run CHG-BDTEMPALM-THR command

No

Keep Alarm? Yes

No No Step 2

FW Update

FW Ver. NEW?

Step 3 Yes

Collect SW Logs

No

Yes

Step 4

UMP CPU TEMPERATURE HIGH Alarm Raised?

FAN Alarm Raised?

Yes

No Actions to Clear FAN Alarm

UMP CPU TEMPERATURE HIGH Alarm Raised? Yes Step 5

No

Check UMP Temperature Yes

Collect SW Log

Step 6

INIT-PRC(UMP)

Step 7


No

Yes

On Site Action

1

End

Check the threshold values for the CPU_TEMPERATURE_HIGH alarm by executing the TRV-BDTEMPALM-THR command. If the threshold values are set lower than the default values specified in the manual, do the following:

a

Enter the default threshold for each severity, and execute the CHG-


10


BDTEMPALM-THR command.

b If the CPU_TEMPERATURE_HIGH alarm clears within 30 seconds after you change the threshold values, terminate the procedure. If not, collect the SW log.

c

If the threshold values are set higher than the default values, collect the SW logs.

2 Check whether the UMP firmware is the latest version by running the RTRVPRC-FW command.

a

Set the PRC_UNIT_TYPE to UMP, and then run this command.

b Check the output on whether the NAME, VERSION, and BUILD_TIME of each firmware are the most recent one.

3 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is declared even when the firmware is up to date, collect the SW log.

4 Run the RTRV-ALM-LIST command to check whether a A2199209R SYS FAN alarm has been declared:

a

Check whether the output of ALARM_TYPE is FAN_FAIL. If it is, follow the corrective actions of the A2199209R SYS FAN FAIL alarm.

b If there is no FAN_FAIL alarm, continue with the next step. 5 Run the RTRV-PRC-STS command to check the CPU temperature: a

Set the UNIT_TYPE to UMP, and then run this command.

b Check whether the alarm generation conditions (when the threshold values retrieved using the RTRV-BDTEMPALM-THR command are exceeded) are met by checking the output parameter TEMPERATURE[C] value.

6 After collecting the SW log, run the INIT-PRC command to restart the UMP. 7 If the alarm remains, continue with the onsite actions. On-site Actions To analyze and resolve the alarm:


11


UMP CPU temperature high alarm occurs Entering the base station Step 1

Conduct visual inspection on FANM-C4 PWR/ALM LED

Indicate the location of FANMC4 LED with a drawing

LED color is green? Yes

Step 2

Conduct visual inspection on the air inlet/outlet of the CDU.

Check the existence of foreign substances

Indicate the air inlet/outlet of the shelf with a drawing

Eliminate foreign substances in the air inlet/outlet of the CDU shelf

Yes

No

Step 3

No

After dismounting the air filter, conduct visual inspection on it

Check the alarm clearance state Yes

Check the existence of foreign substances

After eliminating foreign substances, mount the air filter.

Yes

After recording the actions taken, leave the station

No

Step 4

After dismounting UAMA/ LMA3, conduct visual inspection on it

No

Check the alarm clearance state. Yes

After recording the actions taken, leave the station.

Check existence of foreign substances.

Yes

Eliminate foreign substances of UMP

Yes


No

Step 5

UAMA/LMA3 setting

Check alarm clearance state. No

Step 6

Replace UAMA/LMA3

Check the alarm clearance state.

No

Entering Step 7

After replacing FANM-C4, check if the alarm is cleared.

Yes


1

After entering the base station, check if the generated alarm of the base station in LSM is maintained by contacting the operating center. If the alarm is


12


generated, conduct visual inspection on FANM-C4 PWR/ALM LED state. If the alarm is cleared, execute sub-step (a) of Steps 2 and 3 to secure the normal operation of the base station. Items to be inspected: Record if FANM-C4 PWR/ALM LED is green or not. If the LED is green, execute Step 2. If the LED is red or off, execute Step 7.

2 Conduct visual inspection on the air inlet/outlet of the DU shelf. a

If any foreign substances preventing air flow found, eliminate them.

b If nothing significant to report is found or the alarm is not cleared even after the removal, execute Step 3.

c

If the alarm is cleared after eliminating foreign substances, continue to monitor the alarm state.

3 Check state of the air filter after dismounting it. a

If any foreign substances preventing air flow found, remount the air filter after eliminating them.

b If nothing significant to report is found or the alarm is not cleared even after the removal, execute Step 4.

c

If the alarm is cleared after eliminating foreign substances, continue to monitor the alarm state after recording history.

4 After dismounting UMP check if any foreign substances found in it. If foreign substances are found, eliminate them. If not found, continue with the Step 5.

5 After mounting UMP, check the alarm clearance state. If the alarm is not cleared, continue with the Step 6. If cleared, continue to monitor the alarm state after recording history.

6 After replacing the UMP, check the alarm clearance state. If the alarm is not cleared, continue with the Step 7. If cleared, continue to monitor the alarm state after recording history.

7 Replace the FANM-C4. After recording history, continue to monitor the alarm state. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


13


A2100300R UMP DISK FULL This alarm occurs when the disk usage exceeds the threshold.


CRITICAL/MAJOR/MINOR Software QOS RACK[a]/SHELF[b]/SLOT[c]-UMP[d]

Possible Cause The disk usage exceeded the threshold. The threshold value can be retrieved by using the RTRV-ALM-THR command.

Impact Some software blocks will operate abnormally.

Defaults The default thresholds for issuing the alarm based on its severity are:



Minor: 85 %



Major: 90 %



Critical: 95 %



14


Alarm Raised

Step 1

Run RTRV-ALM-THR


No

Yes

Run CHG-ALM-THR

Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

Step 3

Alarm Level = Minor

No

Yes

No Delete LOG Folder Files

Delete TEMP Folder Files

Alarm Still Raised?

No

Yes

Replace Board

1

End

Run the RTRV-ALM-THR command to check the threshold for the DISK_FULL alarm.


15


If the DISK_FULL threshold is lower than the default values, do the following:

a

Set the UNIT_TYPE to UMP and ALARM_TYPE to DISK_FULL for the CHG-ALM-THR. Enter the default value for each threshold level.

b If the DISK_FULL alarm is cleared within 10 seconds after changing the threshold value, terminate the procedure. If not, collect the SW log.

c

If the threshold is set higher than the default value, collect the SW log.

2 Check the following categories in which the DISK_FULL alarm can occur. a

DISK_FULL alarm can occur if more than one passive package exists as a result of an online upgrade. Use the RTRV-PKG-VER command to check the number of passive packages.

b After an online upgrade, run the DLT-PASV-PKG command to delete the passive packages.

c

Check whether the DISK_FULL alarm has been cleared.

3 If the alarm remains, do the following steps: a

If the DISK_FULL alarm level is CRITICAL or MAJOR, delete the files in LOG and TEMP folders of the UMP board.

b If the level is MINOR, then delete the files in TEMP folder of the UMP board. The locations of folders for the files to delete are: LOG: /var/log and TEMP: /tmp.

c


4 If the alarm remains, replace the faulty board. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


16


A2100301R UMP MEMORY FULL This alarm occurs when the memory usage exceeds the threshold.



Possible Cause The memory usage exceeded the threshold. The threshold value can be retrieved by using the RTRV-ALM-THR command.





Minor: 95 %



Major: 96 %



Critical: 97 %



17


Alarm Raised

Step 1

Run RTRV-ALM-THR

No

Threshold < Default? Yes

Run CHG-ALM-THR

Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

Step 3

Alarm Level = Minor

No

Yes



Alarm Still Raised?

No

Yes

Replace Board

1

End

Run the RTRV-ALM-THR command to check the threshold for the MEMORY_FULL alarm.


18


If the MEMORY_FULL threshold is lower than the default values, do the following steps.

a

Set UNIT_TYPE to UMP and ALARM_TYPE to MEMORY_FULL for the CHG-ALM-THR. Enter the default value for each threshold level.

b If the MEMORY_FULL alarm is cleared after changing the threshold, terminate the procedure. If not, collect the SW log.

c

[If the threshold is set higher than the default value, collect the SW log.

2 Check the following categories in which the MEMORY_FULL alarm can occur.

a

The MEMORY_FULL alarm can occur if more than one passive package exists as a result of an online upgrade. Use the RTRV-PKG-VER command to check the number of passive packages. i

After an online upgrade, run the DLT-PASV-PKG command to delete the passive packages.

ii

Check whether the MEMORY_FULL Alarm has been cleared.

b The MEMORY_FULL alarm can occur after the DNLD-FW-BAT command is executed and completed. i

Run the UDT-FW-BAT command to delete the firmware image.

ii

Check whether the MEMORY_FULL alarm is cleared after running the UDT-FW-BAT command.

3 If the alarm remains, Do the following steps: a

If the DISK_FULL alarm level is CRITICAL or MAJOR, delete the files in LOG and TEMP folders of the UMP board.

b If the level is MINOR, then delete the files in TEMP folder of the UMP board. The locations of folders with for the files to delete are: LOG: /var/log and TEMP: /tmp.

c

Check whether the MEMORY_FULL alarm has been cleared.

4 If the alarm remains, replace the faulty board. For information on board replacement, see LTE eNB Hardware Addition and Replacement Manual.


19


A2100302R UMP OVERLOAD This alarm occurs when the CPU usage exceeds the threshold.



Possible Cause The CPU usage exceeded the threshold. The threshold value can be retrieved by using RTRV-ALM-THR command.

Impact Some software blocks will operate abnormally. If this alarm is generated continuously, the UMP board will be reset.




Minor: 85 %



Major: 90 %



Critical: 95 %



20


Alarm Raised

Step 1

Check Threshold Value


No

Yes

Change Threshold Value

Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

No

Yes

Step 3

Alarm Level = Critical

No

Yes

SESSION CLOSE

Alarm Still Raised?

No

Yes

Step 4

1

Replace Board

End

Run the RTRV-ALM-THR command to check the threshold for the OVERLOAD alarm.


21


If the OVERLOAD threshold is lower than the default values, do the following steps:

a

Set the UNIT_TYPE to UMP and ALARM_TYPE to OVERLOAD for the CHG-ALM-THR. Enter the default value for each threshold level.

b If the OVERLOAD alarm is cleared after changing the threshold, terminate the procedure. If not, collect the SW log.

c


2 Check the following categories in which the OVERLOAD alarm can occur. a

The OVERLOAD alarm can occur if the data size is too large when executing the UPLD-CONF-FILE command. i

Wait until the UPLD-CONF-FILE command is completed. If the OVERLOAD alarm is cleared level by level, terminate the procedure.

b The OVERLOAD alarm can occur if commands, such as On-Demand Test, are repeated. i

Stop the commands that are being repeated.

ii

If the OVERLOAD alarm is cleared, terminate the procedure.

3 If the alarm is critical, close all the terminals (Telnet, FTP, and dsh) that are connected to the UMP. If it is cleared, terminate the procedure.

4 If the alarm remains, replace the faulty board. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


22


A2100305R UMP PACKET ERROR This alarm occurs when the error packets rate exceeds the threshold level.


MINOR Software EQIPMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]

Possible Cause The error packets rate exceeded the threshold level. The threshold can be retrieved by using RTRV-INVALIDPKT-CONF command.

Impact The service will be degraded due to the dropped packets.

Remedy The alarm can be resolved in the following two ways.

Off-site Actions via LSM before Site Visit To analyze and resolve the alarm:


23


Alarm Raised

Step 1

Is New F/W

No

UMP/ECP FW Update

Step 2

Yes

SW Log Collection

Step 3

Reset ECP and UMP

Step 4

Alarm Clear?

No

Yes

END

1

On Site Action

Check whether the firmware is the latest version.

2 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware.

3 Reboot the UMP board where the alarm occurred. And then, reboot the ECP boards one at a time.

4 Check whether the alarm has been cleared. If yes, wait for 10 minutes and recheck again. If not, collect the SW log and share with Samsung for the next level of maintenance support. The UMP and ECP collects all files under the /var/log folder, respectively.

On-site Actions To resolve the alarm: Replace the board. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


24


A2100351R UMP CLOCK FAIL This alarm occurs when the clock frequency deviation exceeds normal parameters.


MAJOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]

Possible Cause The clock module has a deviation or there is no clock.

Impact The clock service will be unavailable.




25


Alarm Raised

Step 1

UMP FW Ver. NEW?

No

UMP FW Update

Yes Yes

Collect SW Log

UMP CLOCK FAIL Alarm Raised? No

Step 2

Reset UMP

UMP CLOCK FAIL Alarm Raised?

No

Yes

Retrieve Alarm List

Step 3 No

GPSR Alarm Raised?

Step 4

Check GPS Status

Step 5

GPS FW Ver. NEW?

No

GPS FW Update

Yes

INIT-GPS

Step 6


No

Yes

Step 7

Collect SW Log

On Site Action

1

End

Check whether the UMP firmware is the latest version by running the RTRVPRC-FW command.


26


a

Set the PRC_UNIT_TYPE to UMP and LOC_TYPE to *, and then run this command.


c

If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware.

d Run the RTRV-ALM-LIST command to check whether the alarm persists. If yes, collect the SW log and continue with the next step.

2 Run the INIT-PRC command to restart the UMP. a

Set the PRC_UNIT_TYPE to UMP and RESET_MODE to HW, and then run this command.

b If the alarm remains, continue with the next step. 3 Run the RTRV-ALM-LIST to check whether a GPS related alarm has been declared. If GPS related alarms exist, follow their respective remedies.

4 Run the RTRV-GPS-STS command to check the GPSR status. Check whether the output of LOCK_STATE and HOLDOVER_STATE are GPS_LOCKED and GPS_NOT_HOLDOVER.

5 Run the RTRV-GPS-INVT command to check whether the GPS firmware is the latest version. Check whether the FW_VERSION on the output window displays the latest version.

6 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is declared even when the firmware is up to date, continue with the next step.

7 Run the INIT-GPS command to restart the GPSR. After the command has been run, check whether a UMP CLOCK_FAIL alarm has been declared. If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.

On-site Actions To analyze and resolve the alarm:


27


UMP clock fail alarm occurs Entering the base station

Step 1

Indicate the location of UAMA GPS LED with a drawing. Check UMP Clock LED

RED solid ?

Step 2

Yes

Execute the GPS inspection procedure

Remount UAMA/LMA3 after dismounting it. Step 3 Check the alarm disassembly state.

No

Replace UAMA/LMA3

Yes


1

After entering the base station, check if the generated alarm of the base station is maintained and conduct visual inspection on the UMP GPS LED state. o

Green Blinking: Normal

o

Red: Alarms (CLOCK_DEV_NOT_INIT, STARTUP LOCKING FAIL FREQUENCE_HOLDOVER_EXCEED, HOLDOVER_24H, TOD_MSG_MISSED)

o

Orange: Frequency holdover start status

Items to be inspected

a

Record the checked GPS LED state.

b After checking the UMP LED state, go to Step 2 if not in the LED solid state.

c

If it is in RED solid, follow the GPS inspection procedure described in the Hardware Addition and Replacement or MBS(eNB) Installation Manual.

2 Remount UMP after dismounting. If the alarm is not cleared, continue with the Step 4. If it is cleared, record history and continue to monitor the alarm state.

3 Replace the UMP. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual. If the alarm is cleared after replacing the UMP, record the current status and Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

28


observe any reoccurrence. Record the fault details and affix them to the faulty UMP. If the alarm remains, consult with Samsung for next level of maintenance support.


29


A2100370R UMP MEMORY FAIL This alarm occurs when there are operation errors (data read/write) in the memory device.



Possible Cause Operation errors (data read/write) in the memory device.





30


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Step 2

Yes

Yes

Collect SW Log

UMP MEMORY FAIL Alarm Raised? No

INIT-PRC (UMP, RESET MODE=HW)

Step 3

UMP MEMORY FAIL Alarm Raised?

No

Yes

On Site Action

Step 4

1

End


a




3 Run the INIT-SYS command to restart the system. a

Set the RESET_MODE to HW, and then run this command.

b Check whether a UMP MEMORY_FAIL alarm has been declared. 4 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.



31


Enter the station

Dismount/mount UMP

Alarm Clear? Yes

No

1) Dismount the board. 2) Disassemble/assemble the DDR module. (Check if there is a foreign material in the socket.) 3) Mount the board.

No Alarm Clear? Yes

Clear the situation and monitoring after logging history

1

Mount DDR module Conclude that there is poor End condition or foreign material

Replace the board and leave the station

Unmount the UMP. Disassemble and reassemble the DDR memory module. Check if there is any foreign material in the memory connector (socket).

2 Mount the UMP and check if an alarm is generated after loading completes. 3 If the alarm is cleared, record the current status and observe any reoccurrence. 4 If the alarm remains, replace the UMP. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


32


A2100380R UMP PORT DOWN This alarm occurs when the backhaul port is down.


MAJOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]/PORT[e]

Possible Cause A link is down (for example, due to a bad port connection) of the backhaul port.

Impact The board will not be able to communicate with the LSM or external devices.




33


Alarm Raised

UMP FW Ver. NEW?

Step 1

No

UMP FW Update Reset UMP

Step 2

Yes

No

Check ELINK Status

Step 3

Port Locked?

UMP PORT_DOWN Clear?

Yes

Yes Unlock Port

No Step 4 UMP PORT_DOWN Clear?

On Site Action

1

End


a


b Check the output on whether the VERSION of each firmware is the most recent one.

2 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. After the update, run the INIT-PRC command with the input PRC_UNIT_TYPE set to UMP to restart the UMP board.

3 Run the RTRV-ELINK-STS command to check whether ADMINISTRATIVE_STATE is set to linkUnlocked.

4 If ADMINISTRATIVE_STATE is currently set to linkLocked, use the CHGELINK-CONF command to change STATUS to EQUIP and ADMINISTRATIVE_STATE to linkUnlocked. Check whether the alarm has been cleared after this.

5 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.

On-site Actions To analyze and resolve the alarm: Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

34


Enter the station

Check the link status using the LED of the port (Green LED)

Step 1

Step 9 After checking cable connection or optical module status, remount, re-assemble, or replace the module.

Check the status of an equipment connected to the port

Step 7

1) Dismount the board. 2) Disassemble/assemble the DDR module. (Check if there is a foreign material in the socket.) 3) Mount the board.

Step 10 No

Alarm Clear?

Reset or replace the module.

Step 8

Yes

Alarm Clear?

Yes

No

Conclude that there is poor cable connection, poor item, or poor optical module

Alarm Clear?

Step 11

No

Record the defects in detail to the RMA TAG

Yes

Clear the situation and monitoring after logging history

1

Conclude that there is poor equipment connection and poor equipment

Conclude that there is poor installation of DDR module and foreign material


Check the LED status of the port.

Status

Description Orange blinking (Left)

Ethernet Packet Tx Activity

Green on (Right)

Link Up Status (Rx Activity)

Off

Cable Open

Copper Port

Green LED

Status

Description Green On (Left)

Link Up (physical link ready)

Off

Power off, link off, or critical fault (Right LED is always off.)

Orange LED

Optical Port Green OFF

2 Check that the Ethernet cable is correctly connected and that there is no external damage.

3 Check that the optical cable is correctly connected and that there is no external damage or bending.

4 Check that the connected optical cables (Single or Multi-Mode) are suitable for the installed optical module type (Single or Multi-Mode). Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

35


5 Check that the optical module is supported by the system. 6 Clean the optical module and measure its optical power. Check the measured optical power against the product specifications in the LTE eNB Installation Manual. Replace the optical module if necessary.

7 Check the status of the equipment connected to the backhaul port (for example, router and switch).

8 If the equipment connected to the backhaul port is not working properly, reset or replace the equipment.

9 Unmount the UMP. Disassemble and reassemble the DDR memory module. Check if there is any foreign material in the memory connector (socket). Mount the UMP and check if an alarm is generated after loading completes.

10 If the alarm is cleared, record the current status and observe any reoccurrence. 11 If the alarm is not cleared, record the failure details to the RMA TAG and replace the UMP. Record the details including port connection configuration status, the part number of mounted optical module, the optical cable type, and so on. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


36


A2100439R UMP ETHERNET HALF DUPLEX DETECTED This alarm occurs when the backhaul port status is up and duplex mode is half duplex.


MINOR Software EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]/PORT[e]

Possible Cause The backhaul port status is up and duplex mode is half duplex.

Impact The call service will be degraded due to the high risk of packet loss.




37


Alarm Raised

Step 1

retrieve autonego, speed, duplex Config of both eNB BH and oppsite Device

Step 2

Config mismatch?

No

Yes

Step 3

Make configure match and Down and up BH link

Step 4

Clear Alarm ?

INIT-SYS

No

Yes

END

1

On Site Action

Check the Autonego, Speed, and Duplex settings of both the eNB and the remote station equipment.

a

Run the RTRV-ELINK-CONF command.

b Run the RTRV-ELINK-CONF command. The commands used on the remote stations equipment may differ depending on the manufacturer, and the following are the commands relevant to each major equipment manufacturer: - Cisco: show running-conifig {interface name} - NETGEAR: show port { | all } - 3Com: display interface [interface_type | interface_type interface_number]

2 Check whether the Autonego, Speed, and Duplex are all set to the same value. 3 If the Autonego, Speed, and Duplex settings are different from each other, set them to the same value. If the alarm remains despite the above parameters being set to the same value, reboot the eNB and check again if the alarm occurs. Run the INIT-SYS command.



38



1

Check link aggregation status by disconnecting and then connecting the cable again. If the alarm does not clear, continue with the next step.

2 Replace the cable. 3 If the alarm remains, replace the board. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


39


A2116100R ECP DSP RESTART This alarm occurs when the DSP resets and restarts.


CRITICAL Software PROCESSING RACK[a]/SHELF[b]/SLOT[c]-ECP[d]/DSP[e]

Possible Cause The DSP resets and restarts (by using the DSP Reset command or replacing the DSP image).

Impact Cell services related to the ECP will be unavailable during restart.



40


Alarm Raised

Step 1

FW Ver. NEW?

No

FW Update

Step 2

Yes

Yes

Collect SW Log

ECP DSP RESTART Alarm Raised? No

Step 3

INIT-DSP (ECP)

Step 4

ECP DSP RESTART Alarm Raised?

No

Yes

Step 5

INIT-SYS

ECP DSP RESTART Alarm Raised?

No

Yes

Replace Board

1

End

Check whether the ECP firmware is the latest version by running the RTRVPRC-FW command.

a

Set the PRC_UNIT_TYPE to ECP and LOC_TYPE to *, and then run this command.



a

After the firmware has been updated, check whether the alarm is raised. If yes, continue with the next step.

b Run the RTRV-ALM-LIST command. Check whether the ECP DSP_RESTART alarm has been declared.

3 Run the INIT-DSP command to restart the DSP. a

Set the BD_ID ECP ID and DSP_ID to DSP ID, and then run this


41


command.

b Check whether the ECP DSP_RESTART alarm has been declared. 4 Run the INIT-SYS command to restart the system. a


b Check whether the ECP DSP_RESTART alarm has been declared. 5 If the alarm remains, collect the SW log and replace the faulty board.


42


A2116102R ECP PROCESS DOWN This alarm occurs when the ECP process is deactivated.


MAJOR Software PROCESSING RACK[a]/SHELF[b]/SLOT[c]-ECP[d]/BLOCK_NAME

Possible Cause The ECP process is deactivated. You can find the cause by analysing the core file and log file uploaded to the LSM.

Impact If the alarm generates continuously in a specific software block, the service will be unavailable.



43


Alarm Raised


Step 1

Yes



Step 2

Replace Block Image

Yes


Collect SW Log and Restart Board

Step 3

Yes


Step 4


Step 5

Backup LSM Log

End

1

Activate the block that has raised the alarm.

a

Re-activate the disabled block by running the INIT-SW:ECP, command.


44


2 If the alarm remains, replace the block image. Backup the block image for future analysis.

a

Backup the block image that continues to deactivate. Use the DNLD-SW, UDT-SW commands to replace the block image.


3 If the problem cannot be solved by replacing a single block, restart the applicable board to repair it.

a

After collecting the SW log, use board restart commands such as INITPRC to carry out the repair.


4 If the problem cannot be solved by restarting the board, reset the NE to repair it.

a



5 To analyse the step by step process of clearing the PROCESS_ DOWN alarm, backup the LSM log. If the alarm remains, consult with Samsung for the next level of maintenance support. The logs are collected in the /log/system/corelog and /log/system/applog paths for the relevant time.


45


A2116300R ECP DISK FULL This alarm occurs when the network processor is either not sending or receiving packets.


CRITICAL/MAJOR/MINOR Software QOS RACK[a]/SHELF[b]/SLOT[c]-ECP[d]

Possible Cause The disk usage exceeded the threshold. The threshold can be retrieved by using the RTRV-ALM-THR command.





Minor: 85 %



Major: 90 %



Critical: 95 %



46


Alarm Raised

Step 1

Run RTRV-ALM-THR

No

Threshold < Default? Yes

Run CHG-ALM-THR

Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

Step 3

Alarm Level = Minor

No

Yes



Alarm Still Raised?

No

Yes

Replace Board

1

End



47


If the DISK_FULL threshold is lower than the default value, do the following steps:

a

Set the UNIT_TYPE to ECP and ALARM_TYPE to DISK_FULL for the CHG-ALM-THR. Enter the default value for each threshold level.


c

If the threshold is set higher than the default value, collect the SW Log.

2 Check the following categories in which the DISK_FULL Alarm can occur. a

The DISK_FULL alarm can occur if more than one passive package exists as a result of an online upgrade. Use the RTRV-PKG-VER command to check the number of passive packages.

b After an online upgrade, run the DLT-PASV-PKG command to delete the passive packages.

c



If the DISK_FULL alarm level is CRITICAL or MAJOR, delete the files in LOG and TEMP folders of the ECP board.

b If the level is MINOR, then delete the files in TEMP folder of the ECP board. The locations of folders for the files to delete are: LOG: /var/log and TEMP: /tmp.

c




48


A2116301R ECP MEMORY FULL This alarm occurs when the memory usage exceeds the threshold.



Possible Cause The memory usage exceeded the threshold. The threshold can be retrieved using the RTRV-ALM-THR command.





Minor: 95 %



Major: 96 %



Critical: 97 %



49


Alarm Raised

Step 1

Run RTRV-ALM-THR


No

Yes

Run CHG-ALM-THR

Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

Step 3

Alarm Level = Minor

No

Yes



Alarm Still Raised?

No

Yes

Replace Board

1

End



50


If the MEMORY_FULL threshold is lower than the default value, do the following steps:

a

Set the UNIT_TYPE to EPC and ALARM_TYPE to MEMORY_FULL for the CHG-ALM-THR. Enter the default value for each threshold level.

b If the MEMORY_FULL alarm is cleared after changing the threshold value, terminate the procedure. If not, collect the SW log.

c


2 Check the following categories in which the MEMORY_FULL alarm can occur.

a



ii



Run the UDT-FW-BAT command to delete the firmware image.

ii

Check whether the MEMORY_FULL Alarm is cleared after running the UDT-FW-BAT command.


If the DISK_FULL alarm level is CRITICAL or MAJOR, delete the files in LOG and TEMP folders of the ECP board.

b If the level is MINOR, then delete the files in TEMP folder of the ECP board. The locations of folders for the files to delete are: LOG: /var/log and TEMP: /tmp.

c

Check whether the MEMORY_FULL alarm has been cleared.



51


A2116305R ECP PACKET ERROR This alarm occurs when the error packets rate exceeds the threshold level.


MINOR Software EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-ECP[d]

Possible Cause The error packets rate exceeded the threshold level. The threshold value can be retrieved by using RTRV-INVALIDPKT-CONF command.





52


Alarm Raised

Step 1

Is New F/W

No

Step 2

UMP/ECP FW Update

Yes

SW Log Collection

Step 3

Reset ECP and UMP

Step 4

Alarm Clear?

No

Yes

END

1

On Site Action

Check whether the firmware is the latest version.

2 If not, update the firmware to the latest version. a

Check whether the UMP firmware is the latest version by running the RTRV-PRC-FW command.  Set the PRC_UNIT_TYPE to UMP, and then run this command.  Check the output on whether the NAME, VERSION, and BUILD_TIME of each firmware are the most recent one.

b If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is declared even when the firmware is up to date, collect the SW log.

3 Reboot the ECP board where the alarm occurred. After the reboot of the ECP board completes, reboot the UMP board.

4 Check whether the alarm has been cleared. If yes, wait for 10 minutes and recheck again. If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support. The UMP and ECP collects all files under the /var/log folder, respectively.

On-site Actions To resolve the alarm: Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

53


Replace the board. For information on board replacement, see LTE eNB Hardware Addition and Replacement Manual.


54


A2116302R ECP OVERLOAD This alarm occurs when the CPU usage exceeds the threshold.



Possible Cause The CPU usage exceeded the threshold. The threshold value can be retrieved by using the RTRV-ALM-THR command.

Impact Some software blocks will operate abnormally. If the alarm is generated continuously, the ECP board will be reset.




Minor: 85 %



Major: 90 %



Critical: 95 %



55


Alarm Raised


Step 1

Threshold < Default ?

No

Yes


Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

No

Yes


Step 3

No

Yes

SESSION CLOSE

Alarm Still Raised?

No

Yes

Replace Board

Step 4

1

End

Run the RTRV-ALM-THR command to check the threshold for the OVERLOAD alarm. If the OVERLOAD threshold is lower than the default value, do the following steps:

a

Set the UNIT_TYPE to ECP and ALARM_TYPE to OVERLOAD for the


56


CHG-ALM-THR. Enter the default value for each threshold level.

b If the OVERLOAD alarm is cleared after changing the threshold value, terminate the procedure. If not, collect the SW log.

c



The OVERLOAD alarm can occur if the data size is too large when executing the UPLD-CONF-FILE command. i

Wait until the UPLD-CONF-FILE command is completed. If the alarm is cleared level by level, terminate the procedure.



ii

If the alarm is cleared level by level after changing the threshold value, terminate the procedure.

3 If the alarm is critical, close all the terminals (Telnet, FTP, and dsh) that are connected to the ECP. If it is cleared, terminate the procedure.



57


A2116351R ECP CLOCK FAIL This alarm occurs when the clock frequency deviation exceeds normal parameters.


MAJOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-ECP[d]

Possible Cause Any of the following clocks is out of the required frequency range, as monitored on the EPLD clock monitoring block:



30.72 MHz



10 ms



BFN



Even clock

Impact The service will be unavailable due to the CPRI failure (RRU interface).




58


Alarm Raised

UMP/ECP FW Ver. NEW?

Step 1

No

UMP/ECP FW Update

Step 2

Yes

Yes

Collect SW Log

ECP CLOCK FAIL Alarm Raised? No

Step 3

Reset ECP or UMP

Step 4

ECP CLOCK FAIL Alarm Raised?

No

Yes

On Site Action

1

End

Run the RTRV-PRC-FW command to check whether the UMP and ECP firmware is the latest version.

a


b Set the PRC_UNIT_TYPE to ECP and LOC_TYPE to *, and then run the command.

c

Check the output on whether the NAME, VERSION, and BUILD_TIME of each firmware are the most recent one.


a

After the firmware has been updated, check whether the alarm is raised:

b Run the RTRV-ALM-LIST command. c

Check whether the ECP CLOCK_FAIL alarm has been declared.

3 Run the INIT-PRC command to restart either the ECP or UMP. a

When the alarm is raised only for a certain ECP: Run the INIT-PRC command to restart only the ECP with the alarm raised. Set the PRC_UNIT_TYPE, PRC_INIT_ID, and RESET_MODE to ECP, ECP Number, and HW, and then run this command.

b When the alarm is raised for all ECPs: Run the INIT-PRC command to restart the UMP. Set PRC_UNIT_TYPE Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

59


to UMP and RESET_MODE to HW, and then run this command.

c

If the alarm remains even after the UMP restart, run the INIT-PRC command to restart each of the ECPs that have declared the alarm. Set the PRC_UNIT_TYPE, PRC_INIT_ID, and RESET_MODE to ECP, ECP Number, and HW, and then run the command.



Alarm generated

Enter the base station

Step 1

After dismounting ECP, execute visual inspection on ECP and backboard edge pins.

Broken/damaged?

Step 3 Remount ECP

No

Alarm Clear?

Yes

Step 2

Yes

No

When ECP damaged or broken: replace ECP Backboard damaged: Replace UADU

Step 4

After replacing ECP, leave the base station. Describe the defects in detail on the defective ECP.

After recording history, clear the alarm situation and start monitoring.

1

Check if the generated alarm of the base station is maintained in LSM after entering the base station and conduct visual inspection on the DU shelf state. Items to be inspected o

Record if anything significant to report is found after inspecting the front side of the DU shelf.

o

After dismounting the ECP, record if anything significant to report is found such as damages, water mark etc. within the board.

o

Record if any damages are found on the ECP pin after inspection.

o

Record if any damages are found on the DU shelf backboard pin after inspection.


60


 If the ECP or the backboard of DU shelf found damaged, execute Step 2.  If no defects found in the ECP or in the backboard of the DU shelf, execute Step 3.

2 Replace the broken or damaged part. a

If the ECP found damaged or broken, replace the defective ECP.

b If the backboard of the DU shelf damaged, replace the defective DU shelf. c

After recording the updated history, continue to monitor the alarm state.

3 If nothing significant to report found in the DU shelf or the ECP after visual inspection, remount the ECP.

a

If the alarm is cleared after remounting the ECP, continue to monitor the alarm state after recording history.

b If the alarm is maintained after remounting, continue with the Step 4. 4 Replace the ECP. For information on ECP replacement, see LTE eNB Hardware Addition and Replacement Manual. If the alarm is cleared, record the current status and observe any reoccurrence. Record the fault details and affix them to the faulty ECP. If the alarm remains, consult with Samsung for the next level of maintenance support.


61


A2116366R ECP BOARD DELETION This alarm occurs when a board is unmounted.


CRITICAL Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-ECP[d]

Possible Cause The board is unmounted.

Impact Cell services related to the ECP will be unavailable.




62


Alarm Raised

No

Step 1

UMP-ECP Communication Possible? Yes

FW Ver. NEW?

Step 2

No

FW Update

Step 3

Yes

Yes

Collect SW Log

Step 4

ECP BOARD DELETION Alarm Raised? No

ECP Restart

ECP BOARD DELETION Alarm Raised?

Step 5

No

Yes

System Restart

ECP BOARD DELETION Alarm Raised?

Step 6

No

Yes

On Site Action

1

End

Run the RTRV-PRC-INVT command to check whether communication between the UMP and ECP is normal.

a

Set the PRC_UNIT_TYPE to ECP and PRC_ID to ECP ID, and then run this command.

b Check whether the output is No Data. If it is, perform the onsite actions, as communication between the UMP and ECP is not possible.

2 If the Step 1 result is not No Data, run the RTRV-PRC-FW command to check whether the ECP firmware is the latest version.

a

Set the PRC_UNIT_TYPE to ECP, and then run this command.

b Check the output on whether the NAME, VERSION, and BUILD_TIME of each firmware are the most recent one. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

63



4 If the alarm is raised even when the firmware is the latest version, collect the SW log and then restart the ECP by running the INIT-PRC command with the ECP ID that has raised the alarm.

5 If the alarm is not cleared even after restarting the ECP, run the INIT-SYS command to restart the system.



Alarm Occurs

Step 2

Step 4

Site Visit

Conduct Visual Inspection on ECP, Backboard, and Edge Pin after ECP Remounting

Remove and Remount ECP

Damage/Defect ?

Step 6 Conduct Visual Inspection on UMP, Backboard, and Edge Pin after UMP Remounting

No

Damage/Defect ?

Yes Step 3 No

Alarm Clear?

Upon ECP Damage/Defect: Replace ECP Upon Backboard Damage: Replace UADU

Replace ECP

No

Yes

Alarm Clear?

Yes

No

Step 5

Step 7

Upon UMP Damage/Defect: Replace UMP Upon Backboard Damage: Replace UADU

Remount the board before ECP Replacement, Replace UMP

Yes

Yes

Alarm Clear? No Step 8

Clear Situation and Monitor after Recording History

1

Replace the Entire UADU

At the site, check if the base station alarm remains activated in LSM. If the alarm remains, remove and remount the ECP. If the alarm is not cleared, continue with the Step 2. If cleared, record history and continue to monitor the alarm state.

2 After removal and remounting of the ECP, check if there are any damages, water stains, and other remarks inside the ECP and record the details. Check if the DU shelf backboard pin against the ECP is damaged and record damage Y/N. (If the environment is dark, use a lamp or torch light for Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

64


thorough visual check.) o

If there are any damages found on the backboard of the DU shelf or ECP, continue with the Step 3.

o

If there are no errors found on the backboard of the DU shelf or ECP, continue with the Step 4.

3 When the ECP or the backboard of the DU shelf is damaged or defective, replace it. Record history and continue to monitor the alarm state.

4 After removing the UMP, check if there are any damages, water stain, or other remarks inside it. Check if the DU shelf backboard pin against the UMP is damaged and record the results. (If the environment is dark, use a lamp or torch light for thorough visual check.) o

If there are any damages found on the backboard of the DU shelf or UMP, continue with the Step 5.

o

If there are no errors found on the backboard of the DU shelf or UMP, continue with the Step 6.

5 When the UMP or the backboard of the DU shelf is damaged or defective, replace it. Record action history and continue to monitor the alarm state.

6 Replace the ECP. o

If the alarm is not cleared, continue with the Step 7.

o

If the alarm is cleared, record history log and continue to monitor the alarm state.

7 Since the error has not been caused by ECP, re-mount the ECP before replacement, and then replace the UMP. Replace the UMP. o


o

If it is cleared, record action history and continue to monitor the alarm state.

8 Replace the entire UADU. After recording action history, continue to monitor the alarm state. For information on replacement of ECP and other parts, see LTE eNB Hardware Addition and Replacement Manual.

If the highest-level alarm BOARD DELETION is generated, the previous alarms that preceded it are all cleared. Alarms generated on the board are filtered and will not be reported while the BOARD DELETION alarm remains active.


65


A2116367R ECP POWER FAIL This alarm occurs when there is a problem with the power supply.



Possible Cause All of the voltage values monitored on the board have a deviation of more than ±10 %. There are nine voltage values ranging from 0.9 V through 3.3 V that are being monitored on the board.





66


Alarm Raised

No

Step 1


FW Ver. NEW?

Step 2

No

FW Update

Step 3

Yes

Yes

Collect SW Log

Step 4

ECP POWER FAIL Alarm Raised? No

ECP Restart

ECP POWER FAIL Alarm Raised?

Step 5

No

Yes

System Restart

ECP POWER FAIL Alarm Raised?

Step 6

No

Yes

On Site Action

1

End


a

Set the PRC_UNIT_TYPE to ECP and PRC_ID ECP ID, and then run this command.

b Check whether the output is No Data. If it is, perform the on-site actions of, as communication between the UMP and ECP is not possible.

2 If the Step 1 result is not No Data, run the RTRV-PRC-FW command to check whether the ECP firmware is the latest version.

a



67




5 If the alarm remains even after restarting the ECP, run the INIT-SYS command to restart the system.



Alarm Occurs

Alarm Clear?

Site Visit

Yes

No Step 2

Step 1

Remove ECP, Conduct Visual Check, and Remount

LED On Y/N Off

Remove and Remount ECP

On

Alarm Clear? No Step 3 Replace ECP

1

Yes


At the site, check if the alarm remains activated in LSM. If the alarm is on, remove the ECP. After ECP removal, check if there are any damages, water stain, or other remarks inside the board. Record the details and remount it. o

If the LED is not on, replace the ECP. After recording action history, continuously monitor the alarm state.

o

If the LED is on, however, the alarm is not cleared, continue with the Step 2.

o

If the LED is on and the alarm is cleared, record action history and continue to monitor the alarm state.

2 Remove and remount the ECP. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

68


o

If the alarm is cleared, record action history and continue to monitor the alarm state.

o


3 Replace the ECP. For information on ECP replacement, refer the LTE eNB Hardware Addition and Replacement Manual. If the alarm is cleared, record the current status and observe any reoccurrence. Record the fault details and affix them to the faulty ECP. If the alarm remains, consult the next level of maintenance with Samsung.


69


A2116368R ECP FUNCTION FAIL This alarm occurs when a specific function fails in the software.



Possible Cause If a specific function fails in the software, the Hardware Function Fail alarm signal occurs when the CPU writes it into the Function Fail Register of the PLD. In addition, the Function Fail alarm signal occurs when a push button reset, a watchdog reset, or a self-reset occurs.





70


Alarm Raised

No

Step 1


FW Ver. NEW?

Step 2

No

FW Update

Step 3

Yes

Yes

Collect SW Log

Step 4

ECP FUNCTION FAIL Alarm Raised? No

ECP Restart

ECP FUNCTION FAIL Alarm Raised?

Step 5

No

Yes

System Restart

ECP FUNCTION FAIL Alarm Raised?

Step 6

No

Yes

On Site Action

1

End


a

Set the PRC_UNIT_TYPE to ECP and PRC_ID ECP ID, and then run this command.

b Check whether the output is No Data. If it is, perform the on-site actions of, as communication between the UMP and ECP is not possible.

2 If the Step 1 result is not No Data, run the RTRV-PRC-FW command to check whether the ECP firmware is the latest version

a



71




5 If the alarm remains even after restarting the ECP, run the INIT-SYS command to restart the system.



72



Alarm Occurs

Step 2

Step 1

Site Visit (Check the Newest F/W before Site Visit)

Use RS-232 Debug Cable to Connect ECP to Laptop and Obtain F/W Info, Remount ECP

Remove ECP, Conduct Visual Check, and Remount

Alarm Cleared after 5 Minutes Y/N

Yes

No Step 3 Alarm Cleared after 5 Minutes Y/N

No

Replace ECP

Yes


1

If the ECP F/W is not found before the site visit, carry along a laptop and UART debug cable. After ECP removal, check for any damages, water stains, other remarks inside the board. Record details and re-mount it. o

If the alarm is not cleared after 5 minutes, continue with the Step 2.

o

If the alarm is cleared after 5 minutes, record action history and continue to monitor the alarm state.

2 Use a UART debug cable to connect the ECP DEGO port to the laptop and run Tetraterm program. [Teraterm Configurations] -

Baudrate: 115200, Data: 8bit, Parity: none Stop: 1bit Flow control: none

Mount the laptop ECP. When the Booter Message appears on Teraterm, press Ctrl+C twice. After approximately 30 seconds, it will stop at Booter Prompt. Then, use the command gettail 0and the F/W information will be obtained. (To be used in the following analysis)


73


9 pin D-sub type

USB Type

[Connecting to a Laptop Using a UART Debug Cable] Re-mount the ECP. Without a laptop, skip the previous procedures for obtaining the firmware log. o

If the alarm is not cleared after 5 minutes, continue with the Step 3.

o


3 Replace the ECP. For information on ECP replacement, see LTE eNB Hardware Addition and Replacement Manual. If the alarm is cleared after replacing the ECP, record the current status and observe any reoccurrence. Record the fault details and affix them to the faulty ECP. If the alarm remains, consult the next level of maintenance with Samsung. To check the Fail Safe Boot Mode switch: Check the on/off status of the S1 switch on the board. The S1 switch location is shown in the figure below.


74


If the switch is OFF, change it to the ON. The default position of the S1 switch is ON. However, if the switch is OFF, the board cannot be loaded. Make sure the switch is set to ON before mounting the board.


75


A2116372R ECP DSP FAIL This alarm occurs when there is a communication problem between the UMP and DSP.


CRITICAL Software EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-ECP[d]/DSP[e]

Possible Cause This alarm issues when the:



DSP initialization is not completed.



UMP cannot receive the keep-alive response from the DSP.



Core, modem, or FPGA of the DSP is not operating normally.

Impact Cell services related to the DSP will be unavailable.



76


Alarm Raised

Step 1

FW Ver. NEW?

No

FW Update

Step 2

Yes

Yes

Collect SW Log

ECP DSP FAIL Alarm Raised? No

Step 3

INIT-DSP (ECP)

Step 4

ECP DSP FAIL Alarm Raised?

No

Yes

Step 5

INIT-SYS

ECP DSP FAIL Alarm Raised?

No

Yes

Replace Board

1

End


a



2 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. After the firmware has been updated, check whether the alarm is raised:

a

Run the RTRV-ALM-LIST command. Check whether the ECP DSP_FAIL alarm has been declared.

3 Run the INIT-DSP command to restart the DSP. a

Set the BD_ID ECP ID and DSP_ID to DSP ID, and then run this command.


77


b Check whether the ECP DSP_FAIL alarm has been declared. 4 Run the INIT-SYS command to restart the system. a


b Check whether the UMP DSP_FAIL alarm has been declared. 5 If the alarm remains, collect the SW log and replace the faulty board.


78


A2116376R ECP CPRI FAIL This alarm occurs when the Loss of Signal (LOS) or Loss of Frame (LOF) occurs in the Common Platform Radio Interface (CPRI) layer.


MAJOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-ECP[d]/PORT[e]

Possible Cause This alarm issues when:



LOS: More than 16 8B/10B violations are detected in the overall CPRI hyper frame.



LOF: The hyper frame alignment (BYTE=K28.5 & Y=W=X=0) is not achieved on the CPRI synchronization state.

Impact Cell services related to the RRH that is connected to the relevant ECP port will be unavailable.




79


Alarm Raised

RRH/ECP FW Ver. NEW?

Step 1

No

RRH/ECP FW Update

Yes Yes

Restart RRH

Step 2

ECP CPRI FAIL Alarm Raised? No

ECP CPRI FAIL Alarm Raised?

No

Yes

Restart ECP

Step 3

ECP CPRI FAIL Alarm Raised?

No

Yes

Step 4

Collect SW Log

On Site Action

1

End

Check whether the RRH firmware is the latest version by running the RTRVRRH-INVT command.

a

Set the CONN_BD_ID to ECP Number and CONN_PORT_ID to Port Number, and then run this command.

b Check whether the FW_VERSION on the output window displays the latest version.

c

If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. Check whether the ECP CPRI_FAIL alarm has been declared.

d If the alarm is not cleared, run the RTRV-PRC-FW command to check whether the ECP firmware is the latest version. i



80


ii

Check the output on whether the NAME, VERSION, and BUILD_TIME of each firmware are the most recent one.

iii If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware.

e

Check whether the ECP CPRI_FAIL alarm has been declared.

2 Run the INIT-RRH command to restart the RRH connected to the ECP. a

Set the CONN_BD_ID ECP Number and CONN_PORT_ID to Port Number, and then run this command.

b Check whether the ECP CPRI_FAIL alarm has been declared. 3 If the alarm is not cleared, run the INIT-PRC command to restart the ECP. a

Set PRC_UNIT_TYPE, PRC_INIT_ID, and RESET_MODE to ECP, ECP Number, and HW, and then run this command.

b Check whether the ECP CPRI_FAIL alarm has been declared. 4 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.



81


Step 3 Conduct visual inspection on ECP mounting state

Alarm occurrence

Broken/damage ?

Yes

Replace ECP

Enter the base station No Remount ECP Step 1

Inspect optic modules and connection state of optic cables No Alarm Clear? Optic modules and cables are connected normally?

Yes

Step 5

Remount the optic module and optic cable

Alarm Clear? Step 6

Alarm Clear?

No

Yes

1

No Replace ECP

No

Step 2

Yes

Yes

No

Inspect RRH (refer to RRH inspection manual) As the ECP is not defective, remount it.

After recording the history, clear the alarm situation and start monitoring.


Record if anything significant to report is found after inspecting the front side of the ECP.

o

Record the mounting state of the optical cable after inspection.  If mounting status of the optical cable or module is abnormal, continue with the Step 2.  If mounting state of the optical cable or module is normal, continue with the Step 3.

2 Remount the optical cable or module. After recording history, continue to monitor the alarm state.

3 Check if any damages are found on the ECP after dismounting it. Items to be inspected After dismounting the ECP, record if anything significant to report is found such as damages, water mark, and so on within the board. o

If the ECP found damaged or broken, replace the defective ECP. After recording the history, keep on monitoring its state.


82


o

If nothing significant to report found on the external side of the ECP, continue with the Step 4.

4 Remount the ECP. If the alarm is cleared, continue to monitor the alarm state after recording history. If the alarm remains, continue with the Step 5.

5 Replace the ECP. o

If the alarm is cleared after replacement, continue to monitor the alarm state after recording history.

o

If the alarm remains after replacement, continue with the Step 6.

6 As the ECP is not defective, remount the replaced ECP. As RRH probably seems to be the main cause of the defect, inspect the RRH. For information on ECP replacement, see LTE eNB Hardware Addition and Replacement Manual.


83


A2116378R ECP OPTIC TRANSCEIVER RX LOS This alarm occurs when the optical cable is disconnected or when the optical signal level falls below the normal parameters.



Possible Cause The optical cable is disconnected or the optical signal level is below the normal parameters.

Impact The service will be disabled for the link.




84


Alarm Raised

ECP FW Ver. NEW?

Step 1

No

ECP FW Update

Yes

Step 2

Yes

Restart ECP

ECP OPTIC TRANSCEIVER RX LOS Alarm Raised? No

ECP OPTIC TRANSCEIVER RX LOS Alarm Raised?

No

Yes

Step 3

Collect SW Log

On Site Action

1

End

Run the RTRV-PRC-FW command to check whether the ECP firmware is the latest version.

a



c


d Check whether the ECP OPTIC_TRANCEIVER_RX_LOS alarm has been declared.

2 If the alarm is not cleared, run the INIT-PRC command to restart the ECP. a

Set PRC_UNIT_TYPE, PRC_INIT_ID, and RESET_MODE to ECP, ECP Number, and HW, and then run this command.

b Check whether the ECP OPTIC_TRANCEIVER_RX_LOS alarm has been declared.



85



Step 3

Step 1

Alarm occurrence

Visual inspection on ECP mounting state


Broken/damaged ?

Yes

Replace the ECP.

No Inspect optic modules and connection status of optic cables

Remount ECP

Step 4

Alarm Clear? Optic modules and cables are connected normally?

Step 2

No

Yes

Step 5

No

Yes

Change the location of optic cables.

Remount the optic module and optic cable

Alarm Clear?

No

Measure the optic power, inspect the environment and RRH (Refer to RRH manual)

Yes

Step 6 Replace the optic module.

Alarm Clear?

No

Alarm Clear?

Yes

Yes

No

Step 7

1

After recording history, clear the situation and start monitoring.

Replace the ECP.

check if the generated alarm is maintained in LSM after entering the base station and conduct visual inspection on the state of DU shelf. Items to be inspected o

Record if anything significant to report is found on the front side of the ECP.

o

Record the mounting state of optical cables or modules after inspection.  If mounting status of the optical cable or module is abnormal, continue


86


with the Step 2.  If mounting statue of the optical cable or module is normal, continue with the Step 3.

2 Remount the optical cable or module. After recording history, continue to monitor the alarm state.

3 Remount the optical cable or module. Check if any damages are found on the ECP after dismounting it. Items to be inspected After dismounting the ECP, record if anything significant to report is found such as damages, water mark etc. within the board. o

If the ECP found damaged or broken, replace the defective ECP. After recording the history, continue to monitor its state.

o

If noting significant to report found on the external side of the ECP, continue with the Step 4.


5 Check the optic module by connecting its cable from the defective port to other optic module of a normal port. o

If the alarm is cleared after the mounting, continue with the Step 6. After recording history, continue to monitor the alarm state.

o

If the alarm is maintained after the mounting, measure the optic power as the defect is not caused by the ECP or optic module. If the optic power found abnormal, inspect the optic environment or RRH.

6 Replace the optic module, which is found to be abnormal. o

If the alarm is cleared, record history and continue to monitor the alarm state.

o

If the alarm is maintained, continue with the Step 7.

7 Replace the ECP. For information on ECP replacement, see LTE eNB Hardware Addition and Replacement Manual. If the alarm is cleared, record the current status and observe any reoccurrence. Record the fault details and affix them to the faulty ECP. If the alarm remains, consult with Samsung for the next level of maintenance support.


87


A2116379R ECP OPTIC TRANSCEIVER TX FAULT This alarm occurs when the monitored power level of the signal generated by the laser diode in the optical module is abnormal.



Possible Cause The monitored power level of the laser diode signal in the optical module (modulation current and bias current) is abnormal.

Impact The service will be disabled for the link.




88


Alarm Raised

ECP FW Ver. NEW?

Step 1

No

ECP FW Update

Yes

Step 2

Yes

Reset ECP

ECP OPTIC TRANSCEIVER TX FAULT Alarm Raised? No

ECP OPTIC TRANSCEIVER TX FAULT Alarm Raised?

No

Yes

Step 3

Collect SW Log

On Site Action

1

End

Run the RTRV-PRC-FW command to check whether the ECP firmware is the latest version.

a



c


d If the alarm is raised even when the firmware is the latest version, continue with the next step.

e

Check whether the ECP OPTIC_TRANSCEIVER_TX_FAULT alarm has been declared.

2 If the alarm is not cleared, run the INIT-PRC command to restart the ECP. a

Set the PRC_UNIT_TYPE, PRC_INIT_ID, and RESET_MODE to ECP, ECP Number, and HW, and then run this command.

b Check whether the ECP OPTIC_TRANCEIVER_TX_FAULT alarm has been declared.



89



Step 3 Check ECP dismounting and conduct visual inspection

Alarm occurrence

Step 1

Broken/damaged?


Yes

Replace the ECP

No Check mounting state of the optic module

Step 4

Remount the ECP

Alarm Clear? Optic modules are connected normally?

Step 2

No

Yes

Step 5

No

Yes

Change the location of the optic module

Remount the optic module

Alarm Clear?

Yes

Replace the ECP

No

Step 6 Replace the optic module

Alarm Clear?

After recording history, clear the situation and keep on monitoring

No

Yes

1

check if the generated alarm is maintained in LSM after entering the base station and conduct visual inspection on the state of DU shelf. Items to be inspected o

Record if anything significant to report is found on the front side of the ECP.

o

Record mounting state of optical cables or modules after inspection  If mounting state of the optic module is abnormal, continue with the Step 2.  If mounting state of the optic module is normal, continue with the Step 3.


90


2 Remount the optic module. After recording history, continue to monitor the alarm state.

3 Remount the optic module. Check if are any damages are found on the ECP after dismounting it. Items to be inspected After dismounting the ECP, record if anything significant to report is found such as damages, water mark etc. within the board. o

If the ECP found damaged or broken, replace the defective ECP. After recording the history, continue to monitor its state.

o

If noting significant to report found on the external side of the ECP, continue with the Step 4.


5 Mount the optical cable from the defective port to other optic module of a normal port. o

If the alarm is cleared after the optic module mounted on the other normal port, replace the ECP as the optic module is not defective. After recording history, continue to monitor the alarm state.

o

If the alarm occurs in the corresponding port after the optic module is mounted to the other normal port, continue with the Step 6, as the optic module seems defective.

6 Replace the optic module. After recording history, continue to monitor the alarm state. For information on ECP replacement, see LTE eNB Hardware Addition and Replacement Manual.


91


A2116381R ECP COMMUNICATION FAIL This alarm occurs when there is a communication problem between the UMP and ECP.


MAJOR Software EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-ECP[d]

Possible Cause The main processor (UMP) did not receive the keep-alive response from the ECP.




92


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes Yes

ECP Restart

Step 2

ECP COMMUNICATION FAIL Alarm Raised? No

ECP COMMUNICATION FAIL Alarm Not Cleared?

No

Yes

System Restart

Step 3


No

Yes

Step 4

Restart FM Block


No

Yes

Collect SW Log

Step 5


No

Yes

Replace Board

Step 6

1

End


a


b Check the output on whether the NAME, VERSION, and BUILD_TIME Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

93


of each firmware are the most recent one.

c

If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-RRH-FW command to update the firmware.

d After the firmware has been updated, check whether the alarm is raised. e

Check whether the ECP COMMUNICATION FAIL alarm has been declared.

2 If the alarm is not cleared, run the INIT-PRC command to restart the ECP that has raised the alarm. Check whether the alarm has been raised after the ECP restart. If not, terminate the procedure. If yes, continue with the next step.

3 Run the INIT-SYS command to restart the system. Check whether the alarm has been raised after the system restart. If not, terminate the procedure. If yes, continue with the next step.

4 Reset the FM block. a

Set the PRC_UNIT_TYPE, PRC_UNIT_ID, and SW_UNIT_NAME to ECP, Unit Number, and FM respectively, and then run the INIT-SW command to restart the FM block.

b Check whether the alarm has been raised after the FM restart. If not, terminate the procedure. If yes, continue with the next step.

5 Collect the SW log and share with Samsung for the next level of maintenance support.

6 If the alarm remains, replace the faulty board. For information on board replacement, see LTE eNB Hardware Addition and Replacement Manual. To check the Fail Safe Boot Mode switch: Check the on/off status of the S1 switch on the board. The S1 switch location is shown in the figure below.


94


S1

S1 ON

If the switch is OFF, change it to the ON. The default position of the S1 switch is ON. However, if the switch is OFF, the board cannot be loaded. Make sure the switch is set to ON before mounting the board.


95


A2116607R ECP SFN FAIL This alarm occurs when there is no increase or decrease in SFN for more than 10 consecutive measurements at 10 ms intervals.


CRITICAL Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-ECP[d]/DSP[e]

Possible Cause The SFN is measured at every 10 ms. If there is no increase or decrease in SFN for more than 10 consecutive measurements, an alarm is generated.

Impact This alarm does not have any impact on the system.




96


Alarm Raised

GPSR Alarm, UMP/ECP Clock Fail Alarm Raised?

Step 1

Yes

Actions To Clear Each Alarm

No

Step 2

Yes

DSP Restart

ECP SFN FAIL Alarm Raised? No

ECP SFN FAIL Alarm Raised?

Step 3

ECP Restart


Step 4

System Restart

Step 5


Collect SW Log, On Site Action

1

No

No

No

End

Run the RTRV-ALM-LIST command to check whether the GPSR alarm, UMP Clock alarm, and ECP Clock alarm have been raised.

a

Check for alarms that have UNIT_TYPE set to GPSR, UMP, or ECP, and ALARM_TYPE set to CLOCK_FAIL.

b If an alarm is on the list, follow the remedy. 2 If the alarms listed on Step 1 have not been declared or the SFN FAIL alarm remains even after carrying out the remedy for each alarm, run the INIT-DSP command to restart the DSP that has raised the alarm.

3 If the alarm is not cleared after the DSP restart, run the INIT- PRC command to restart the ECP which has raised the alarm.

4 If the alarm is not cleared after the ECP restart, run the INIT-SYS command Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

97


to restart the system.



Alarm generated


Step 1

After dismounting ECP, execute visual inspection on ECP and backboard edge pins.

Broken/damaged ?

Remount ECP

No

Alarm Clear?

Yes

Step 2

Step 3

Yes

No

When ECP damaged or broken: replace ECP Backboard damaged: Replace UADU

Replace ECP

Alarm Clear?

Step 4

Yes

No

After replacing UMP, remounting the ECP

Step 5

After recording history, clear the alarm situation and start monitoring.

1


Record if anything significant to report is found after inspecting the front side of the DU shelf.

o

After dismounting the ECP, record if anything significant to report is found such as damages, water mark etc. within the board.


98


o

Record if any damages are found on the ECP pin after inspection.

o

Record if any damages are found on the DU shelf backboard pin after inspection.  If the ECP or the backboard of DU shelf found damaged, continue with the Step 2.  If no defects found in the ECP or in the backboard of the DU shelf, continue with the Step 3.

2 Replace the broken or damaged part. After record the updated history, continue to monitor the alarm state.

3 If nothing significant to report found in the DU shelf or the ECP after visual inspection, remount the ECP. o

If the alarm is cleared after the remounting the ECP, continue to monitor the alarm state after recording history.

o

If the alarm is maintained after the remounting, continue with the Step 4.

4 Replace the ECP o

If the alarm is not cleared, execute Step 5.

o

If the alarm is cleared after the replacing ECP, keep on monitoring the alarm state after recording history.

5 After replacing the UMP, remounting the ECP. After recording history, clear the alarm situation, and continue to monitor the alarm state. For information on ECP and UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


99


A2149216R RRH TEMPERATURE HIGH This alarm occurs when the value of the RF unit temperature sensor is above the threshold.


MAJOR Hardware ENVIRONMENT RRH[a_b_c]-RRH[a_b_c]

Possible Cause The value of the RF unit temperature sensor is above the threshold.

Impact The service (call) will be unavailable.




100


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes Yes

Run RTRV-RRH-STS Check TEMP[C]

RRH TEMPERATURE HIGH Alarm Raised? No

Step 2

INIT-RRH

Step 3

RRH TEMPERATURE HIGH Alarm Raised?

No

Yes

Collect SW, RRH Log

On Site Action

1

End


a



c


d Check whether the RRH DC_INPUT_FAIL alarm has been declared. 2 If the alarm is not cleared, run the RTRV-RRH-STS command to check the RRH temperature.

a

Set the CONN_BOARD_ID and CONN_PORT _ID to the target RRH values, and then run this command.

b Check the TEMPERATURE[C] value on the output window. 3 Run the INIT-RRH command to restart the RRH connected to the ECP. a

Set the CONN_BD_ID to ECP Number and CONN_PORT_ID to Port


101


Number, and then run this command.

b Check whether the RRH TEMPERATURE_HIGH alarm has been declared.

4 If the alarm remains, collect the SW and RRH logs and share with Samsung for the next level of maintenance support.

On-site Actions To analyze and resolve the alarm: RRH Temperature High Alarm Occurs

Check RRH Installed State and External Environment

Installation/Environment Normal Y/N

No

Take Action on Installation and Environmental Issues

Yes No

RRH Reset

Alarm Cleared Y/N Yes

Alarm Cleared Y/N

Yes

Replace RRH

Record Action History and Leave

1

At the site, check if the alarm is still active in the LSM.

2 Check the state of the installed RRH and conduct visual inspection on the external environment. o

Check if the antenna cable to RRH is normally connected and if the RRH is normally mounted to the pole. If not, take corrective actions.

o

If foreign substances are found on the radiation fin preventing the air flow, eliminate them.


102


[RRH front radiation fin] [ RRH 전면부 방열핀]

o

[RRH rear radiation fin] ] [ RRH 후면부 방열핀

Check if there are external radiation elements that may change temperature around the RRH. If found, take a proper action to fix the condition.

3 If the installation state is normal, reset the corresponding RRH and check whether it clears the alarm.

4 If the alarm remains, replace the RRH. For information on RRH replacement, see LTE eNB Hardware Addition and Replacement Manual.


103


A2149338R RET MOTOR JAM This alarm occurs when the motor does not move.


MINOR Hardware EQUIPMENT RRH[a_b_c]-RRH[a_b_c]

Possible Cause The motor does not move.

Impact The RET controller will not be able to control the actuator for SET TILT, CALIBRATION, and SELF TEST.




104


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes

Step 2

Yes

INIT-ALD

Alarm Raised? No

Alarm Raised?

Step 3

No

Yes

Collect Log

On Site Action

1

End

Check whether the RET firmware is the latest version by executing the RTRVALD-INVT command.

a



c

If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-ALD-FW command to update the firmware.

d Check whether the RET_MOTOR_JAM alarm has been declared. 2 Reboot the RET by executing the INIT-ALD command. a


b Check whether the RET_MOTOR_JAM alarm has been declared. 3 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


105


RET Motor Jam Alarm Raised

No

Check the antenna and the external connection of the RET

Step 1

Step 2

Take action for abnormal installation status and abnormal environmental factors

No

Are the installation status and external environment status normal? Yes

No Step 3

Alarm Clear?

Unmount the RET unit

Yes

Check if the RET unit's connecting part is normal

No

Check if the antenna is abnormal

Yes

Step 4

Remount the RET unit

Yes

No

Yes Replace the antenna and remove the RET unit

Alarm Clear? No

Replace the RET unit

Step 5

Summarize actions taken and exit the station

1


2 Check the antenna installation status and the external environment where the RET unit is installed. Check if the RET unit and the AISG cable attached to it are connected normally. If not, then take necessary actions.

3 If installation status is normal, unmount the RET unit and check if there is damage to the connecting part or if connectivity is normal. If the part of the antenna that connects to the RET unit is damaged, replace the antenna, connect the new antenna to the RET unit, and then check if the alarm clears.

4 If the connecting parts of the antenna and the RET unit are not damaged, and connectivity is normal, remount the RET unit and check if the alarm clears.

5 If the alarm remains, replace the RET unit. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

106


For information on RET unit replacement, consult with Samsung.


107


A2149339R RET ACTUATOR JAM This alarm occurs when the actuator jam has been detected.



Possible Cause An actuator jam has been detected. There is no movement of the actuator; however movement of the motor was detected.

Impact The RET controller will not be able to control the actuator for SET TILT, CALIBRATION, and SELF TEST.




108


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes

Step 2

Yes

INIT-ALD

Alarm Raised? No

Alarm Raised?

Step 3

No

Yes

Collect Log

On Site Action

1

End


a



c


d Check whether the RET_ACTUATOR_JAM alarm has been declared. 2 Reboot the RET by executing the INIT-ALD command. a


b Check whether the RET_ACTUATOR_JAM alarm has been declared. 3 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


109


RET Actuator Jam Alarm Raised

No


Step 1

Step 2


No


No Step 3

Alarm Clear?

Unmount the RET unit

Yes

Check if the RET unit's connecting part is normal

No


Yes

Step 4


Yes

No


Alarm Clear? No


Step 5


1


2 Check the antenna installation status and the external environment where the RET unit is installed. Check if the RET unit and the AISG cable attached to it are connected normally. If not, take necessary actions.

3 If installation status is normal, unmount the RET unit and check if there is damage to the connecting part or if connectivity is normal. If the part of the antenna that connects to the RET unit is damaged, replace the antenna, connect the new antenna to the RET unit, and then check if the alarm clears.

4 If the connecting parts of the antenna and the RET unit are not damaged, and connectivity is normal, remount the RET unit, and check if the alarm clears.


110




111


A2149340R RET NOT CALIBRATED This alarm occurs when the device has not completed a calibration operation or calibration has been lost.



Possible Cause The device has not completed a calibration operation or calibration has been lost.

Impact The commands for setting Tilt and Self-Test will not be executed.




112


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes

Step 2

Yes

INIT-ALD

Alarm Raised? No

Alarm Raised?

Step 3

No

Yes

Collect Log

On Site Action

1

End


a



c


d Check whether the RET_NOT_CALIBRATED alarm has been declared. 2 Reboot the RET by executing the INIT-ALD command. a


b Check whether the RET_NOT_CALIBRATED alarm has been declared. 3 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


113


RET Not Calibrated Alarm Raised

No


Step 1

Step 2


No


Step 3

Is Alarm cleared after calibration?

No Unmount the RET unit

Yes Check if the RET unit's connecting part is normal

No


Yes

Step 4


Yes

No


Is Alarm cleared after calibration? No


Step 5


1


2 Check the antenna installation status and the external environment where the RET unit is installed. Check if the RET unit and the AISG cable attached to it are connected normally. If not, then take necessary actions.

3 If the installation status is normal, unmount the RET unit and check if there is damage to the connecting part or if connectivity is normal. If the part of the antenna that connects to the RET unit is damaged, replace the antenna, connect the new antenna to the RET unit, and then check if the alarm clears.

4 If the connecting parts of the antenna and the RET unit are not damaged, and connectivity is normal, remount the RET unit and check if the alarm clears.


114




115


A2149341R RET NOT CONFIGURED This alarm occurs when actuator configuration data is missing.



Possible Cause Actuator configuration data is missing.

Impact The commands for setting Tilt and Self-Test will not be executed.




116


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes

Step 2

Yes

INIT-ALD

Alarm Raised? No

Alarm Raised?

Step 3

No

Yes

Collect Log

On Site Action

1

End


a



c


d Check whether the RET_NOT_CONFIGURED alarm has been declared. 2 Reboot the RET by executing the INIT-ALD command. a


b Check whether the RET_NOT_CONFIGURED alarm has been declared. 3 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


117


RET Not Configured Alarm Raised

Step 1

Check the alarm is still active

Step 2

Perform a RET reset

Step 3

Alarm Clear?

Yes

No

Replace RET unit

Step 4


1


2 Reset the RET unit. 3 Check if the alarm clears. 4 If the alarm remains, replace the RET unit. For information on RET unit replacement, consult with Samsung.


118


A2149342R RET HW ERROR This alarm occurs when there is an error in the unclassified hardware.



Possible Cause Any hardware error that cannot be classified may not be reported as an alarm until the fault is likely to be persistent.





119


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes

Step 2

Yes

INIT-ALD

Alarm Raised? No

Alarm Raised?

Step 3

No

Yes

Collect Log

On Site Action

1

End


a



c


d Check whether the RET_HW_ALARM alarm has been declared. 2 Reboot the RET by executing the INIT-ALD command. a


b Check whether the RET_HW_ALARM alarm has been declared. 3 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


120


RET HW Error Alarm Raised

Step 1


Step 2

Perform a RET reset

Step 3

Alarm Clear?

Yes

No

Replace RET unit

Step 4


1


2 Reset the RET unit. 3 Check if the alarm clears. 4 If the alarm remains, replace the RET unit. For information on RET unit replacement, consult with Samsung.


121


A2149343R RET ACTUATOR INTERFERENCE This alarm occurs when an actuator movement outside the control of the RET unit has been detected.



Possible Cause An actuator movement outside the control of the RET unit has been detected.





122


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes

Step 2

Yes

INIT-ALD

Alarm Raised? No

Alarm Raised?

Step 3

No

Yes

Collect Log

On Site Action

1

End


a



c


d Check whether the RET_ACTUATOR_INTERFERENCE alarm has been declared.

2 Reboot the RET by executing the INIT-ALD command. a

Set the CONN_BD_ID ECP Number and CONN_PORT_ID to Port Number, and then run this command.

b Check whether the RET_ACTUATOR_INTERFERENCE alarm has been declared.



123


On-site Actions To analyze and resolve the alarm: RET Actuator Interference Alarm Raised

Step 1


Step 2

Perform a RET reset

Step 3

Alarm Clear?

Yes

No Step 4

Execute Calibration

Step 5

Alarm Clear?

Yes

No

Replace RET unit

Step 6


1


2 Reset the RET unit. 3 If the alarm does not clear, perform RET calibration. 4 Reset the RET unit. 5 Check if the alarm clears. 6 If the alarm remains, replace the RET unit. For information on the connecting antenna module, see Samsung MBS (LTE) Installation Manual.

For information on the antenna module replacement, see installation manual of antenna vendor. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

124


A2149351R RRH CLOCK FAIL This alarm occurs when the clock used inside the RF unit is not normal.


MAJOR Hardware EQUIPMENT RRH[a_b_c]-RRH[a_b_c]

Possible Cause The clock used inside the RF unit is not normal. When PLL in the RU is unlocked or when reference clock supply from CPRI is abnormal.





125


Alarm Raised

Step 1

FW Ver. NEW?

No

FW Update

Yes Yes

RTRV-ALM-LIST

RRH CLOCK FAIL Alarm Raised? No

Step 2

ECP CLOCK Alarm Raised?

Yes

No Actions To Clear ECP CLOCK Alarm

RRH CLOCK FAIL Alarm Raised?

No

Yes

INIT-RRH

Step 3

RRH CLOCK FAIL Alarm Raised?

No

Yes

Collect SW, RRH Log

On Site Action

1

End


a



c



126


d Check whether the RRH CLOCK_FAIL alarm has been declared. 2 If the alarm is not cleared even when the RRH firmware is the latest version, run the RTRV-ALM-LIST and if an ECP CLOCK_FAIL alarm is on the list, refer to the ECP CLOCK_FAIL Alarm Remedy. If an ECP CLOCK_FAIL alarm has not been raised, run the INIT-RRH command to restart the RRH connected to the ECP (by inputting the CONN_BD_ID and CONN_PORT_ID).

a


b Check whether the RRH CLOCK_FAIL alarm has been declared. 3 If the alarm remains, collect the SW and RRH logs and share with Samsung for the next level of maintenance support.


RRH Clock Fail Alarm Occurs

Check CPRI Cable Connection and Disassemble/Reassemble after Cleaning the Optic Connector

Alarm Cleared ?

Yes

No

RRH Reset

Alarm Cleared ?

Yes

No

Replace RRH


1

Check the connection state between the optical cable and optic module of the RRH and ECP.


127


[DUCPRI CPRI Cable] [ DU Cable ]

CPRI Cable] CPRI Cable] [ RRH_V2 Cable ] [[RRH_V1 RRH_V1 CPRI Cable ] [RRH_V2CPRI

2 If the connection of the optical cable and optic module is normal, clean the optical cable connector. Then, re-connect to check for alarm recurrence Y/N.

[IBC Optic Cleaner: P/N 9393]

[IBC Optic Cleaner : P/N 9393]

3 If the alarm is not cleared, reset the corresponding RRH. 4 If the alarm remains, replace the corresponding RRH. For information on RRH replacement, refer the LTE MBS(eNB) Installation Manual. o

If the alarm is not cleared even after the RRH is replaced, check the status of the ECP that is connected to the RRH. If there is a problem with the ECP, replace the optic module.

o

If the alarm remains, replace the ECP.

For information on ECP replacement, refer the LTE eNB Hardware Addition and Replacement Manual.


128


A2149381R RRH COMMUNICATION FAIL This alarm occurs when there is a communication problem between the UMP and RRH.


CRITICAL Software EQUIPMENT RRH[a_b_c]-RRH[a_b_c]

Possible Cause The main processor (UMP) has not received the keep-alive response from the RRH.

Impact Cell services related to the RRH will be unavailable.




129


Alarm Raised

Step 1

FW Ver. New?

Yes

FW Update

NO Yes

RRH COMMUNICATION FAIL Alarm Raised? No

Step 2

Actions To Clear CPRI Alarm

CPRI Alarm Raised? No Yes

Step 3

RRH COMMUNICATION FAIL Alarm Raised?

No

RRH Restart

RRH COMMUNICATION FAIL Alarm Raised?

No

Yes

Step 4

Collect SW, RRH Log

On Site Action

1

End


a



c


d Check whether the RRH COMMUNICATION FAIL alarm has been declared. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

130


2 Run the RTRV-ALM-LIST to check whether the CPRI_FAIL, OPTIC_TRANSCEIVER_RX_LOS, and OPTIC_TRANSCEIVER_TX_ FAULT alarms have been raised on the optic port of the target RRH. If any of these alarms have been declared, refer to their remedies. Check whether the RRH COMMUNICATION FAIL alarm is raised after following the remedy.

3 If the above alarms have not been raised, run the INIT-RRH command to restart the target RRH.

a


b Check whether the RRH COMMUNICATION FAIL alarm has been declared.




131


RRH Communication Fail Alarm Occurs

Check Optic Port LED and Alarm-occurred Sector

Swap Tx/Rx Connectors of Defective Port CPRI Cable

Replace Defective Port Optic Module Check P/N of the Optic Module upon Replacement

Yes

No

Alarm Cleared? Y/N

Yes

Alarm Cleared? Y/N


No

Check LED after Opening RRH Window

LED Turn On?

No

Check RRU Input Voltage [Normal Voltage: -40 to -57 V]

Yes Replace Optic Cable and Optic Module of RRH. Check the Optic Module P/N upon Replacement

Yes

Alarm Cleared? Y/N No

RRH Reset

Yes

Normal Voltage Y/N No

Yes

Take Corrective Action after Rectifier/Power Cable Inspection

Alarm Cleared? Y/N No

Replace RRH

No

Alarm Cleared? Y/N Yes


1


2 Check the LED of the ECP optic port to identify the target sector where a failure had occurred. The optic port for which LED is turned off indicates the failure-occurred sector. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

132


LED Green Light Check Point

3 Swap the Tx connector of a defective port CPRI cable with its Rx connector, and check if the alarm is cleared.

Rx RXConnector Connector Tx TXConnector Connector

4 Clean the optic connector of the alarm-occurred port and replace the optic module. Then, check whether the alarm is cleared. When replacing the optic module, check its part number. Optic modules for RJIL RRUs consist of two types: FTLF1326P3BTL-SG and SPP-8F-LRIDFP-SEC.

[IBC optic Cleaner: P/N 9393] [IBC Optic Cleaner : P/N 9393]

When the alarm is cleared, record the action history and leave the site. If the optic module is defective, process RMA of the module.

5 If the alarm remains, check if the LED is on. For RRH_V1, LED is placed inside and can be checked by opening the window, whereas it is available from the outside for RRH_V2, as shown in figures below.


133


LED Check LED Check Point

Point

[RRH_V1 LED [ RRH_V1 LEDCheck] Check ]

LED Check Point LED Check point

[RRH_V2LED LED Check] [ RRH_V2 Check ]

6 If the LED light is turned off, check input voltage from the RRH power input port (normal range: -40 to -57 V).

[RRH_V1 voltage check point]

[RRH_V2 voltage check point]

If the voltage is not normal, inspect the rectifier and power cable. When the voltage returns to normal after inspection and proper measurement, continue with the Step 7.

7 If the LED lamp is on, replace the corresponding optical cable and optic module of the alarm-occurred RRH with new parts. Check if the alarm cleared. o

When replacing the optic module, check its part number. Optic modules used in RJIL RRUs consist of two types: FTLF1326P3BTL-SG and SPP8F-LR-IDFP-SEC.

o

If the alarm is cleared, record the action history and leave the site. When an optic power meter is ready, use it to measure the strength of optic signals received by the RRH and determine whether its optical cable is defective. The normal signal strength should be 0.5 to -10.6 dBm. Duplex-type optical cables are used in the products for India; therefore, the optic signal of dual Rx path should be measured.


134


Rx Cable

[Optic Power Meter]

Rx Cable [RRH_V1 Optic cable]

[RRH_V2 Optic cable]

8 If the alarm is not cleared despite the actions taken in Steps 5 and 6, reset the RRH.



135


A2149384R RRH DC INPUT FAIL This alarm occurs when the DC power input of the RF unit is not within the normal parameters.



Possible Cause The DC power input of the RF unit is not normal.





136


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes

Step 2

Yes

INIT-RRH

RRH DC INPUT FAIL Alarm Raised? No

RRH DC INPUT FAIL Alarm Raised?

Step 3

No

Yes

Collect SW, RRH Log

On Site Action

1

End


a



c


d Check whether the RRH DC_INPUT_FAIL alarm has been declared. 2 Run the INIT-RRH command to restart the RRH connected to the ECP. a


b Check whether the RRH DC_INPUT_FAIL alarm has been declared. 3 If the alarm remains, collect the SW and RRH logs and share with Samsung for the next level of maintenance support.


137


DC Input Fail Alarm Occurs

Check Rectifier Output Voltage [Normal Voltage: -40 to -57 V]

Output Voltage Normal Y/N?

No

Inspect Rectifier and Take Corrective Action

No

Inspect Power Cable and Take Corrective Action

Yes

Check RRH Input Voltage [Normal Voltage: -40 to -57 V]

Input Voltage Normal Y/N? Yes

RRH Reset

Alarm Cleared Y/N?

Yes

No

Replace RRH


1

At the site, check input voltage of the rectifier (normal output voltage range is from -40 to -57 V). If the output voltage is not normal, the rectifier should be inspected and appropriate measures need to be taken depending on the inspection result.

2 If the output voltage is normal, check the RRH input voltage (normal input voltage range is from -40 to -57 V)


138


[RRH_V1 Voltage Checkpoint]

[RRH_V2 Voltage Checkpoint]

If the input voltage is not normal, conduct visual inspection on the power cable for any disconnected and stripped wires. If defects are found in the inspection process, replace the power cable. For replacement, refer to RRH Installation Manual.

3 If the voltage is normal, reset the RRH. Then, check whether the alarm is cleared.



139


A2149385R RRH DISABLED This alarm occurs when the RRH is disabled.


MAJOR Hardware EQUIPMENT RRH[a_b_c]-RRH[a_b_c]/PATH[d]

Possible Cause The RRH is disabled due to the following reasons:



Initial status.



A command forced the RRH to shut down.



An alarm caused the RRH to shut down.





140


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes

Step 2

Yes

RTRV-RRH-CONF

RRH DISABLED Alarm Raised? No

PATH_ENABLE_STATE User Disabled?

Yes

No

Step 3

RTRV-CELL-STS

ADMIN STATE locked?

Yes

No

Step 4

Collect SW, RRH Logs

On Site Action

1

End


a



c


d Check whether the RRH DC_INPUT_FAIL alarm has been declared. 2 If the alarm is not cleared, run the RTRV-RRH-CONF command to check whether the PATH_ENABLE_STATE on the PATH with the declared alarm is set to UserDisabled. Check whether the output of PATH_ENABLE_STATE on the PATH with the declared alarm is set to UserDisabled. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

141


3 Run the RTRV-CELL-STS command to check whether the ADMINISTRATIVE_STATE of Cells allocated to the target RRH are set to locked. Check whether the ADMINISTRATIVE_STATE of cells allocated to the target RRH are set to locked.



RRH Disabled Alarm Occurs

RRH Reset

Alarm Cleared Y/N?

Yes

No

Replace RRH


1

Monitor Alarm Recurrence Y/N

At the site, check if the alarm is still active in the LSM. If yes, reset the RRH. Then, check whether the alarm is cleared.

2 When the alarm is cleared, wait at the site for 30 minutes to make sure that it does not recur.

3 If the alarm remains, replace the corresponding RRH. For information on RRH replacement, see LTE eNB Hardware Addition and Replacement Manual.


142


A2149388R RRH LNA FAIL This alarm occurs when the LNA Fail state lasts for 10 or more seconds.


MINOR Hardware EQUIPMENT RRH[a_b_c]-RRH[a_b_c]/PATH[d]

Possible Cause LNA Fail condition is maintained. This occurs when the LNA Fail (< 100 mA or > 250 mA) state lasts for 10 or more seconds.





143


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes Run RTRV-RRH-STS Check FA_RSSI[dBm], FA_RSSI_IQ_LEVEL

Step 2

Yes

RRH LNA FAIL Alarm Raised? No

Step 3


On Site Action

1

End


a



c


d Check whether the RRH LNA_FAIL alarm has been declared. 2 If the alarm is not cleared, run the RTRV-RRH-STS command to check the RSSI (dBm, IQ_LEVEL) value: (RU_V1: -95 to 101 dBm, RU_V2: -96 to 102 dBm)

a

Set the CONN_BD_ID and CONN_ PORT_ID to the target RRH values, and then run this command.

b Check the FA_RSSI and FA_RSSI_IQ_LEVEL values on the output window.




144


LNA Fail Alarm Occurs

RRH Reset

Alarm Cleared Y/N?

Yes

No

Replace the RRH


1


At the site, check if the alarm is still active in the LSM. If yes, reset the RRH and see whether the alarm is cleared.

2 When the alarm is cleared, wait at the site for 30 minutes and monitor alarm recurrence.



145


A2149389R RRH LOW GAIN This alarm occurs when the gain estimated from the measured RF output power is below the threshold.



Possible Cause The gain estimated from the measured RF output power is below the threshold.





146


Alarm Raised

Step 1

Run RTRV-RRH-STS Check TX_RF_POWER

Step 2

FW Ver. NEW?

No

FW Update

Yes Yes

RTRV-RRH-STS

RRH LOW GAIN Alarm Raised? No

Step 3

OP STATE disabled?

Yes

No INIT-RRH

RRH LOW GAIN Alarm Raised?

No

Yes

Step 4


On Site Action

1

End

Check the TX_RF_POWER value by running the RTRV-RRH-STS command. The value displays on the output window.

2 Check whether the RRH firmware is the latest version by running the RTRVRRH-INVT command.

a



c


d Check whether the RRH LOW_GAIN alarm has been declared. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

147


3 If the alarm is not cleared, run the RTRV-CELL-STS command to check the OPERATIONAL_STATE. If it is disabled, reset the RRH.

a

Check whether the OPERATIONAL_STATE on the output window is set to disabled.

b Set the CONN_BD_ID to ECP Number and CONN_PORT_ID to Port Number, and then run the INIT-RRH command.



RRH Low Gain Alarm Occurs

RRH Reset

Alarm Cleared Y/N?

Yes

No

Replace RRH


1


At the site, check if the alarm is still active in the LSM. If it is still on, reset the RRH and see whether the alarm is cleared.




148


A2149391R RRH OVER POWER This alarm occurs when the output power exceeds the threshold.



Possible Cause The output power is more than 1.5 dB, which is higher than the rated power.



Occurrence: Output Power ≥ 47.5 dBm



Alarm type: Over Power alarm.



Duration: 2 seconds or more.





149


Alarm Raised

Step 1

FW Ver. NEW?

No

FW Update

Yes Run RTRV-RRH-STS Check TX_RF_POWER[dBm], FA_TSSI_IQ_LEVEL

Yes

RRH OVER POWER Alarm Raised? No

Run RTRV-RRH-CONF Check OVER_PWR_ALARM_TH

Step 2

FA_RSSI_IQ_LEVEL Greater Than OVER_PWR_ALARM_TH?

No

Yes

Step 3

Run CHG-RRH-CONF Change OVER_PWR_ALARM_TH

Step 4

Run CHG-RRH-CONF Change PATH_ENABLE_STATE to UserEnabled

RRH OVER POWER Alarm Raised?

No

Yes

Step 5

RTRV-RRH-STS OP STATE disabled?

Yes

No INIT-RRH

RRH OVER POWER Alarm Raised?

No

Yes

Step 6


On Site Action


End

150


1


a



c


d Check whether the RRH OVER_POWER alarm has been declared. 2 If the alarm is not cleared, compare the results of RTRV-RRH-STS and RTRV-RRH-CONF.

a

Set the appropriate values to CONNECT_BOARD_ID, CONNECT_PORT_ID, and PATH_ID, and then run the RTRV-RRH_STS command. Check the TX_RF_POWER [dBm] and FA_TSSI_IQ_LEVEL values on the output window.

b Set the appropriate values to CONNECT_BOARD_ID and CONNECT_PORT_ID, and then run the RTRV-RRH_CONF command. Check the OVER_PWR_ALARM_TH value on the output window.

3 If FA_TSSI_IQ_LEVEL is higher than OVER_PWR_ALARM_TH, check the recommended threshold and change the OVER_PWR_ALARM_TH to the recommended level by using the CHG-RRH-CONF command.

4 After changing the recommended threshold, change the PATH_ENABL E_STATE of the PATH with the declared alarm to UserEnabled by using the CHG-RRH-CONF command.


a

Run the RTRV-RRH-STS command. Check whether the OPERATIONAL_STATE on the output window is set to disabled.

b Set the CONN_BD_ID to ECP Number and CONN_PORT_ID to Port Number, and then run the INIT-RRH command.




151


RRH Over Power Alarm Occurs

RRH Reset

Alarm Cleared Y/N?

Yes

No

Replace RRH


1


At the site, check if the alarm is still active in the LSM. If it is still on, reset the RRH and see whether the alarm is cleared.




152


A2149392R RRH VSWR FAIL This alarm occurs when the VSWR measurement (return loss) is below the threshold.


MAJOR/MINOR Hardware EQUIPMENT RRH[a_b_c]-RRH[a_b_c]/PATH[d]

Possible Cause The VSWR measurement (return loss) is below the threshold.

Impact When major alarm is occurred, cell services related to the RRH will be unavailable.




153


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes RTRV-RRH-STS Check TX_RF_POWER[dBm], FA_TSSI_IQ_LEVEL

Yes

RRH VSWR FAIL Alarm Raised? No

RTRV-RRH-CONF Step 2 Check VSWR_FAIL_MAJOR_ALARM_THR Check VSWR_FAIL_MINOR_ALARM_THR

VSWR Greater Than VSWR_FAIL_MAJOR_ALARM_THR? VSWR_FAIL_MINOR_ALARM_THR?

No

Yes CHG-RRH-CONF Modify VSWR_FAIL_MAJOR_ALARM_THR Modify VSWR_FAIL_MINOR_ALARM_THR

Step 3

CHG-RRH-CONF Change PATH_ENABLE_STATE to UserEnabled

RRH VSWR FAIL Alarm Raised?

No

Yes

Step 4

RTRV-RRH-STS OP STATE disabled?

Yes

No INIT-RRH

RRH VSWR FAIL Alarm Raised? Step 5

Collect SW, RRH Log

On Site Action

1

No

Yes

End



154


a



c


d Check whether the RRH VSWR_FAIL alarm has been declared. 2 If the alarm is not cleared, compare the results of RTRV-RRH-STS and RTRV-RRH-CONF.

a

Set the appropriate values to CONNECT_BOARD_ID, CONNECT_PORT_ID, and PATH_ID, and then run the RTRV-RRH_STS command. Check the VSWR value on the output window.

b Set the appropriate values to CONNECT_BOARD_ID and CONNECT_PORT_ID, and then run the RTRV-RRH_CONF command. Check the VSWR_FAIL_MAJOR_ALARM_THR, VSWR_FAIL_MINOR_ALARM_THR value on the output window.

3 If VSWR is greater than VSWR_FAIL_MAJOR_ALARM_THR or VSWR_FAIL_MINOR_ALARM_THR, check the recommended threshold and change VSWR_FAIL_MAJOR_ALARM_THR or VSWR_FAIL_MINOR_ALARM_THR to the recommended threshold by using the CHG-RRH-CONF command. If the alarm is a major severity alarm, after changing the relevant threshold to the recommended threshold, change PATH_ENABLE_STATE for the path where the alarm is active to UserEnabled by using the CHG-RRH-CONF command.


a

Run the RTRV-RRH-STS command. Check whether the OPERATIONAL_STATE on the output window is set to disabled.

b Set INIT-RRH inputs CONN_BD_ID and CONN_PORT_ID to the ECP Number and Port Number and then run the command.




155


VSWR Fail Alarm Occurs

Power Off RRH

Separate Antenna Cable from RRH and Check Connector Condition

Measure Antenna VSWR with Site Master Equipment

VSWR < 1.5?

No

Yes ※ Without Site Master Equipment or Terminator

Remove the Terminator after RRH Power Off

Take Corrective Action by Replacing Antenna and Jumper Cable

Power On RRH after Connecting a Terminator to RRH

Yes

VSWR < 1.5?

No

Power On RRH after Connecting Antenna Cable to RRH

Yes

Alarm Cleared Y/N? No

Power On RRH after Replacing Antenna Cables Connected to Normal and Abnormal Paths

Power Off RRH

Inspect and Replace Antenna/ Antenna Cables

Yes

Alarm Cleared Y/N? No


1

Replace RRH

At the site, check if the alarm is still active in the LSM. Additionally, check the information of target sector and path in which an alarm has occurred.

2 Power off the target RRH sector in which the alarm has occurred. From the rectifier, switch off the circuit breaker connected to the corresponding RRH. After turning off the RRH power, check if Communication Fail was found for Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

156


the corresponding RRH in LSM. If Communication Fail did not occur on the corresponding RRH, however, on another RRH, it is interpreted as that a wrong sample has been selected.

3 Separate the path cable, in which the alarm occurred, from the RRH and check its condition. Check if the cable and RRH connectors are damaged. If so, replace the cable or corresponding RRH. If moist or any foreign substances are found inside the connector that links the cable to the RRH, remove them.

[Water Inflow Inside the Connector]

[Impurities Inside the Connector]

4 If the cable state is normal, continue with the Step 5. If site-master equipment or a terminator is not prepared, continue with the Step 7.

5 Use site master equipment to measure VSWR of the antenna and jumper cable.

If VSWR value measured by the site master is 1.5:1 or more, an appropriate measure needs to be taken such as replacement of the antenna and jumper cable.

6 Connect a terminator to the RRH antenna port and check VSWR value in LSM.


157


[Terminator]

[Connecting a terminator to RRH]

If VSWR value is 1.5:1 or more, RRH needs to be replaced. If VSWR is less than 1.5:1, power off the RRH and remove the terminator.

7 Connect the antenna cable to the RRH and turn on RRH from the rectifier. Check if the alarm is cleared in LSM. When the alarm is cleared, record action history and leave the site.

8 If the alarm is not cleared even after checking the normal state of the antenna cable and cable connection state, power off the RRH again.

9 Replace the antenna cable with one from another path where no alarm has occurred and power on the RRH to see if the alarm is still activated.

10 If the alarm is cleared after the action taken in Step 9, it can be interpreted that the failure was caused by a defective cable, a connection issue or an antenna issue. Therefore, take the corrective measures in an order of reassembly of the antenna-side cable; replacement of the cable; and replacement of the antenna.



158


A2149408R RRH DIGITAL INPUT LOW This alarm occurs when the digital input power level is at or below the threshold.


MINOR Hardware EQUIPMENT RRH[a_b_c]-RRH[a_b_c]/PATH[d]/FA[0]

Possible Cause The digital input power level is the threshold or less.


Defaults This default value for this alarm is 16,900 IQ level.




159


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Yes Yes

Run RTRV-RRH-STS Check FA_RSSI_IQ_LEVEL

RRH DIGITAL INPUT LOW Alarm Raised? No

Run RTRV-RRH-CONF Check LOW_PWR_ALARM_TH

Step 2

FA_RSSI_IQ_LEVEL Less Than LOW_PWR_ALARM_TH?

No

Yes Run CHG-RRH-CONF Change LOW_PWR_ALARM_TH

Step 3

RRH DIGITAL INPUT LOW Alarm Raised?

No

Yes

Collect SW, RRH Log

On Site Action

1

End


a



c


d Check whether the RRH DIGITAL_INPUT_LOW alarm has been declared.

2 If the alarm is not cleared, compare the results of RTRV-RRH-STS and Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

160


RTRV-RRH-CONF.

a

Set the appropriate values to CONNECT_BOARD_ID, CONNECT_PORT_ID, and PATH_ID, and then run the RTRV-RRH_STS command. Check the FA_TSSI_IQ_LEVEL value on the output window by running the RTRV-RRH-CONF command.

b Set the appropriate values to CONNECT_BOARD_ID and CONNECT_PORT_ID, and then run the RTRV-RRH_CONF command. Check the LOW_PWR_ALARM_TH value on the output window.

c

If the FA_TSSI_IQ_LEVEL is lower than the LOW_PWR_ALARM_TH, check the recommended threshold and change the LOW_PWR_ALARM_TH to the recommended level by using the CHGRRH-CONF command.




161


RRH Digital Input Low Alarm Occurs

RRH Reset

Alarm Cleared Y/N?

Yes

No

Reset DSP Block of Failoccurred Cell

Alarm Cleared Y/N?

Yes

No

Replace RRH

Alarm Cleared Y/N?

Yes

No

Reset Channel Board and Replace


1

At the site, check if the alarm is still active in the LSM. If it is still on, reset the RRH and check whether the alarm is cleared.

2 If the alarm is not cleared, reset the DSP block of the failure-occurred cell. Then, check whether the alarm is cleared. Use the INIT-DSP command in the LSM to reset only the targeted cell.


4 If the alarm is still on despite the replacement of the RRH, reset the channel board. Use the INIT-PRC:ECP command, to reset the channel board.

5 If the alarm persists, replace the ECP. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

162


For information on ECP replacement, see LTE eNB Hardware Addition and Replacement Manual.


163


A2149630R ALD COMMUNICATION FAIL This alarm occurs when the main processor (UMP) cannot receive keep-alive response from the ALD.


MAJOR Hardware EQUIPMENT RRH[a_b_c]-RRH[a_b_c]

Possible Cause The main processor (UMP) cannot receive keep-alive response from the ALD.





164


Alarm Raised

Step 1

FW Ver. New?

Yes

FW Update

NO Yes

ALD COMMUNICATION FAIL Alarm Raised? No

Step 2

Take action for the CPRI Alarm

CPRI Alarm Raised? No Yes

Step 3

ALD COMMUNICATION FAIL Alarm Raised?

No

INIT-ALD

ALD COMMUNICATION FAIL Alarm Raised?

No

Yes End Step 4

Collect Log

On Site Action

1


a



c


d Check whether the ALD_COMMUNICATION_FAIL alarm has been declared. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

165


2 Check if the CPRI_FAIL, OPTIC_TRANSCEIVER_RX_LOS, and OPTIC_TRANSCEIVER_TX_FAULT alarms have been issued in the optic port to which the RET is connected by using the RTRV-ALM-LIST command. If any of these alarms have been issued, follow their remedies, and then check if the ALD_COMMUNICATION_FAIL alarm has been declared.

3 If none of the alarms have been issued, reboot the RET by using the INITALD command.

a

Set the CONN_BD_ID to ECP Number and CONN_PORT_ID to Port Number, and then run the INIT-ALD command.

b Check whether the ALD_COMMUNICATION_FAIL alarm has been declared.


On-site Actions To analyze and resolve the alarm: ALD Communication Fail Alarm Raised


Step 1

Yes

Step 2


No


Step 3

Alarm Clear?

No

RET Reset Yes

Yes Yes

Alarm Clear? No

Check if RET unit is supplied with power

Step 4

No Detach the RU's AISG cable

Yes Step 8 Step 6 Check if the RU RET port outputs power

Replace RET Unit

Step 5

Step 7 Summarize actions taken and exit the station

1

Yes

Replace the AISG cable unit

No

Replace the RU or reset the RU



166


2 Check if the RET unit and the AISG cable attached to it are connected normally. If not, take necessary actions.

3 Reset the RET unit and check if the alarm clears. 4 If the alarm remains, check if power is supplied from the RET daisy chain port. 5 If power is being supplied, replace the RET unit. 6 If power is not being supplied, disconnect the RU AISG cable and check if power is outputted from the RU RET port.

7 If power is not outputted from the RU, reset the RU. o

Check if the alarm clears after the reset.

o

If the alarm remains, replace the RU.

8 If power is outputted from the RU, replace the AISG cable.


167


A2149649R RRH HW TYPE MISMATCH This alarm occurs when the connected RRH hardware type mismatches with the configured one.


MAJOR Software EQUIPMENT RRH[a_b_c]-RRH[a_b_c]

Possible Cause Connected RRH hardware type did not match the configured RRH hardware type.


Remedy Off-site Actions via LSM before Site Visit To analyze and resolve the alarm:


168


Alarm Raised

Step 1

Grown RRH Type Same As Equipped RRH Type?

No

Grown RRH Type the Problem?

Yes

On Site Action

Yes

Re-Grow as Equipped RRH Type

Yes

Step 3

No

Alarm Raised?

Step 2

No

RRH FW update

FW Ver. NEW? Yes Yes

Step 4

Alarm Raised?

No

System Restart

Alarm Raised?

Collect SW Log

On Site Action

1

End

Check whether the grown RRH type matches the equipped RRH type by running the RTRV-RRH-CONF and RTRV-RRH-INVT commands.

a

Run the RTRV-RRH-CONF command by selecting the CONNECT_BOARD_ID and CONNECT_PORT_ID that has raised the alarm as inputs. Run the RTRV-RRH-INVT command by selecting the CONN_BD_ID and CONN_PORT_ID that has raised the alarm as inputs.

b Compare the BOARD_TYPE of RTRV-RRH-CONF and TYPE_NUM of RTRV-RRH-INVT to check whether they are the same RRH. If the RRH Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

169


is the same, continue with the Step 3.

2 If the grown RRH type is the problem, continue with the Step 2. If the equipped RRH type is the problem, continue to ‘On-site Actions’.

3 If the grown RRH type and equipped RRH type are not the same, run the CHG-RRH-CONF to grow the equipped RRH type.

a

Run the RTRV-RRH-INVT command to check the equipped RRH type, and then regrow the equipped RRH type.

b Check whether the alarm is raised after the regrow. 4 Check whether the RRH firmware is the latest version by running the RTRVRRH-INVT command. If the firmware is not the latest version, run the DNLDFW command to download the latest version and the UDT-RRH-FW command to update the firmware.

a

Set the CONN_BD_ID to ECP Number and CONN_PORT_ID to Port Number, and then run the RTRV-RRH-INVT command.

b Check whether the RRH HW TYPE MISMATCH alarm has been declared. 5 If the alarm is not cleared, run the INIT-SYS command to restart the system. If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


170


A2180001R GPSR TOD MSG MISSED This alarm occurs when initialization due to GPSR restart or GPSR module failure has occurred.


MAJOR Software COMMUNICATIONS RACK[a]/SHELF[b]/SLOT[c]-GPSR[d]

Possible Cause The main processor does not receive the TOD message from the GPSR.





171


Alarm Raised

Step 1

UMP/GPS FW Ver. NEW?

No

UMP/GPS FW Update

Yes Yes

Collect SW Log

GPS TOD MSG MISSED Alarm Raised? No

Step 2

UMP PROCESS DOWN (scm)Alarm Raised?

Yes

Actions To Clear UMP PROCESS DOWN (scm)

No

INIT-SW UMP scm

Step 3

GPS TOD MSG MISSED Alarm Raised?

No

Yes

Restart GPS

Step 4


No

Yes


Step 5


No

Yes

Collect SW Log

On Site Action

1

End

Run the RTRV-PRC-FW command to check whether the UMP firmware is the latest version. Run the RTRV-GPS-INVT command to check whether the GPS firmware is the latest version.


172


a



c

If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest version, collect the SW log.

d Check whether the GPSR TOD MSG MISSED alarm has been declared. e

Run the RTRV-GPS-INVT command.

f

Check whether the FW_VERSION on the output window displays the latest versions.

g If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest version, collect the SW log.

h Check whether the GPSR TOD MSG MISSED alarm has been declared. 2 Run the RTRV-ALM-LIST command to check the list of alarms, and then restart the SCM block.

a

If the UMP PROCESS_DOWN (scm) alarm is on the list, follow its remedy.

b If the SCM block is currently running, set the PRC_UNIT_TYPE to UMP and SW_UNIT_NAME to SCM Image Name, and then run the INIT-SW command

c

Check whether the GPSR TOD MSG MISSED alarm has been declared.

3 If the alarm remains, run the INIT-GPS command to restart the GPSR. Check whether the GPSR TOD MSG MISSED alarm has been declared.

4 Run the INIT-PRC command to restart the UMP. a

Set the PRC_UNIT_TYPE to UMP and RESET_MODE to HW, and then run this command.

b Check whether the GPSR TOD MSG MISSED alarm has been declared. 5 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.



173


After entering the site

ANTENNA_FAIL, LOCKING FAIL alarm actions

Yes

Antenna Fail/Locking fail occurrence history No

Reboot the UMP

Yes

The UMP error is recovered? (Y/N) No

Monitoring

1

Replace the UMP

Check the history of the ANTEANNA_FAIL or LOCKING_FAIL alarm occurrence. o

If any of these alarms are active in the LSM, follow their on-site actions.

o

If no record of the ANTEANNA_FAIL or LOCKING_FAIL alarm occurrence is found, continue with the Step 2.

2 After powering on the UMP, check if the UCCM alarm is cleared. o

If the alarm is cleared, monitor the UCCM status.

o

If the alarm remains, continue with the Step 3.

3 After replacing the UMP, check if the FUNCTION_FAIL alarm is inactivated within the standard time. The maximum time for: GPS is 15 minutes and IEEE1588v2 is 1H 15 minutes. o

If the alarm does not activate, it is decided that the UCCM is defective, and therefore leave the site.

o

If the alarm does not clear, go back to the Step 1 and repeat the process.

For information on replacement of UMP and other parts, see LTE eNB Hardware Addition and Replacement Manual.


174


A2180350R GPSR ANTENNA FAIL This alarm occurs when the antenna cable is disconnected.


MAJOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-GPSR[d]

Possible Cause This alarm issues due to one of the following reasons:



The feeding current to the antenna side is at the specified open or short level.



The antenna cable is disconnected.

Impact This alarm does not have any direct impact on the system. However, it can be the reason for the GPSR LOCKING FAIL and GPSR HOLDOVER 24H alarms.




175


Alarm Raised

Step 1


No

UMP/GPS FW Update

Yes

Step 2

Yes

Collect SW Log

GPS ANTENNA FAIL Alarm Raised? No

Restart GPS

GPS ANTENNA FAIL Alarm Raised?

No

Yes

Step 3

Collect SW Log

On Site Action

1

End


a



c


d Check whether the GPS ANTENNA_FAIL alarm has been declared. e


f

Check whether the FW_VERSION on the output window displays the latest version.

g If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

176


version, collect the SW log.

h Check whether the GPS ANTENNA_FAIL alarm has been declared. 2 Run the INIT_GPS command to restart the GPSR. 3 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support. If the GPS clock is not received due to the GPSR antenna disconnection, the internal HOLDOVER clock is used. If, however, the HOLDOVER status continues for more than 24 hours, the clock input may not be stable.



Any trace of lightning and waterlogging Y/N?

Yes

Replace GPS antennal installation materials.

No

Check voltage at the UMP GPS port end.

4.5~5.5 V?

No

Yes

Yes

Error recovered after cable replacement? No

Yes

Error recovered after splitter replacement? No

Yes

Error recovered after antenna replacement?

No

End Process

1

Replace

Check for any traces of lightning in the GPS arrestor.


177


For lightning traces, look for burnt marks of the GPS arrestor or surrounding cables. o

If any traces of lightning are found, replace UMP and GPS antenna installation materials.

o

If traces of lightning are NOT found, continue with the Step 2.

2 Separate the cable from the GPS port, and measure the voltage of the GPS port connector. Measure the voltage by touching (+) end of a Digital Voltage Meter (DVM) to the core wire and (-) end to the outside of the connector. o

If the measurement is between 4.5 to 5.5 V, continue with the Step 4.

o

If the measurement is not within this range, replace the UMP.

3 Check and replace the GPS installation materials and check if the alarm is cleared.

a

If the errors/failures have been recovered after checking the cable connection state and replacing the materials, terminate the inspection procedure. If not, continue with the following steps.

b Check the divider connection state and replace the parts. If the errors/failures have been recovered, terminate the inspection procedure. If not, continue with the following step.

c

Check the GPS antenna connection state and replace the parts if needed. When the errors/failures are recovered, terminate the inspection process.

4 After changing the UMP, check if the errors/failures are repaired. o

If the alarm does not activate, it is decided that the part is defective, and therefore leave the site.

o


If the GPS antenna and installation materials are found to be defective, the UMP is not defective. Therefore, RMA will not be processed.

For information on UMP board replacement, see LTE eNB Hardware Addition and Replacement Manual.


178


A2180360R GPSR HOLDOVER 24H This alarm occurs when the threshold time is exceeded after transition to a holdover state.


CRITICAL Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-GPSR[d]

Possible Cause 24 hours have passed since the transition to the holdover state.

Impact All cell services will be unavailable.




179


Alarm Raised

Step 1


No

UMP/GPS FW Update

Yes Yes

Collect SW Log

GPS HOLDOVER 24H Alarm Raised? No

Step 2

GPS ANTENNA FAIL, LOCKING FAIL Alarm Raised?

Yes

Actions To Clear GPS ANTENNA FAIL, LOCKING FAIL

No

RTRV-GPS-STS

Step 3

GPS HOLDOVER 24H Alarm Raised?

No

Yes

Restart GPS

Step 4


No

Yes

Collect SW Log

On Site Action

1

End


a

Set the PRC_UNIT_TYPE to UMP and LOC_TYPE to *, and then run the RTRV-PRC-FW command.


c

If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the


180


firmware. If the alarm is being raised even when firmware is the latest version, collect the SW log.

d Check whether the GPS HOLDOVER 24H alarm has been declared. e


f



h Check whether the GPS HOLDOVER 24H alarm has been declared. 2 Run the RTRV-ALM-LIST command to check the list of alarms. a

If either the GPSR ANTENNA FAIL or the GPSR LOCKING_FAIL alarm is on the list, follow the remedy.

b Run the RTRV-GPS-STS command. c

Check the LOCK_STATE and HOLDOVER_STATE.

3 If a HOLDOVER 24H alarm is being raised when there is no ANTENNA FAIL or LOCKING_FAIL alarm, run the INIT-GPS command to restart the GPSR. Check whether the GPSR alarm is being raised.

4 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support. If the GPS clock is not received due to the GPSR antenna disconnection, the internal HOLDOVER clock is used. If, however, the HOLDOVER status continues for more than 24 hours, the clock input may not be stable.



181




Yes


Reboot the UMP

Yes


Monitoring

1

Replace the UMP



o

If no record of the ANTEANNA_FAIL or LOCKING_FAIL occurrence is found, continue with the Step 2.

2 After powering on the UMP, check if the UCCM alarm is cleared. o


o




o




182


A2180361R GPSR LOCKING FAIL This alarm occurs when the normal GPS satellite signal cannot be received.






A normal GPS satellite signal is not received.



No GPS satellite tracking for one hour.

Impact This alarm does not have any direct impact on the system. However, it can be the reason for the GPSR HOLDOVER 24H alarm.




183


Alarm Raised

Step 1


No

UMP/GPS FW Update

Yes

Yes

Collect SW Log

GPS LOCKING FAIL Alarm Raised? No

Step 2


Yes

Actions To Clear GPS ANTENNA FAIL

No

RTRV-GPS-STS

Step 3

GPS LOCKING FAIL Alarm Raised?

No

Yes

Restart GPS

Step 4


No

Yes

Collect SW Log

On Site Action

1

End


a



c

If the firmware is not the latest version, run the DNLD-FW command to


184


download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest version, collect the SW log.

d Check whether the GPS LOCKING_FAIL alarm has been declared. e


f



h Check whether the GPS LOCKING_FAIL alarm has been declared. 2 Run the RTRV-ALM-LIST command to check whether the GPS ANTENNA_FAIL alarm has been raised. If it has, follow the remedy. After running the RTRV-GPS-STS command, check the LOCK_STATE, HOLDOVER_STATE and SAT_N values to determine the number of GPS satellites that are being used for tracking.

3 If a LOCKING_FAIL alarm is raised when there is no ANTENNA_ FAIL, run the INIT-GPS command to restart the GPSR. Check whether the GPSR alarm has been declared.




185



Inspect installation environment based on the GPS antenna installation guide.

Is the satellite signal improved?

Yes

No Error recovered after antenna replacement?

Yes

No

Replace the UMP

1

End process

Inspect installation environment for the GPS antenna and check if it clears the alarm. GPS antennas must be installed, securing as much open sky as possible (the horizontal field of view to be 360°, the vertical to be 160°). If the field of view is not secured sufficiently, change the location for GPS antenna installation. If the alarm is not recovered or the satellite signals are not improved, replace the UMP.

For improvement of the satellite signals, execute RTRV-GPS-STS command. There should be more than 4 (longer than 1 minute) satellites (SATNs) observed.

2 After changing the UMP, check if the alarm is cleared. o


o




186


A2180368R GPSR FUNCTION FAIL This alarm occurs when the GPSR module fails.



Possible Cause The GPSR is reset by restarting the GPSR or when the GPSR module failure occurs due to one of the following reasons:



Power failure (when the input power is 5.2 V or lower and 5.8 V or higher).



The Electronic Frequency Control (EFC) value is either +100 % or -100 %.



Deviation failure: Even sec (or 1 PPS) jumps over 100 ns.



Time is not set: GPS time is not set and it is neither active nor standby.

Impact All cell services will be unavailable




187


Alarm Raised


Step 1

No

UMP/GPS FW Update

Yes Yes

Collect SW Log

GPS FUNCTION FAIL Alarm Raised? No

Step 2

Restart GPS

Step 3

GPS FUNCTION FAIL Alarm Raised?

No

Yes

Collect SW Log

On Site Action

1

End


a



c


d Check whether the GPS FUNCTION_FAIL alarm has been declared. e


f


g If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

188



h Check whether the GPS FUNCTION_FAIL alarm has been declared. 2 If an alarm is being raised, run the INIT-GPS command to restart the GPSR. Check whether the GPSR alarm has been declared.



After entering

Reboot the UMP

No

UMP error recovered Y/N Yes

Monitoring

1

Change the UMP

Restart the UMP power and check if the FUNCTION_FAIL alarm is inactivated within the standard time. The maximum time for: GPS is 15 minutes and IEEE1588v2 is 1H 15 minutes. o

If the alarm is normally cleared off, monitor the UCCM state.

o




o




189


A2180424R GPSR FREQUENCY HOLDOVER EXCEED This alarm occurs when the threshold time (one week) is exceeded after transition to a holdover state.



Possible Cause 1 week have been passed since the transition to the holdover state.





190


Alarm Raised

Step 1


No

UMP/GPS FW Update

Yes Yes Collect SW Log

GPS FREQUENCY HOLDOVER EXCEED Alarm Raised? No

Step 2


Yes


No GPS FREQUENCY HOLDOVER EXCEED Alarm Raised?

RTRV-GPS-STS

No

Yes

Step 3

Restart GPS

Step 4

GPS FREQUENCY HOLDOVER EXCEED Alarm Raised?

No

Yes

Collect SW Log

On Site Action

1

End


a



c

If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest


191



d Check whether the GPS FREQUENCY HOLDOVER EXCEED alarm has been declared.

e


f



h Check whether the GPS FREQUENCY HOLDOVER EXCEED alarm has been declared.

2 Run the RTRV-ALM-LIST command to check the list of alarms. If either the GPSR ANTENNA FAIL or the GPSR LOCKING_FAIL alarm is on the list, follow the remedy.

a

Run the RTRV-GPS-STS command.

b Check the LOCK_STATE and HOLDOVER_STATE. 3 If a FREQUENCY HOLDOVER EXCEED alarm is being raised when there is no ANTENNA FAIL or LOCKING_FAIL alarm, run the INIT-GPS command to restart the GPSR. Check whether a GPSR alarm is being raised.




192




Yes


Reboot the UMP

Yes


Monitoring

1

Replace the UMP



o

If no record of ANTEANNA_FAIL/LOCKING_FAIL occurrence is found, continue with the Step 2.

2 After powering on UMP check if the UCCM alarm is cleared or not. o


o




o




193


A2180624R GPSR CLOCK PHASE ABNORMAL This alarm occurs when the clock phase of the GPS is drifted abnormally.



Possible Cause The clock phase of the GPS is drifted abnormally.





194


Alarm Raised

Step 1


No

UMP/GPS FW Update

Yes Yes

Collect SW Log

GPS CLOCK PHASE ABNORMAL Alarm Raised? No

Step 2


Yes


No GPS CLOCK PHASE ABNORMAL Alarm Raised?

No

Yes

RTRV-GPS-STS

Step 3

Restart GPS

Step 4

GPS CLOCK PHASE ABNORMAL Alarm Raised?

No

Yes

Collect SW Log

On Site Action

1

End


a



195


c


d Check whether the GPS CLOCK PHASE ABNORMAL alarm has been declared.

e


f



h Check whether the GPS CLOCK PHASE ABNORMAL alarm has been declared.

2 Run the RTRV-ALM-LIST command to check the list of alarms. If either the GPSR ANTENNA FAIL or the GPSR LOCKING_FAIL alarm is on the list, follow the remedy.

3 If the alarm is not cleared, check the TINT value and then run the INIT-GPS command to restart the GPSR.

a

[Run] Run the RTRV-GPS-STS command. Check the TINT value.

b Run the INIT-GPS command. Check whether the GPS CLOCK PHASE ABNORMAL alarm has been declared.




196




Yes


Reboot the UMP

Yes


Monitoring

1

Replace the UMP



o

If no record of the ANTEANNA_FAIL or LOCKING_FAIL alarm occurrence is found, continue with the Step 2.

2 After powering on UMP, check if the UCCM alarm is cleared. o


o




o




197


A2199202R SYS UDA This alarm occurs when a User-Defined Alarm (UDA) is generated.


CRITICAL/MAJOR/MINOR Hardware EQUIPMENT UDA[a]/UDA_NAME

Possible Cause A UDA is generated.

Impact The impact of this alarm depends on the user-configuration.



Alarm Raised

Collect SW Log

Step 1

System Restart

Alarm Raised?

No

Yes

Step 2

On Site Action


End

198


1

After collecting the SW log, run the INIT-SYS command to restart the system. Check whether the alarm has been raised after the system restart.

2 If the alarm remains, share the log with Samsung for the next level of maintenance support.


Enter the station

Yes

UDA Is the cable correctly connected?

Replace the UDA cable and perform re-wiring

No

1) Reconnect the UDA cable. 2) Perform re-wiring by referring to the installation instructions.

Alarm Clear?

Find out a cause for each alarm and take a corrective measure for each situation

No

Yes

No

Alarm Clear?

Yes

Alarm Clear?

Yes

No

Conclude that the UDA cable is not properly connected

Clear the situation and monitoring after history recording

1

Conclude that the UDA cable is poor.

Alarm is generated Record the details


Check if the UDA cable is properly connected to the UMP.

2 Check if the UDA cable is properly connected to each alarm device as described in the installation manual.

3 If the UDA cable is not properly connected to the UMP or the alarm devices, reconnect the cable to the UMP and the alarm devices, or re-wire the connections to the alarm devices as described in the LTE CDU Installation Manual. (check the file name)

4 Check if the UDA cable is damaged or entangled. If the UDA cable is damaged, replace the UDA cable.

5 Take the appropriate action to correct the potential cause of the alarm, and monitor the alarm status. For example, in case of a door open alarm, close the Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

199


door of the enclosure and check if the alarm is cleared.

6 Unmount and remount the UMP and check if an alarm is generated after loading completes.

7 If the alarm is cleared, record the current status and observe any reoccurrence. 8 If the alarm remains, replace the UMP. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


200


A2199209R SYS FAN FAIL This alarm occurs when the fan does not work normally.


MAJOR Hardware ENVIRONMENT RACK[a]/FAN-FAN[b]/FAN_NAME




The fan is not connected.



The actual operation speed is lower than 60% compared to the target speed (varying depending on the temperature).

Impact System cooling will be impacted due to the fan failure.




201


Alarm Raised

Step 1

TEMPERATURE HIGH Alarm Raised?

No

Yes

Check Temperature Of Each Board

Step 2

Collect SW Log

On Site Action

1

Run the RTRV-ALM-LIST command to check whether the CPU TEMPERATURE HIGH alarm has been raised due to the FAN FAIL alarm. Check whether the CPU TEMPERATURE HIGH alarm has been raised.

2 If the CPU TEMPERATURE HIGH alarm is being raised, run the RTRVPRC-STS command to check the TEMPERATURE[C] value of each UNIT_TYPE.




202


Fan fail alarm occurrence

Write down LED color & Remount Fan module

Step 1

Step 2

Contact failure between Fan module and DU

Yes

Fan fail alarm is cleared and LED green? No (RED or Off) Replaced to normal Fan module

Step 3

Fan fail alarm is cleared and LED green?

Yes

Fan module is defective

No (RED or Off) Check DU

Step 4 No (RED or Off)

Yes

As the fan module is not defective, RMA is not conducted.

1

If DU judged defective, the fan module does not go through the RMA process.

Fan fail alarm is cleared and LED green?

Finished

RMA is conducted.

After recording LED color of the fan module, remount the module. When dismounting the fan module, check if any foreign substances are found in DU or fan module. If any foreign substances are found, remount it after eliminating the foreign substance.

2 Check the LED of the fan module. o

If the LED is red or off, continue with the Step3.

o

If LED is green and the alarm is kept cleared more than 2 minutes, leave the site, judging the alarm is caused due to the contact failure between the fan module and DU.

If the alarm is found out to be caused due to the contact failure, the fan module does not go through the RMA process.

3 After replacing the fan module, check for the alarm state. o

If the alarm is cleared for more than 2 minutes, leave the site with the previously installed fan module, judging it is defective.

o


4 After checking and taking actions for the DU shelf, check for the alarm. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

203


If the alarm is cleared for more than 2 minutes, leave the site with the previously installed DU shelf, judging it defective. If the DU judged defective, the fan module does not go through the RMA process.

For information on fan replacement, see LTE eNB Hardware Addition and Replacement Manual.


204


A2199365R SYS NTP UPDATE ERROR This alarm occurs when the system time cannot be updated due to an incorrect server configuration or due to a lack of connectivity with the NTP server.


MAJOR Software EQUIPMENT None

Possible Cause The system time cannot be updated due to the incorrect server configuration or lack of connectivity with the NTP server.




205


Alarm Raised

Yes

Separate Time Server?

No

Check NTP Info

Step 1

Setting Normal?

Yes

No

Reconfigure NTP Server Info

Step 2

Alarm Cleared?

No

Yes NTP Util Test

EMS NTP Server Restart and Check System SW Util NTP Util test Success?

No

Yes

Restart SWM/FM Block

Step 3 Yes

Alarm Cleared? No

End

1

Collect SW Log, Request analysis

Step 4

If a NTP Sync server exists, check whether the setting is correct. If the information is not set or different, reconfigure the information of the server.

a

If the NTP Sync server exists, run the RTRV-NTP-CONF to check the address.

b If the server IP address and the command results are different, run the CHG-NTP-CONF command to reconfigure the address. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

206


c

Check in a few minutes to see if the alarm has been cleared.

2 If the alarm has not been cleared, login to the NE and carry out a NTP Util test to check if NTP communication is occurring with the EMS. If the util is not properly executing, check whether the ntpdate util for the EMS (or the clock sync server) NTP server and system SW is working correctly. Use the ntpdate util to check if ntp clock sync is possible. o

ntpdate2 - -i In Case of Failure ntpdate -

o

Ex> ntpdate2 -4 -i 10.1.1.11 10.1.1.10

If the ntpdate command execution fails, check whether the ntpdate util for the EMS (or the clock sync server) NTP server and NE is working correctly. Then, repeat the Step 2.

3 If ntpdate executed successfully, however, the alarm remains, check the alarm status again after restarting the SWM and FM block.

a

Restart the block by running the INIT-SW: SWM and INIT-SW: FM.

b Check whether the alarm occurs after clearance. 4 If the alarm remains, collect the SW log and share with Samsung for consulting next level of support.


207


A2199460R SYS SERVICE OFF This alarm occurs when all the cells for the eNB are disabled.


CRITICAL Software EQUIPMENT None

Possible Cause All cells for the eNB are disabled.




208


Alarm Raised

Collect SW Log

Step 1

System Locked?

Yes

System Unlock

No Yes

Step 2

All Cell Locked?

SYS SERVICE OFF Alarm Raised?

Yes

No

Cell Unlock

No

Yes

Alarm Exist?

Step 3

SYS SERVICE OFF Alarm Raised?

No

Check Remedy and Actions To Clear Alarm

Yes

No Yes

SYS SERVICE OFF Alarm Raised? No

Step 4

1

Request Analysis

End

Check whether the system admin state is set to locked, and take appropriate actions if so.

a

Run the RTRV-SYS-CONF command.

b Check whether the output value of the ADMINISTRATIVE_STATE is locked. If yes, do the following steps.

c

Change the value of ADMINISTRATIVE_STATE to unlocked, by running the CHG-SYS-CONF command.

d Check whether the SERVICE_OFF alarm has been raised by running the RTRV-ALM-LIST command.

2 Check whether the admin state of all cells is set to locked and take appropriate actions if so. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

209


a

Run the RTRV-CELL-CONF command.

b Check whether the output value of the ADMINISTRATIVE_STATE for all cells is locked. If yes, do the following steps.

c

Change the value of ADMINISTRATIVE_STATE to unlocked, by running the CHG-CELL-CONF command.

d Check whether the SERVICE_OFF alarm has been raised, by running the RTRV-ALM-LIST command.

3 If the alarm is not cleared, check which alarms are still raised and take appropriate actions.

a

Run the RTRV-ALM-LIST command.

b If an alarm is being raised, follow the remedy. 4 If the alarm remains, collect the SW log and share with Samsung for consulting next level of support.


210


A2199600R SYS MME COMMUNICATION FAIL This alarm occurs when there is a communication problem between the eNB and MME.






The eNB does not receive a response for the SCTP heartbeat from all the equipped MMEs.



The S1AP connection setup between the eNB and all the equipped MMEs has not been completed.

Impact The LTE services will be unavailable.




211


Alarm Raised

Step 2

Step 1

Check S1 Status

Yes

SCTP_STATE == disabled

No

CHECK S1 STATUS

Check SYSTEM SIG IP Step 3 No

S1 IP Exists?

ADD S1 IP

Yes

No

Yes

Step 4

Alarm Cleared?

Check MME IP Info

Step 5 No

Correct IP?

Change IP

Yes

Step 6

Alarm Cleared?

Yes

No

Check PING STATUS

Step 7 No

PING OK ?

Check Comm Status

Yes

Step 8

Alarm Cleared?

Yes

No

Collect SW Log

Request Analysis

1

End

Run the RTRV-S1-STS command to check the SCTP_STATE and S1AP_STATE. Check the SCTP_STATE and S1AP_STATE.

2 If SCTP_STATE is disabled, run the RTRV-SYS-SIGIP command and check whether SIG IP exists. Check whether the S1_PRI_IPV4_ADDR or S1_SEC_IPV4_ADDR exists. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

212


If you are using IPv6, check if S1_PRI_IPV6_ADDR or S1_SEC_IPV6_ADDR exists.

3 If S1 IP does not exist, add S1 IP. a

Run the CHG-IP-ADDR command and change the LTE_SIGNAL_S1 to True.

b Run the RTRV-SYS-SIGIP command and check whether the IP has been added.

4 Run the RTRV-MME-CONF command and check the MME IP information. Check whether the correct MME IP information is being displayed.

5 If the MME IP information is incorrect, change the IP information. a

Run the CHG-MME-CONF command to change the IP information.

b Run the RTRV-MME-CONF command to check whether the information has been updated correctly.

6 Check the ping status between the eNB-MME. Run ping -I [eNB IP] [MME IP]. Check whether the ping status is normal.

7 If the ping status is abnormal, check the communication status. a

Run the RTRV-IP-ROUTE command.

b Check the routing table of the MME IP. 8 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support. On-site Actions To analyze and resolve the alarm:

1

If the alarm remains, contact the owner of the MME.

2 If the alarm still persists, contact Samsung for the next level of maintenance support.


213


A2199602R SYS SLEEPING CELL DETECTION This alarm occurs when there is a sleeping cell.


MAJOR Software PROCESSING CELL[a]




The diagnosis call function is activated (diag_Call_Enable is set to ON).

The value of diagCallEnable can be retrieved by running the RTRV-DIAG-CONF command.



There is no RRC connection during triggering_Condition_Timer while no call is connected to the cell.

The value of triggering_Condition_Timer can be retrieved by running the RTRVDIAG-CONF command.



There is no response to the paging call transmitted by the eNB to the idle UE after triggering_Condition_Timer of PLD DIAG_CALL_CONF.


Defaults The default value of TRIGGERING_CONDITION_TIMER is 1 hour.




214


SLEEPING CELL Alarm Raised

Step 1

RECOVERY_MODE_SE LECTION == AUTO?

No

Manual RESET Carried Out by Operator

Yes

Step 2

Step 3

CELL_RELEASE

autoRecoveryMethod value?

DSP_RESET_ONLY

Step 4

RU_RESET_ONLY

Alarm Cleared?

DSP_RU_RESET

No

Yes Collect SW Log

End

1

Replace ECP, RRH

Run the RTRV-DIAG-CONF command to check the RECOVERY_MODE_SELECTION value.

Check whether the RECOVERY_MODE_SELECTION value is set to AUTO or MANUAL.

2 If the RECOVERY_MODE_SELECTION value is set to AUTO, check the AUTO_ RECOVERY_METHOD value. If RECOVERY_MODE_SELECTION is set to AUTO, check which value out of CELL_RELEASE, DSP_RESET_ONLY, RU_RESET_ONLY, or DSP_RU_RESET-the AUTO_RECOVERY_METHOD is set to. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

215


3 Check whether the alarm clears depending on the value for AUTO_ RECOVERY_METHOD. o

If AUTO_RECOVERY_METHOD is set to CELL_RELEASE, check whether the alarm clears after CELL RELEASE is completed.

o

If AUTO_RECOVERY_METHOD is set to DSP_RESET_ONLY, check whether the alarm clears after DSP RESET is completed.

o

If AUTO_RECOVERY_METHOD is set to DSP_RU_RESET, check whether the alarm clears after both the DSP and RU RESET is completed.

4 If RECOVERY_MODE_SELECTION is set to MANUAL, take the appropriate actions.

a

Run the INIT-DSP command. Set the ECP Number and DSP ID that have raised the alarm, and then run this command.

b Check whether the alarm is cleared. c

Run the INIT-SYS command.

d Check whether the alarm is cleared after the system reset. 5 If the alarm remains, collect the SW log and replace the ECP of the faulty cell. If the alarm still does not clear, replace the RRH of the faulty cell.


1

Replace ECP and RRH

2 If the alarm remains, consult the next level of maintenance with Samsung.


216


A2199605R SYS IND MME COMMUNICATION FAIL This alarm occurs when the S1 interface is in an abnormal state or the eNB cannot receive the SCTP heartbeat response from the MME.


MAJOR Software EQUIPMENT MME[e]

Possible Cause The S1 interface is in an abnormal state or the eNB cannot receive the SCTP heartbeat response from the MME.





217


Alarm Raised

Step 2

Step 1

Check S1 Status

Yes


No

CHECK S1 STATUS


S1 IP Exists?

ADD S1 IP

Yes

No

Yes

Step 4

Alarm Cleared?

Check MME IP Info

Step 5 No

Correct IP?

Change IP

Yes

Step 6

Alarm Cleared?

Yes

No

Check PING STATUS

Step 7 No

PING OK?

Check Comm Status

Yes

Step 8

Alarm Cleared?

Yes

No

Collect SW Log

Request Analysis

1

End


2 If SCTP_STATE is disabled, run the RTRV-SYS-SIGIP command and check whether SIGIP exists. Check whether S1_PRI_IPV4_ADDR or S1_SEC_IPV4_ADDR exists. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

218




Run the CHG-IP-ADDR command and change LTE_SIGNAL_S1 to True.

b Run the RTRV-SYS-SIGIP command and check whether IP has been added.

4 Run the RTRV-MME-CONF command and check the MME IP information. Check whether the correct MME IP information is being displayed.

5 If the MME IP information is incorrect, change the IP information. a



6 Check the ping status between the eNB-MME. a

Run ping -I [eNB IP] [MME IP].

b Check whether the ping status is normal. 7 If the ping status is abnormal, check the communication status. a


b Check the routing table regarding the MME IP. 8 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


1




219


A2199629R SYS MCE COMMUNICATION FAIL This alarm occurs when the eNB cannot receive the SCTP heartbeat response from the MCE.



Possible Cause The eNB cannot receive the SCTP heartbeat response from the MCE.





220


Alarm Raised

Step 1

Yes

Step 2

Check M2 Status

SCTP_STATE == SCTP_OUT_OF_SE RVICE

No

CHECK M2 STATUS


M2 IP Exists?

ADD M2 IP

Yes

No

Yes

Step 4

Alarm Cleared?

Check MCE IP Info

Step 5 No

Correct IP?

Change IP

Yes

Step 6

Alarm Cleared?

Yes

No

Check PING STATUS

Step 7 No

PING OK?

Check Comm Status

Yes

Step 8

Alarm Cleared?

Yes

No

Collect SW Log

Request Analysis

1

End

Run the RTRV-M2-STS command to check the SCTP_STATE and M2_AP_STATE. Check the SCTP_STATE and M2_AP_STATE.

2 If SCTP_STATE is set to SCTP_OUT_OF_SERVICE, run the RTRV-SYSSIGIP command and check whether SIG IP exists.

a

Run the RTRV-SYS-SIGIP command.


221


b Check whether M2_PRI_IPV4_ADDR or M2_SEC_IPV4_ADDR exists. c

If you are using IPv6, check if M2_PRI_IPV6_ADDR or M2_SEC_IPV6_ADDR exists.

3 If M2 IP does not exist, add M2 IP. a

Run the CHG-IP-ADDR command to change LTE_SIGNAL_M2 to True.


4 Run the RTRV-MBMS-MCECONF command and check the MCE IP information. Check whether the correct MCE IP information is being displayed.

5 If the MCE IP information is incorrect, change the IP information. a

Run the CHG-MBMS-MCECONF command to change the IP information.

b Run the RTRV-MBMS-MCECONF command to check whether the information has been updated correctly.

6 Check the ping status between the eNB-MCE. a

Run ping -I [eNB IP] [MCE IP].



b Check the routing table regarding the eNB/MCE IP. 8 If the alarm remains, collect the SW log, and consult the next level of maintenance with Samsung.


1




222

Chapter 3

Microcell Alarm Reference

This chapter explains the common alarms that may issue during microcell operation. A description of the alarm, its possible cause, and resolving procedures are provided.

A2100100R UMP DSP RESTART This alarm occurs when the DSP resets and restarts.


CRITICAL Software PROCESSING RACK[a]/SHELF[b]/SLOT[c]-UMP[d]/DSP[e]

Possible Cause The DSP resets and restarts (by using the DSP Reset command or replacing the DSP image).

Impact Cell services related to the UMP will be unavailable during restart.



223

Chapter 3 Microcell Alarm Reference

Alarm Raised

Step 1

FW Ver. NEW?

No

FW Update

Step 2

Yes

Yes

Collect SW Log

UMP DSP RESTART Alarm Raised? No

Step 3

INIT-DSP(UMP)

Step 4

UMP DSP RESTART Alarm Raised?

No

Yes

Step 5

INIT-SYS

UMP DSP RESTART Alarm Raised?

No

Yes

Replace Board

1

End


a

Set the LOC_TYPE to *, and then run this command.



a

After the firmware has been updated, check whether the alarm is raised.

b Run the RTRV-ALM-LIST command. c

Check whether the UMP DSP_RESTART alarm has been declared.

3 Run the INIT-DSP command to restart the DSP. Check whether the UMP DSP_RESTART alarm has been declared.

4 Run the INIT-SYS command to restart the System. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

224


a


b Check whether the UMP DSP_RESTART alarm has been declared. 5 If the alarm remains, collect the SW log and replace the faulty board.


225


A2100102R UMP PROCESS DOWN This alarm occurs when a process is deactivated.


MAJOR Software PROCESSING RACK[a]/SHELF[b]/SLOT[c]-UMP[d]/BLOCK_NAME

Possible Cause The process is deactivated. You can find the cause by analysing the core file and log file uploaded to the LSM.

Impact If an alarm is generated continuously in a specific software block, service will be unavailable.



226


Alarm Raised


Step 1

Yes



Step 2

Replace Block Image

Yes



1

Step 3

Backup LSM Log

Step 4

End

Activate the block that has raised the alarm.

a

Re-activate the disabled block by running the INIT-SW:UMP, command.


2 If the alarm keeps reoccurring, replace the block image. Backup the block image for future analysis.

a

Backup the block image that continues to deactivate. Use the DNLD-SW and UDT-SW commands to replace the block image.


227


3 If the problem cannot be solved by restarting a single block, restart the NE to repair it.

a



4 To analyse the step by step process of clearing the PROCESS_DOWN alarm, backup the LSM log. Collect the logs in /log/system/corelog & /log/system/applog for the relevant time frame. If the alarm remains, consult with Samsung for the next level of maintenance support.


228


A2100217R UMP CPU TEMPERATURE HIGH This alarm occurs when the CPU temperature exceeds the threshold.


MINOR Hardware ENVIRONMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]

Possible Cause The CPU temperature exceeded the threshold.

Impact The board will be damaged.




229


Alarm Raised

No Step 1

FW Update

FW Ver. NEW?

Step 2

Yes Yes

Collect SW Log

UMP CPU TEMPERATURE HIGH Alarm Raised? No

Step 3

Check UMP Temperature

Collect SW Log

Step 4

INIT-SYS

Step 5


No

Yes

On Site Action

1

End

Check whether the UMP firmware is the latest version by running the RTRVPRC-FW command. Check the output on whether the NAME, VERSION, and BUILD_TIME of each firmware are the most recent one.


3 Run the RTRV-PRC-STS command to check the CPU temperature. Check the value of output TEMPERATURE[C] to determine if the alarm declared condition (temperature over 97°C) has been reached.

4 After collecting the SW log, run the INIT-SYS command to restart the system.

5 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

230



1

Check the status of the PWR/ALM LED on the fan module at the front of the DU. Green indicates Normal and Red indicate fan failure.

2 If the PWR/ALM LED is green, check that the fan is rotating normally. 3 Unmount the board for which an alarm is generated and check the inside of the DU shelf to find any element or foreign material that may have blocked the air flow. If an air filter is mounted on the DU shelf, check that the air filter is in proper working condition.

4 Unmount the CPU heat sink of the UMP. Check that the thermal pad size is sufficient and that the contact between the CPU and heat sink is good.

5 Mount the UMP and check if an alarm is generated after loading completes. o

If the alarm is cleared, record the current status and observe any reoccurrence.

o

If the alarm remains, replace the UMP.

For information on Microcell replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


231


A2100300R UMP DISK FULL This alarm occurs when the disk usage exceeds the threshold.



Possible Cause The disk usage exceeded the threshold. The threshold value can be retrieved using the RTRV-ALM-THR command.





Minor: 85 %



Major: 90 %



Critical: 95 %



232


Alarm Raised

Step 1

Run RTRV-ALM-THR

No

Threshold < Default ? Yes

Run CHG-ALM-THR

Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

Step 3

Alarm Level = Minor

No

Yes



Alarm Still Raised?

No

Yes

Replace Board

1

End



233


If the DISK_FULL threshold is lower than the default value, do the following steps:

a

Set the ALARM_TYPE to DISK_FULL for the CHG-ALM-THR. Enter the default value for each threshold level.


c


2 Check this category in which the DISK_FULL alarm can occur. The DISK_FULL alarm can occur if more than one passive package exists as a result of an online upgrade. Use the RTRV-PKG-VER command to check the number of passive packages.

a


b Check whether the DISK_FULL alarm has been cleared. 3 If the alarm remains, do the following steps: o

If the DISK_FULL Alarm level is CRITICAL or MAJOR, delete the files in the LOG and TEMP folders for the UMP board.

o

If the level is MINOR, delete the files in the TEMP folder for the UMP board.

The locations of folders for the files to delete are: LOG: /var/log and TEMP: /tmp. Check whether the DISK_FULL alarm has been cleared. If the alarm remains, replace the faulty board.For information on Microcell replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


234


A2100301R UMP MEMORY FULL This alarm occurs when the memory usage exceeds the threshold.



Possible Cause The memory usage exceeded the threshold. The threshold value can be retrieved by using the RTRV-ALM-THR command.





Minor: 95 %



Major: 96 %



Critical: 97 %



235


Alarm Raised

Step 1

Run RTRV-ALM-THR

No

Threshold < Default ? Yes

Run CHG-ALM-THR

Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

Step 3

Alarm Level = Minor

No

Yes



Alarm Still Raised?

No

Yes

Replace Board

1

End



236


If the MEMORY_FULL threshold is lower than the default value, do the following steps:

a

Set the ALARM_TYPE to MEMORY_FULL for the CHG-ALM-THR. Enter the default value for each threshold level.

b If the MEMORY_FULL alarm is cleared after changing the threshold value, end the Remedy.

c

If the MEMORY_FULL alarm is not cleared after changing the threshold value, collect the SW log.

d If the threshold is set higher than the default value, collect the SW Log. 2 Check the following categories in which the MEMORY_FULL alarm can occur.

a



ii



Run the UDT-FW-BAT command to delete the FW image.

ii

Check whether the MEMORY_FULL alarm is cleared after running the UDT-FW-BAT command.

3 If the alarm remains, do the following steps: o

If the MEMORY_FULL Alarm level is CRITICAL or MAJOR, delete the files in the LOG and TEMP folders of the UMP board.

o

If the Alarm level is MINOR, delete the files in the TEMP folder of the UMP board.

The locations of folders for the files to delete are: LOG: /var/log and TEMP: /tmp. Check whether the MEMORY_FULL Alarm has been cleared.

4 If the alarm remains, replace the faulty board. For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


237


A2100302R UMP OVERLOAD This alarm occurs when the CPU usage exceeds the threshold.



Possible Cause The CPU usage exceeded the threshold. The threshold value can be retrieved by using RTRV-ALM-THR command.

Impact Some software blocks will operate abnormally. If an alarm is generated continuously, the UMP board will be reset.




Minor: 85 %



Major: 90 %



Critical: 95 %



238


Alarm Raised

Step 1


Threshold < Default ?

No

Yes


Alarm Still Raised?

No

Yes

Collect SW Log

Step 2

Check Other Items

Alarm Still Raised?

No

Yes

Step 3


No

Yes

SESSION CLOSE

Alarm Still Raised?

No

Yes

Step 4

1

Replace Board

End

Run the RTRV-ALM-THR command to check the threshold for the OVERLOAD alarm.


239


If the OVERLOAD threshold is lower than the default value, do the following steps:

a

Set the ALARM_TYPE OVERLOAD for the CHG-ALM-THR. Enter the default value for each threshold level.

b If the OVERLOAD alarm is cleared level by level after changing the threshold value, terminate the procedure. If not, collect the SW log.

c



The OVERLOAD alarm can occur if the data size is too large when executing the UPLD-CONF-FILE command. Wait until the UPLD-CONF-FILE command is completed. If the OVERLOAD alarm is cleared level by level, terminate the procedure.



ii

If the OVERLOAD alarm is cleared level by level after changing the threshold value, terminate the procedure.

3 If the alarm is critical, close all the terminals (Telnet, FTP, and dsh) that are connected to the UMP. If it is cleared, terminate the procedure.

4 If the alarm remains, replace the faulty board. For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


240


A2100305R UMP PACKET ERROR This alarm occurs when the error packets rate exceeds the threshold level.


MINOR Software EQIPMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]

Possible Cause Error packets rate exceeded the threshold level. The threshold value can be retrieved by using RTRV-PACKETERROR-CONF command.





241


Alarm Raised

Step 1

Is New F/W

No

UMP/ECP FW Update

Step 2

Yes

SW Log Collection

Step 3

Reset UMP

Step 4

Alarm Clear?

No

Yes

END

1

On Site Action

Check whether the FW is the latest version.

2 If not, update the FW to the latest version. Run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is declared even when the firmware is up to date, collect the SW log.

3 Reboot the UMP board where the alarm occurred. 4 Check whether the alarm has been cleared. If yes, wait for 10 minutes and recheck again. If not, collect the SW log and share with Samsung for the next level of maintenance support. The UMP and ECP collects all files under the /var/log folder.

On-site Actions To resolve the alarm: Replace the board. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


242


A2100351R UMP CLOCK FAIL This alarm occurs when the clock frequency deviation exceeds normal parameters.



Possible Cause The clock frequency (10 MHz, Even) of the clock module has a deviation beyond normal parameters or there is no clock.

Impact The service will be unavailable.




243


Alarm Raised

UMP FW Ver. NEW?

Step 1

No

UMP FW Update

Step 2

Yes Yes

Collect SW Log

UMP CLOCK FAIL Alarm Raised? No

Step 3

Restart system


No

Yes Retrieve Alarm List

Step 4

RTRV-CLOCKSRC-DATA

Clock Source Alarm Raised?

Yes Actions To Clear Alarm

No UMP CLOCK FAIL Alarm Raised? Yes No Step 5

No

Clock Source GPS ? Yes RTRV-GPS-STS

Step 6

GPS FW Ver. NEW?

No

GPS FW Update

Yes UMP CLOCK FAIL Alarm Raised? Yes

No

INIT-GPS

Step 7


No

Yes Step 8

Collect SW Log

Notify Samsung

1

End

Run the RTRV-PRC-FW command to check whether the UMP firmware is the latest version.


244


a



2 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest version, collect the SW log and continue with the next step.

a

Run the RTRV-ALM-LIST command. Check whether the UMP CLOCK FAIL alarm has been declared.

3 Run the INIT-SYS command to restart the system. Check whether the UMP CLOCK FAIL alarm is raised even after a system restart.

4 Run the RTRV-CLOCKSRC-DATA command to check the clock source value. Run the RTRV-ALM-LIST command to check whether an alarm related to the Clock Source exists. If so, follow the remedy. Check whether an alarm related to the clock source has been raised.

5 If the clock source is GPS, check the GPSR state by running the RTRV-GPSSTS command. Check whether the outputs LOCK_STATE and HOLDOVER_STATE are GPS_LOCKED and GPS_NOT_HOLDOVER.

6 Run the RTRV-GPS-INVT command to check whether the GPS firmware is the latest version. Check whether the FW_VERSION on the output window displays the latest version.

7 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest version, continue with the next step.

8 Run the INIT_GPS command to restart the GPSR. Check whether the UMP CLOCK FAIL alarm is raised even after a GPS reset.



245


A2100367R UMP POWER FAIL This alarm occurs when the power supply is in abnormal state.



Possible Cause Power supply is in abnormal state.

Impact The service will be unavailable.




246


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Step 2

Yes

Yes

Collect SW Log

UMP POWER FAIL Alarm Raised? No

Step 3

INIT-SYS

Step 4

UMP POWER FAIL Alarm Raised?

No

Yes

Collect SW Log

On Site Action

1

End

Run the RTRV-PRC-FW command to check whether the UMP firmware is the latest version. Check the output on whether the NAME, VERSION, and BUILD_TIME of each firmware are the most recent one.

2 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest version, collect the SW log.

3 After collecting the SW log, run the INIT-SYS command to restart the system.



1

Power-cycle the system.


247


2 If the alarm is cleared, record the current status and observe any reoccurrence. 3 If the alarm remains, replace the system. For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


248


A2100370R UMP MEMORY FAIL This alarm occurs when there are operation errors (data read/write errors) in the memory device.



Possible Cause Operation errors (data read/write) in the memory device.





249


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Step 2

Yes

Yes

Collect SW Log

UMP MEMORY FAIL Alarm Raised? No

Step 3


Step 4

UMP MEMORY FAIL Alarm Raised?

No

Yes

On Site Action

1

End

Run the RTRV-PRC-FW command to check whether the UMP firmware is the latest version.

a



2 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. If the alarm is being raised even when firmware is the latest version, collect the SW log.



b Check whether the UMP MEMORY_FAIL alarm has been declared. 4 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.

On-site Actions To resolve the problem: Replace the board.


250


For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


251


A2100372R UMP DSP FAIL This alarm occurs when there is a communication problem between the CPU and DSP.


CRITICAL Software EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]/DSP[e]




The DSP initialization is not completed.



The CPU cannot receive the keep-alive response from the DSP.



The core, modem, or the FPGA of the DSP is not operating normally.

Impact Cell services related to the DSP will be unavailable.




252


Alarm Raised

FW Ver. NEW?

Step 1

No

FW Update

Step 2

Yes

Yes

Collect SW Log

UMP DSP FAIL Alarm Raised? No

Step 3

INIT-DSP(UMP)

Step 4

UMP DSP FAIL Alarm Raised?

No

Yes

Step 5

INIT-SYS

UMP DSP FAIL Alarm Raised?

No

Yes

Replace Board

1

End


a



2 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. After the firmware has been updated, check whether the alarm is raised.

a


b Check whether the UMP DSP_FAIL alarm has been declared. 3 Run the INIT-DSP command to restart the DSP. Check whether the UMP DSP_FAIL alarm has been declared.

4 Run the INIT-SYS command to restart the system. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

253


a


b Check whether the UMP DSP_FAIL alarm has been declared. 5 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.

On-site Actions To resolve the alarm: Replace the board. For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


254


A2100380R UMP PORT DOWN This alarm occurs when the backhaul port is down.


CRITICAL Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]/PORT[e]

Possible Cause A link is down (for example, due to a bad port connection) of the backhaul port.

Impact The board cannot communicate with the LSM or external devices.




255


Alarm Raised

Step 1

UMP FW Ver. NEW?

No

UMP FW Update Reset UMP

Step 2

Yes

Step 3

No

Check ELINK Status

Port Locked?

UMP PORT_DOWN Clear?

Yes

Yes Unlock Port

No Step 4 UMP PORT_DOWN Clear?

On Site Action

1

End

Run the RTRV-PRC-FW command to check whether the firmware is the latest version. Check whether the VERSION of each firmware is the most recent one.

2 If the firmware is not the latest version, run the DNLD-FW command to download the latest version and the UDT-FW command to update the firmware. Then run the INIT-SYS command to restart the system.

3 Run the RTRV-ELINK-STS command to check whether the value of ADMINISTRATIVE_STATE is linkUnlocked.

4 If the RTRV-ELINK-STS output ADMINISTRATIVE_STATE is set to linkLocked, use the CHG-ELINK-CONF command to change STATUS to EQUIP and ADMINSTRATIVE_STATE to linkUnlocked. Then check whether the alarm has been cleared. If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


1

Check that the Ethernet cable is correctly connected and that there is no external damage.

2 Check that the optical cable is correctly connected and that there is no external damage or bending. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

256


3 Check that the connected optical cables (Single or Multi-Mode) are suitable for the installed optical module type (Single or Multi-Mode).

4 Check that the optical module is supported by the system. 5 Clean the optical module and measure its optical power. Check the measured optical power against the product specifications in the installation manual. Replace the optical module if necessary.

6 Check the status of the equipment connected to the backhaul port (for example, router and switch).

7 If the equipment connected to the backhaul port is not working properly, reset or replace the equipment.

8 Power-cycle the system. 9 If the alarm is not cleared, record the failure details to the RMA TAG and replace the system. Record the details including port connection configuration status, the part number of mounted optical module, the optical cable type, and so on. For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


257


A2100439R UMP ETHERNET HALF DUPLEX DETECTED This alarm occurs when the backhaul port status is up and duplex mode is half duplex.


MINOR Software EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-UMP[d]/PORT[e]

Possible Cause The backhaul port status is up and duplex mode is half duplex.

Impact The service will be degraded due to the high risk of packet loss.




258


Alarm Raised

Step 1

Retrieve autonego, speed, duplex Config of both eNB BH and oppsite Device

Step 2

Config mismatch?

No

Yes

Step 3

Make configure match and Down and up BH link

Step 4

Clear Alarm ?

INIT-SYS

No

Yes

END

1

On Site Action

Check the Autonego, Speed, and Duplex settings of both the eNB and the remote station's equipment. Run the RTRV-ELINK-CONF command.

The commands used on the remote stations equipment may differ depending on the manufacturer, and the following are the commands relevant to each major equipment manufacturer. - Cisco: show running-conifig {interface name} - NETGEAR: show port { | all} - 3Com: display interface [interface_type | interface_type interface_number]

2 Check whether the Autonego, Speed, and Duplex are all set to the same value. 3 If the Autonego, Speed, and Duplex settings are different from each other, set them to the same value. If the alarm has occurred despite the above parameters being set to the same value, reboot the eNB and check again if the alarm occurs. Execute the INIT-SYS command.



259


1

Check link aggregation status by disconnecting and then connecting the cable again.

2 If disconnecting and then connecting the cable does not clear the alarm, replace the cable.

3 If alarm remains, replace the board. For information on UMP replacement, see LTE eNB Hardware Addition and Replacement Manual.


260


A2148389R RU LOW GAIN This alarm occurs when the gain estimated from the measured RF output power is below the threshold.


MAJOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-RU[d]/PATH[e]

Possible Cause The RU is faulty.

Impact Cell services related to the RU will be unavailable.




261


Alarm Raised

Collect SW Log

Step 1

System Restart

Alarm Raised?

Step 2

No

Yes

On Site Action

1

End

After collecting the SW log, run the INIT-SYS command. Check whether the alarm is raised after the system restart.

2 If the alarm remains, share the SW log with Samsung for the next level of maintenance support.



262


Low gain alarm occured

Power off then Power on cyclely

Alarm cleared?

Yes

No

Replace the smallcell

Recording actions and leave the site

1

Observe the alarm reoccurrence




263


A2148391R RU OVER POWER This alarm occurs when the output power exceeds the threshold.


MAJOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-RU[d]/PATH[e]

Possible Cause The digital input power level or the RF output power level exceeded the threshold.

Impact Cell services related to the RU will be unavailable.




264


Alarm Raised

Collect SW Log

Step 1

TX PF POWER >= Alarm Threshold?

No

Change Alarm Threshold

Yes Yes

RU OVER POWER Alarm Raised? No

1

Step 2

System Restart

Step 3

On Site Action

End

After collecting the SW log, compare the values of RTRV-RU-CONF output OVER_PWR_ALARM_TH and RTRV-RU-STS output TX_RF_POWER. If the threshold value is abnormal, change the threshold to a normal level.

a

Run the RTRV-RU-CONF command to check the OVER_PWR_ALARM_TH value for the RU_ID that has raised the alarm.

b Run the RTRV-RU-STS command to check the TX_RF_POWER value for the RU_ID that has raised the alarm.

c

Run the CHG-RU-CONF command to change the OVER_PWR_ALARM _TH value, for the RU that has raised the alarm, to a normal level

d After changing the threshold, check whether the alarm is raised. 2 If the alarm is not cleared, run the INIT-SYS command. Check whether the alarm is raised after the system restart.




265




Alarm cleared?

Yes

No



1





266


A2148392R RU VSWR FAIL This alarm occurs when the VSWR measurement (return loss) is below the threshold.


MINOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-RU[d]/PATH[e]

Possible Cause The VSWR measurement (return loss) is below the threshold.





267


Alarm Raised

Collect SW Log

Step 1

Threshold Normal?

No

Change Threshold

Yes Yes

Alarm Raised? No

1

Step 2

System Restart

Step 3

On Site Action

End

After collecting the SW log, compare the values of RTRV-RU-CONF output VSWR_FAIL_ALARM_THR and RTRV-RU-STS output VSWR. If the threshold value is abnormal, change the threshold to a normal levels.

a

Run the RTRV-RU-CONF command to check the VSWR_FAIL_ALARM_THR value for the RU_ID that has raised the alarm.

b Run the RTRV-RU-STS command to check the VSWR value for the RU_ID that has raised the alarm.

c

Run the CHG-RU-CONF command to change the VSWR_FAIL_ALARM _THR value, for the RU that has raised the alarm, to a normal level





268


VSWR Fail Alarm occured

Change Antenna tilting

VSWR value changed?

Take actions after confirm influence from nearby Basestation

Yes

No ※ Connector check - Connector damage or not? - Water seepage in connector or not? - Foreign substance infiltrated in connector or not?

Power off smallcell

Yes

Disconnect Antenna cable/check the connector status/eliminate the defect-causing element

Reassemble the antenna cable

Alarm cleared?

Power on smallcell

No Swap the antenna cables connection between normal and abnormal path in smallcell

Power off smallcell

Power on smallcell

Inpsect the antenna and cable and replace them

Yes

Alarm cleared No


1


Check the VSWR value change by observing the change in the antenna tilting. If any changes are found, take actions after checking if the effect is caused by the nearby base station. If not, continue with the next step.

2 After turning SmallCell power off, check the state of the cable from the path with the error by disconnecting it from the SmallCell. Check if the cable is connected properly, damaged by moisture or foreign substances etc.

3 If moisture damage is found on the cable or connector, eliminate the moisture by using cotton swaps or dry towels. If any foreign substances are found on them, remove them. Replace the antenna cable or SmallCell if the connector is Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

269


damaged.

4 If the alarm is cleared after powering on the SmallCell, leave the site after recording the actions taken.

5 If the alarm remains even though the cable and its connection state is normal, turn the SmallCell power off.

6 After connecting a cable from the path where the alarm is not generated to the SmallCell with the SmallCell power on, check if the alarm is maintained.

7 If the alarm is cleared, reassemble the cable near the antenna or replace the cable or antenna as the alarm seems to be caused by the cable or its connection failure.

8 If the alarm is maintained after step 6, replace the corresponding SmallCell. For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


270


A2148408R RU DIGITAL INPUT LOW This alarm occurs when the digital input power level is at or below the threshold.


MINOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-RU[d]/PATH[e]/FA[f]

Possible Cause The digital input power level is at the threshold or less.





271


Alarm Raised

Collect SW Log

Step 1

TSSI <= Alarm Threshold?

No


Yes Yes

RU DIGITAL INPUT LOW Alarm Raised? No

1

Step 2

System Restart

Step 3

On Site Action

End

After collecting the SW log, compare the values of RTRV-RU-CONF output DIGITAL_INPUT_LOW_ALARM_TH and RTRV-RU-STS output TSSI_IQ_LEVEL. If the threshold value is abnormal, change the threshold to a normal level.

a

Run the RTRV-RU-CONF command to check the DIGITAL_INPUT_LOW_ALARM_TH value for the RU_ID that has raised the alarm.

b Run the RTRV-RU-STS command to check the TSSI_IQ_LEVEL value for the RU_ID that has raised the alarm.

c

Run the CHG-RU-CONF command to change the DIGITAL_INPUT_LOW_ALARM_TH value, for the RU that has raised the alarm, to a normal level




272




Alarm cleared?

Yes

No



1





273


A2148396R RU RX PATH FAIL This alarm occurs when the RSSI measurement is below the threshold.


MINOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-RU[d]/PATH[e]/FA[f]

Possible Cause The RSSI measurement is below the threshold.





274


Alarm Raised

Collect SW Log

Step 1

RSSI >= Alarm Threshold?

No


Yes Yes

RU RX PATH FAIL Alarm Raised? No

1

Step 2

System Restart

Step 3

On Site Action

End

After collecting the SW log, compare the values of RTRV-RU-CONF output RX_PATH_FAIL_TH and RTRV-RU-STS output RSSI_IQ_LEVEL. If the threshold value is abnormal, change the threshold to a normal level.

a

Run the RTRV-RU-CONF command to check the RX_PATH_FAIL_TH value for the RU_ID that has raised the alarm.

b Run the RTRV-RU-STS command to check the RSSI_IQ_LEVEL value for the RU_ID that has raised the alarm.

c

Run the CHG-RU-CONF command to change the RX_PATH_FAIL_TH value, for the RU that has raised the alarm, to a normal level





275




Yes Alarm cleared? No



1





276


A2180350R GPSR ANTENNA FAIL This alarm occurs when the antenna cable is disconnected.






The feeding current to the antenna side is at the specified open or short level.



The antenna cable is disconnected.

Impact This alarm does not have direct impact on the system. However, it can be the reason for the GPSR LOCKING FAIL and GPSR HOLDOVER 8H alarms.




277


Alarm Raised


Step 1

No

UMP/GPS FW Update

Yes Yes

Collect SW Log

Step 2

GPS ANTENNA FAIL Alarm Raised? No

Restart GPS


No

Yes

Collect SW Log

Step 3

On Site Action

1

End


a

Set the LOC_TYPE to *, and then run the RTRV-PRC-FW command.


c


d Check whether the GPSR ANTENNA FAIL alarm has been declared. e

Run the RTRV-GPS-INVT command. Check whether the FW_VERSION on the output window displays the latest versions.

f



278


g Check whether the GPSR ANTENNA FAIL alarm has been declared. 2 Run the INIT-GPS command to restart the GPSR. 3 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support. If the GPS clock is not received due to the GPSR antenna disconnection, the internal HOLDOVER clock is used. If, however, the HOLDOVER status continues for more than 24 hours, the clock input may not be stable.



Any trace of lightning and waterlogging Y/N

Yes

Replace GPS antennal installation materials.

No

Check voltage at the SmallCell GPS port end.

4.5~5.5 V?

No

Yes

Yes

Error recovered after cable replacement? No

Yes

Error recovered after splitter replacement? No

Yes


No

End Process

1

Replace

Check for any traces of lightning in the GPS arrestor.


279


For lightning traces, look for burnt marks of the GPS arrestor or surrounding cables. o

If any traces of lightning are found, replace the SmallCell and GPS antenna installation materials.

o

If traces of lightning are not found, continue with the Step 2.

2 Separate the cable from the GPS port, and measure the voltage of the GPS port connector. Measure the voltage by touching (+) end of a Digital Voltage Meter (DVM) to the core wire and (-) end to the outside of the connector. o

If the measurement is between 4.5 to 5.5 V, continue with the Step 3.

o

If the measurement is not within this range, replace the SmallCell.

3 Check and replace the GPS installation materials and check if the alarm is cleared.

a

If the errors/failures have been recovered after checking the cable connection state and replacing the materials, terminate the inspection procedure. If not, continue with the following steps.

b Check the divider connection state and replace the parts. If the errors/failures have been recovered, terminate the inspection procedure. If not, continue with the following step.

c

Check the GPS antenna connection state and replace the parts if needed. When the errors/failures are recovered, terminate the inspection process.

4 After changing the SmallCell, check if the errors or failures are repaired. o


o


If the GPS antenna and installation materials are found to be defective, the SmallCell is not defective. Therefore, RMA will not be processed.

For information on SmallCell replacement, see LTE eNB Hardware Addition and Replacement Manual.


280


A2180360R GPSR TOD MSG MISSED This alarm occurs when initialization fails due to the GPSR restart or GPSR module failure.


MAJOR Software COMMUNICATIONS RACK[a]/SHELF[b]/SLOT[c]-GPSR[d]

Possible Cause The main processor does not receive the TOD message from the GPSR.





281


Alarm Raised

Step 1


No

UMP/GPS FW Update

Yes

Yes

Collect SW Log

GPSR TOD MSG MISSED Alarm Raised? No

Step 2

UMP PROCESS DOWN (scm)Alarm Raised?

Yes

Actions To Clear UMP PROCESS DOWN (scm)

No

INIT-SW UMP scm

Step 3

GPSR TOD MSG MISSED Alarm Raised?

No

Yes

Restart GPS

Step 4


No

Yes

INIT-SYS (RESET MODE=HW)

Step 5


No

Yes

Collect SW Log

Notify Samsung

1

End

Run the RTRV-PRC-FW command to check whether the UMP firmware is the latest version. Run the RTRV-GPS-INVT command to check whether the


282


GPS firmware is the latest version.

a

Set the LOC_TYPE to * and then run the RTRV-PRC-FW command.


c


d Check whether the GPSR TOD MSG MISSED alarm has been declared. e


f



h Check whether the GPSR TOD MSG MISSED alarm has been declared. 2 Run the RTRV-ALM-LIST command to check the list of alarms and then restart the SCM block.

a

If the UMP PROCESS_DOWN (scm) alarm is on the list, follow the remedy.

b If the SCM block is currently running, set the PRC_UNIT_TYPE and SW_UNIT_NAME to UMP and SCM Image Name respectively and then run the INIT-SW command

c

Check whether the GPSR TOD MSG MISSED alarm has been declared.

3 If the alarm is being raised, run the INIT-GPS command to restart the GPSR. Check whether the GPSR TOD MSG MISSED alarm has been declared.



b Check whether the GPSR TOD MSG MISSED alarm has been declared. 5 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


283


A2180361R GPSR LOCKING FAIL This alarm occurs when the normal GPS satellite signal cannot be received.






A normal GPS satellite signal is not received.



No GPS satellite tracking for one hour.

Impact This alarm does not have any direct impact on the system. However, it can be the reason for the GPSR HOLDOVER 8H alarm.




284


Alarm Raised

Step 1


No

UMP/GPS FW Update

Yes

Yes

Collect SW Log

GPS LOCKING FAIL Alarm Raised? No

Step 2


Yes

Actions To Clear GPS ANTENNA FAIL

No

RTRV-GPS-STS

Step 3


No

Yes

Restart GPS

Step 4


No

Yes

Collect SW Log

On Site Action

1

End


a



c



285



d Check whether the GPSR LOCKING FAIL alarm has been declared. e


f


g [Check] Check whether the GPSR LOCKING FAIL alarm has been declared.

2 Run the RTRV-ALM-LIST command to check whether the GPS ANTENNA FAIL alarm has been raised. If it has, follow the remedy. After running the RTRV-GPS-STS command, check the LOCK_STATE, HOLDOVER_STATE, and SAT_N values to determine the number of GPS satellites that are being used for tracking.

3 If a LOCKING_FAIL alarm is raised when there is no ANTENNA_ FAIL, run the INIT-GPS command to restart the GPSR.

a

Run the INIT-GPS command.

b Check whether the GPSR alarm has been declared. 4 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.



286



Inspect installation environment based on the GPS antenna installation guide.

Is the satellite signal improved?

Yes

No


Yes

No

Replace the SmallCell

1

End process

Inspect installation environment for the GPS antenna and check if it clears the alarm.

a

GPS antennas must be installed, securing as much open sky as possible (the horizontal field of view to be 360°, the vertical to be 160°).  If the field of view is not secured sufficiently, change the location for GPS antenna installation.

b If the alarm is not recovered or the satellite signals are not improved, replace the SmallCell. For improvement of the satellite signals, execute RTRV-GPS-STS command. There should be more than 4 (longer than 1 minute) satellites (SATNs) observed.

2 After changing the SmallCell, check if the alarm is cleared. o


o


For information on replacement of SmallCell and other parts, see LTE eNB Hardware Addition and Replacement Manual.


287


A2180368R GPSR FUNCTION FAIL This alarm occurs when the GPSR module fails.



Possible Cause The GPSR is reset by restarting the GPSR or when the GPSR module failure occurs due to one of the following reasons:



Power failure (when the input power is 5.2 V or lower and 5.8 V or higher).



The Electronic Frequency Control (EFC) value is either +100 % or -100 %.



Deviation failure: Even sec (or 1 PPS) jumps over 100 ns.



Time not set: GPS time is not set and it is neither active nor standby.





288


Alarm Raised


Step 1

No

UMP/GPS FW Update

Yes Yes

Collect SW Log

GPS FUNCTION FAIL Alarm Raised? No

Step 2

Restart GPS

Step 3

GPS FUNCTION FAIL Alarm Raised?

No

Yes

Collect SW Log

On Site Action

1

End


a



c


d Check whether the GPSR FUNCTION FAIL alarm has been declared. e


f



289


g Check whether the GPSR FUNCTION FAIL alarm has been declared. 2 If the alarm is being raised, run the INIT-GPS command to restart the GPSR. Check whether the GPSR alarm has been declared.



After entering

Reboot the SmallCell

No

SmallCell error recovered Y/N Yes

Monitoring

1

Change the SmallCell

Restart the SmallCell power and check if the FUNCTION_FAIL alarm is inactivated within the standard time. The maximum time for: GPS is 15 minutes and IEEE1588v2 is 1H 15 minutes. o

If the alarm is cleared, monitor the UCCM state.

o


2 After replacing the SmallCell, check if the FUNCTION_FAIL alarm is inactivated within the standard time. The maximum time for: GPS is 15 minutes and IEEE1588v2 is 1H 15 minutes. o


o


For information on replacement of SmallCell and other parts, see LTE eNB Hardware Addition and Replacement Manual.


290


A2180601R GPSR HOLDOVER 8H This alarm occurs when the threshold time is exceeded after transition to a holdover state.



Possible Cause 8 hours have passed since the transition to the holdover state.





291


Alarm Raised

Step 1


No

UMP/GPS FW Update

Yes

Yes

Collect SW Log

GPS HOLDOVER 8H Alarm Raised? No

Step 2


Yes


No

RTRV-GPS-STS

Step 3


No

Yes

Restart GPS

Step 4


No

Yes

Collect SW Log

On Site Action

1

End


a



c



292



d Check whether the GPSR HOLDOVER 8H alarm has been declared. e


f


g Check whether the GPSR HOLDOVER 8H alarm has been declared. 2 Run the RTRV-ALM-LIST command to check the list of alarms. If either the GPSR ANTENNA FAIL or the GPSR LOCKING_FAIL alarm is on the list, follow the remedy.

a


b Check the LOCK_STATE and HOLDOVER_STATE. 3 If a HOLDOVER 8H alarm is being raised when there is no ANTENNA FAIL or LOCKING_FAIL alarm, run the INIT-GPS command to restart the GPSR. Check whether the GPSR alarm is being raised.




293




Yes


Reboot the SmallCell

Yes

The SmallCell error is recovered? (Y/N) No

Monitoring

1

Replace the SmallCell



o

If no record of ANTEANNA_FAIL/LOCKING_FAIL occurrence is found, continue with the Step 2.

2 After powering on the SmallCell, check if the UCCM alarm is cleared. o


o


3 After replacing the SmallCell, check if the FUNCTION_FAIL alarm is inactivated within the standard time. The maximum time for: GPS is 15 minutes and IEEE1588v2 is 1H 15 minutes. o


o


For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


294


A2180624R GPSR CLOCK PHASE ABNORMAL This alarm occurs when the clock phase of the GPS is drifted abnormally



Possible Cause The clock phase of the GPS is drifted abnormally

Impact All cell services will be unavailable




295


Alarm Raised


Step 1

No

UMP/GPS FW Update

Yes Yes

Collect SW Log

GPS CLOCK PHASE ABNORMAL Alarm Raised? No

RTRV-GPS-STS

Step 2

Restart GPS

GPS CLOCK PHASE ABNORMAL Alarm Raised?

Step 3

No

Yes

Collect SW Log

Notify Samsung

1

End


a



c


d Check whether the GPSR CLOCK PHASE ABNORMAL alarm has been declared.

e



296


f


g Check whether the GPSR CLOCK PHASE ABNORMAL alarm has been declared.

2 If the alarm is not cleared, check the TINT value, and then run the INIT-GPS command to restart the GPSR.

a


b Check the TINT value. c

Run the INIT-GPS command.

d Check whether the GPS CLOCK PHASE ABNORMAL alarm has been declared.



297


A2184001R PTPM TOD MSG MISSED This alarm occurs when the UMP does not receive the TOD message from the PTPM.


MAJOR Software COMMUNICATIONS RACK[a]/SHELF[b]/SLOT[c]-PTPM[d]

Possible Cause The main processor does not receive the TOD message from the PTPM.





298


Alarm Raised

Step 1

UMP FW Ver. NEW?

No

UMP FW Update

Yes

Yes

Collect SW Log

PTPM TOD MSG MISSED Alarm Raised? No

Step 2

UMP PROCESS DOWN (ptpm) Alarm Raised?

Yes

Actions To Clear UMP PROCESS DOWN (ptpm)

No

INIT-SW UMP ptpm

PTPM TOD MSG MISSED Alarm Raised?

No

Yes

Step 3

PTPM Alarm Raised?

Yes

Actions To Clear PTPM Alarm

No PTPM TOD MSG MISSED Alarm Raised?

No

Yes

Step 4

INIT-SYS (RESET MODE=HW)

PTPM TOD MSG MISSED Alarm Raised?

No

Yes

Step 5

Collect SW Log

On Site Action

1

End

Run the RTRV-PRC-FW command to check whether the UMP firmware is the latest version. Run the RTRV-GPS-INVT command to check whether the


299


GPS firmware is the latest version.

a



c


d Check whether the PTPM TOD MSG MISSED alarm has been declared. 2 Run the RTRV-ALM-LIST command to check the list of alarms and then restart the SCM block.

a

If the UMP PROCESS_DOWN (ptpm) alarm is on the list, follow the remedy.

b If the PTPM block is currently running, set the SW_UNIT_NAME to PTPM Image Name, and then run the INIT-SW command.

c

Check whether the PTPM TOD MSG MISSED alarm has been declared.

3 Run the RTRV-ALM-LIST command to check the list of alarms and whether PTPM alarm is on the list. If there are PTPM alarms besides the TOD MSG MISSED alarm, follow the remedy. Then check whether the TOD MSG MISSED alarm has been raised.

4 If the alarm is being raised, run the INIT-SYS command to restart the system. a


b Check whether the TOD MSG MISSED alarm has been raised. 5 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


1

Reset the UMP (or IMP) board.

2 If the alarm remains, replace the UMP (or IMP) board. For information on UMP (or IMP) board replacement, see Samsung MBS (LTE) Hardware Addition and Replacement Manual.


300


A2184003R PTPM NO CURRENT PTP MASTER This alarm occurs when the IEEE1588 clock slave device fails to collect information from the grand master clock when normal communication between the two is available.


MAJOR Hardware COMMUNICATIONS RACK[a]/SHELF[b]/SLOT[c]-PTPM[d]

Possible Cause The IEEE1588 clock slave device fails to collect information from the grand master clock when normal communication between the two is available.

Impact This will cause the IEEE1588 clock to fail.




301


Alarm Raised No

Step 1

PTPM Device State Abnormal?

Yes

Action To Clear Clock Dev Not Init Alarm

No

Change PTP Domain Number (CHG-PTPM-CONF)

No

Step 2

PTP domain number Available check?

No Current PTP Master Alarm Cleared?

Yes

Step 3

No

No

GM IP available?

Change GM IP (CHG-GM-IP)


Yes

Step 4

No

PTP Interface IP available?

No


IPAddrConf IEEE1588 attr (CHG-IP-ADDR)

Yes

Step 5

Yes

Yes

No No

PTP BH interface available? Yes

Step 6

GM & PTP Interface Ping Test Successful?

No

Check Network Status

Yes

Step 7

Collect SW Log

Step 8

PTPM Restart


Yes

No

On Site Action

1

End

Check whether the PTPM device state is normal.

a

Run the RTRV-PTPM-STS command to check the PTPM device state.

b Check whether the PTPM device state displays as running. c

If the state is not displayed as running, follow the ClockDev NotInit alarm remedy.

2 Check the PTP domain number configuration. a

Run the RTRV-PTPM-CONF command to check the PTP domain number configuration value.


302


b If the PTP domain number value is not the right value, run the CHGPTPM-CONF command to change the PTP domain number.

3 Check the IEEE 1588 Grand master server IP configuration. a

Run the RTRV-PTPM-STS command to check whether the grand master IP address is correct.

b If the grand master IP address obtained from the RTRV-PTPM-STS command is not valid, use the RTRV-GM-INFO command to check whether the MASTER_IP_1 or the MASTER_IP_2 is the Grand master IP.

c

If it is not configurable through GM-INFO, run the CHG-GM-IP command to change the Grand master IP address.

d Run the CHG-GM-INFO command to change the MASTER_IP_1 or the MASTER_IP_2 address.

e

After 30 seconds, run the RTRV-PTPM-STS command to check whether the current Grand master IP address is available.

4 Check the IEEE 1588 PTP Interface IP configuration. a

Run the RTRV-PTPM-ADDR command to check the PTP slave IP configuration.

b Run the RTRV-IP-ADDR command to check whether the IEEE 1588 attribute is correctly selected for the PTP interface.

c

Run the CHG-IP-ADDR command to select the IEEE 1588 attribute for the BH interface.

5 Check the PTP BH Interface status. Run the RTRV-ELINK-STS command to check the status of the PTP slave interface.

6 Run a ping test to check the Grand master network status. a

After connecting to the Enb, run a ping test from the Enb to the grand master IP. If there is no ping, take appropriate actions to change the network path status to normal.

b If the ping test fails, the network status must be checked first. 7 Collect the SW log and restart the PTPM. a

Run the INIT-SW command to reset the input parameter PTPM.

b Check whether the StartUpLockingFail alarm is cleared within the lock time.

8 Run the INIT-SYS command to restart the system. Run the INIT-SYS command with the input RESET_MODE set to HW. If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


303




Conduct the visual inspection of B/H state

Abnormal

Replace the cable

Normal

Abnormal

Replace the site

Reconfigure the site

Normal

Normal

Monitoring

Monitoring

Not restored Replace the SmallCell

1

Check if the backhaul cable of the SmallCell is in the fine state.

2 If the connection state of the backhaul cable is not fine, remount the backhaul cable after disconnecting it.

3 If the alarm is cleared, continue to monitor and if the alarm is maintained, replace the backhaul cable.

4 If the backhaul cable is connected normally, however, the alarm remains, replace the SmallCell. For information on SmallCell replacement, see LTE eNB Hardware Addition and Replacement Manual.


304


A2184320R PTPM NO PTP SIGNAL This alarm occurs when the SPLL state in the IEEE1588 clock device is abnormal.


MINOR Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-PTPM[d]

Possible Cause The SPLL state in the IEEE1588 clock device is abnormal.





305


Alarm Raised

Step 1

StartUpLockingFail Alarm Raised?

Yes

Action To Clear StartUp LockingFail Alarm

No


Yes

Action To Clear No Current PTP Master Alarm

No


No


No

Select IPAddrConf IEEE1588 Attr (CHG-IP-ADDR)

No

Step 2

PTPM Device State Normal? Yes

Step 3

No Current PTP Master Alarm Raised? No

Step 4

PTP Domain Number Available?

Step 5

GM IP Available? Yes

Step 6

PTP interface IP Available? Yes No PTP Signal Alarm Cleared Within Lock Time?

Yes

No

Step 7


No


Yes

Yes

Step 8

Collect SW Log

End

1

Check whether the StartUpLocking Fail alarm has been raised.

a

Check whether the StartUpLocking Fail alarm has been raised.

b Carry out the remedy for the PTPM STARTUP LOCKING FAIL alarm. c

If the StartUpLocking Fail alarm has not been raised, continue with the Step 2.


306


2 Check whether the PTPM device state is normal. a

Run the RTRV-PTPM-STS command to check the communication status with the PTPM.


If the state is not displayed as running, carry out the ClockDev NotInit alarm remedy.

3 Check whether the No Current PTP Master alarm has been raised. If the No Current PTP master alarm has been raised, follow the remedy of this alarm.






b If the grand master IP address obtained from the RTRV-PTPM-STS command is not valid, use the RTRV-GM-INFO command to check whether the MASTER_IP_1 or the MASTER_IP_2 is the grand master IP.

c



e

After 30 seconds, run the RTRV-PTPM-STS command to check whether the current Grand master IP address is available.




c


d Check whether the Holdover Exceed alarm is cleared within the lock time. 7 Run a ping test to check the grand master network status. a

After connecting to the Enb, run the ping test from the Enb to the grand master IP. If there is no ping, take appropriate actions to change the network path status to normal.

b If the ping test fails, the network status must be checked first. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

307



On-site Actions To identify and correct the problem:


Conduct the visual inspection of B/H state

Abnormal

Replace the cable

Normal

Abnormal

Replace the site

Reconfigure the site

Normal

Normal

Monitoring

Monitoring

Not restored Replace the SmallCell

1

Check if the backhaul cable of the SmallCell is in the fine state.

2 If the connection state of the backhaul cable is not fine, remount the backhaul cable after disconnecting it.

3 If the alarm is cleared, continue to monitor, and if the alarm is maintained, replace the backhaul cable.

4 If the backhaul cable is connected normally, however, the alarm remains, replace the SmallCell. For information on SmallCell replacement, see LTE eNB Hardware Addition and Replacement Manual.


308


A2184321R PTPM CLOCK DEV NOT INIT This alarm occurs when the initial state in the IEEE1588 clock device is abnormal.


CRITICAL Hardware EQUIPMENT RACK[a]/SHELF[b]/SLOT[c]-PTPM[d]

Possible Cause The initial state in the IEEE1588 clock device is abnormal.





309


Alarm Raised

Step 1

System Clock IEEE 1588 Selected?

No

Yes

Step 2

PTPM Device State Normal?

Step 3

GM IP Available?

Yes

No

No Collect SW Log

GM IP Change (CHG-GM-IP)

ClockDevNot Init Cleared?

Yes

Step 4

Yes

No

PTP interface IP Available?

No


ClockDevNot Init Cleared?

Yes

Yes

No

Collect SW Log

Step 5

System Restart

On Site Action

1

End

Check whether System Clock IEEE 1588 has been selected. Check whether IEEE 1588 has been configured for the RTRV-CLOCKSRCDATA output Clock Source.




If the state is set to running, collect the SW log.

d If the state is not set to running, continue with the Step 3. e

Carry out the remedy for the ClockDev NotInit alarm.

f

If the ClockDevNotInit alarm has not been raised, continue with the Step 2.

3 Check the IEEE 1588 grand master server IP configuration. a



310



c

If it is not configurable through GM-INFO, run the CHG-GM-IP command to change the grand master IP address.


e

After 30 seconds, run the RTRV-PTPM-STS command to check whether the current grand master IP address is available.




c


5 Collect SW log and run the INIT-SYS command to restart the System. Run the INIT-SYS command with the input RESET_MODE set to HW. If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


1

Turn on or off the SmallCell power.

2 If the defective state is not restored, replace the SmallCell. For information on SmallCell replacement, see LTE eNB Hardware Addition and Replacement Manual.


311


A2184430R PTPM STARTUP LOCKING FAIL This alarm is generated in unlocking 1588 system initialization.



Possible Cause This alarm is generated in unlocking 1588 system initialization.




312


Alarm Raised

Restart Executed?

Step 1

ClockDevNotInit Alarm Raised?

Yes


Yes

Action To Clear Clock Dev Not Init Alarm Or No Current PTP Master Action

No


No


No


No

Step 2

PTPM Device State Abnormal? Or No Current PTP Alarm Raised? No

Step 3

PTP Domain Number Available?

Step 4

GM IP Available? Yes

Step 5

PTP Interface IP Available?

Step 6

StartUpLocking Fail Alarm Cleared Within Lock Time?

Yes

No

Step 7


No


Yes

Step 8

Collect SW Log

Step 9

PTPM Restart

StartUpLocking Fail Alarm Cleared Within Lock Time?

Yes

No

On Site Action

End

During the SW restart, it is inevitably possible for the PTPM Startup Locking Fail alarm to be raised. Therefore, when running the INIT-SW command, carry out Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

313


corrective actions after the lock time.

1

Check whether the ClockDevNotInit alarm has been raised.

a

Check whether the ClockDevNotInit alarm has been raised.

b Carry out the remedy for the ClockDevNotInit alarm. c

If the ClockDevNotInit alarm has not been raised, continue with the Step 2.





3 Check whether the No Current PTP Master alarm has been raised. If yes, follow the remedy of this alarm.




5 Check the IEEE 1588 grand master server IP configuration. a


b If the grand master IP address obtained from the RTRV-PTPM-STS command is not valid, use the RTRV-GM-INFO command to check whether the MASTER_IP_1 or the MASTER_IP_2 is the grand master IP.

c



e





c


d Check whether the Startup Locking Fail alarm is cleared within the lock time. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

314


7 Run a ping test to check the Grand master network status. a

After connecting to the eNB, run the ping test from the eNB to the Grand Master IP. If there is no ping, take appropriate actions to change the Network Path status to normal.

b If the ping test fails, the network status must be checked first. 8 Collect the SW log and reset the PTPM. a


b Check whether the Startup Locking Fail alarm is cleared within the lock time.

9 Run the INIT-SYS command to restart the System. Run the INIT-SYS command with the input RESET_MODE set to HW.Because the IEE 1588 network status and quality measurements differ per equipment and operator requirement, the network quality measurement is to be carried out after a discussion.

The IEEE 1588 PTPM Lock Time is to comply with operator requirement.


315


A2184438R PTPM HOLDOVER EXCEED This alarm occurs when the threshold time exceeds after transition to a holdover state.



Possible Cause The threshold time is exceeded after transition to a holdover state.




316


Alarm Raised

Step 1

StartUpLockingFail Alarm Raised?

Yes

Action To Clear StartUp LockingFail Alarm

No


No

Step 2


Step 3


No Current PTP Master Alarm action

Yes

Step 4

PTP Domain Number Available Check?

Step 5

GM IP Available ?

No


No


No


Yes

Step 6

PTP Interface IP Available?

HOLDOVER EXCEED Alarm Cleared Within Lock Time?

Yes

No

Step 7


No


Yes

Step 8

Collect SW Log

PTPM Restart

HOLDOVER EXCEED Alarm Cleared Within Lock Time?

Yes

No

Step 9

On Site Action

1

End

Check whether the Startup Locking Fail alarm has been raised.

a

Check whether the Startup Locking Fail alarm has been raised.


317


b Carry out the remedy for the Startup Locking Fail alarm. c

If the Startup Locking Fail alarm has not been raised, continue with the Step 2.


Run the RTRV-PTPM-STS command to check the communication status with the PTPM.

b Check whether the PTPM status displays as running. c


3 Check whether the No Current PTP Master alarm has been raised. If the No Current PTP master alarm has been raised, follow the remedy of this alarm.







c

If it is not configurable through GM-INFO, run the CHG-GM-IP command to change the grand master IP address.


e





c


d Check whether the Holdover Exceed alarm is cleared within the lock time. 7 Run a ping test to check the grand master network status. a

After connecting to the eNB, run the ping test from the eNB to the grand


318


Master IP. If there is no ping, take appropriate actions to change the Network Path status to normal.

b If the ping test fails, the network status must be checked first. 8 Collect the SW log and restart the PTPM. a


b Check whether the Holdover Exceed alarm is cleared within the lock time. 9 Run the INIT-SYS command to restart the system. Run the INIT-SYS command with the input RESET_MODE set to HW. Because the IEE 1588 network status and quality measurements differ per equipment and operator requirement, the network quality measurement is to be carried out after a discussion.

The IEEE 1588 PTPM Lock Time is to comply with operator requirement.


319


A2199216R SYS TEMPERATURE HIGH This alarm occurs when the temperature of the unit is higher than the high threshold (outdoor only).


MAJOR Hardware ENVIRONMENT None

Possible Cause The temperature of the unit is higher than the high threshold.

Impact Service will be unavailable.




320


Alarm Raised

No

Step 1

Alarm Threshold Abnormal && Env Temp >= Alarm Threshold Yes

Change Threshold

SYS TEMPERATURE HIGH Alarm Raised?

Step 2

No

Yes

Collect SW Log

System Restart

SYS TEMPERATURE HIGH Alarm Raised?

Step 3

No

Yes

On Site Action

1

End

Check the temperature threshold and if there is a problem, take appropriate action.

a

Run the RTRV-ENV-TEMP command.

b Run the RTRV-ENVTEMP-THR command. c

If the environment temperature threshold is abnormal, check the recommended threshold level and change the threshold to this value.

2 If the alarm is not cleared, collect the SW log and restart the system. a


b Run the RTRV-ALM-LIST command and check whether an alarm exists with values of SYS and TEMPERATURE HIGH for outputs UNIT_TYPE and ALARM_TYPE.

3 If the alarm remains, share the SW log with Samsung for the next level of maintenance support.


321



SYS Temperature High Alarm Occurs

Step 1

Check LED Color

LED Green Y/N

Yes

No

Step 2

Conduct Visual Check for Foreign Substances near Unit

Foreign Substances/ Hampering Elements Y/N

No

Yes

Step 3

Yes

Eliminate Foreign Substances/ Elements

Alarm Cleared Y/N No

Step 4

No

Replace L7MU

Alarm Cleared Y/N Yes


1

At the site, check if the alarm is still active in the LSM. Then, check the LED color.

a

If the alarm is activated and the LED color is green, continue with the Step 4.

b If the LED is not green, continue with the Step 2. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

322


2 Check if there are any foreign substances hampering heat radiation near the Microcell unit.

a

If foreign substances or hampering elements are found, continue with the Step 3.

b If the alarm continues to be activated without the substances hampering heat radiation, continue with the Step 4.

3 Eliminate all of the foreign substances and hampering elements near the Microcell unit. o


o


4 Replace the Microcell. After recording action history, continue to monitor the alarm state. For information on system replacement, see Samsung MBS (LTE) Outdoor Microcell Installation Manual.


323


A2199365R SYS NTP UPDATE ERROR This alarm occurs when the system time cannot be updated either due to an incorrect server configuration or lack of connectivity with the NTP server.



Possible Cause The system time cannot be updated due to an incorrect server configuration or to a lack of connectivity with the NTP server.




324


Alarm Raised

Yes

Separate Time Server?

No

Check NTP Info

Step 1

Setting Normal?

Yes

No Reconfigure NTP Server Info

Step 2

Alarm Cleared?

No

Yes NTP Util Test

EMS NTP Server Restart and Check System SW Util

NTP Util test Success?

No

Yes

Restart SWM/FM Block

Yes

Alarm Cleared?

Step 3

No

Collect SW Log, Request Analysis

End

1

Step 4

If a NTP Sync server exists, check whether the information setting is correct. If the information is not set or set with different information, reconfigure the info to the NTP server.

a

If the NTP Sync server exists, run the RTRV-NTP-CONF to check the


325


server address.

b If the NTP Sync server IP address and the command results are different, run the CHG-NTP-CONF command to reconfigure the address.

c

Check in a few minutes to see if the alarm has been cleared.

2 If the alarm has not been cleared, login to the NE and carry out a NTP Util test to check if NTP communication is occurring with the EMS. If the util is not properly executing, check whether the ntpdate util for the EMS (or the clock sync server) NTP server and System SW is working correctly. Use the ntpdate util to check if ntp clock sync is possible. o

ntpdate2 - -i In Case of Failure

o

ntpdate -

o

Ex> ntpdate2 -4 -i 10.1.1.11 10.1.1.10

If the ntpdate command execution fails, check whether the ntpdate util for the EMS (or the clock sync server) NTP server and NE is working correctly. Then repeat the Step 2.

3 If ntpdate executed successfully but the alarm was not cleared, check the alarm status again after restarting the SWM and FM block.

a

Restart the block by running INIT-SW: SWM and INIT-SW: FM.

b Check whether the alarm remains after clearance. 4 If the alarm remains, collect the SW log and share with Samsung for consulting the next level of maintenance support.


326


A2199460R SYS SERVICE OFF This alarm occurs when all the cells for the eNB are disabled.



Possible Cause All cells for the eNB are disabled.




327


Alarm Raised

Collect SW Log

Step 1

System Locked?

Yes

System Unlock

No Yes

Step 2

All Cell Locked?

SYS SERVICE OFF Alarm Raised ?

Yes

No

Cell Unlock

No

Yes

Alarm Raised?

Step 3

SYS SERVICE OFF Alarm Raised ?

No

Check Remedy and Actions To Take for Each Alarm

Yes

No Yes

SYS SERVICE OFF Alarm Raised ? No

Step 4

1

Request Analysis

End

Check whether the system admin state is set to locked, and take appropriate actions if so.

a

Run the RTRV-SYS-CONF command.

b Check whether the value of output ADMINISTRATIVE_STATE is locked. If yes, do the following steps: i

Change the value of ADMINISTRATIVE_STATE to unlocked by running the CHG-SYS-CONF command.

ii

Check whether the SERVICE_OFF alarm has been raised by running the RTRV-ALM-LIST command.

2 Check whether the admin state of all cells is set to locked and take appropriate actions if so. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

328


a

Run the RTRV-CELL-CONF command.

b Check whether the value of output ADMINISTRATIVE_STATE for all cells is locked. If yes, do the following steps: i

Change the value of ADMINISTRATIVE_STATE to unlocked by running the CHG-CELL-CONF command.

ii

Check whether the SERVICE_OFF alarm has been raised by running the RTRV-ALM-LIST command.

3 If the alarm is not cleared, check which alarms are still raised and take appropriate actions.

a


b If an alarm is being raised, follow the remedy.  Check if an alarm is generated in the ECP, DSP, or RF units.  If an alarm is generated in the ECP, take corrective measures specific to the ECP.  If an alarm is generated in the clock module (PTPM or GPSR), take a corrective measures specific to the clock module (PTPM or GPSR).  If an alarm is generated in the DSP, take corrective measures specific to the DSP.  If an alarm is generated in the RF unit, take corrective measures specific to the RF unit. If the alarm remains, collect the SW log and share with Samsung for consulting the next level of maintenance support.


329


A2199600R SYS MME COMMUNICATION FAIL This alarm occurs when there is a communication problem between the eNB and MME.






The eNB does not receive a response for the SCTP heartbeat from all the equipped MMEs.



The S1AP connection setup between the eNB and all the equipped MMEs has not been completed.

Impact The LTE services will be unavailable.




330


Alarm Raised

Step 2

Step 1

Check S1 Status

Yes


No

CHECK S1 STATUS


S1 IP is exist ?

ADD S1 IP

Alarm Cleared? No

Yes

Step 4

Yes

Check MME IP Info

Step 5 No

IP is correct ?

Change IP

Alarm Cleared?

Yes

Step 6

Yes

No

Check PING STATUS

Step 7 No

PING OK ?

Check Comm Status

Alarm Cleared?

Yes

Step 8

Yes

No

Collect SW Log

Request Analysis

1

End

Run the RTRV-S1-STS command to check the SCTP_STATE and S1AP_STATE.

a

Run the RTRV-S1-STS command.

b Check the SCTP_STATE and S1AP_STATE. 2 If SCTP_STATE is disabled, run the RTRV-SYS-SIGIP command and Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

331


check whether SIG IP exists.

a

Run the RTRV-SYS-SIGIP command.

b Check whether S1_PRI_IPV4_ADDR or S1_SEC_IPV4_ADDR exists. If you are using IPv6, check if S1_PRI_IPV6_ADDR or S1_SEC_IPV6_ADDR exists.




4 Run the RTRV-MME-CONF command and check the MME IP information. a

Run the RTRV-MME-CONF command.

b Check whether the correct MME IP information is being displayed. 5 If the MME IP information is incorrect, change the IP information. a







b Check the routing table regarding the MME/MCE IP. 8 If the alarm remains, collect the SW log and share with Samsung for the next level of maintenance support.


1




332


A2199602R SYS SLEEPING CELL DETECTION This alarm occurs when there is a sleeping cell.


MAJOR Software PROCESSING CELL[a]




The diagnosis call function is activated (diag_Call_Enable is set to ON).

The value of diagCallEnable can be retrieved by running the RTRV-DIAG-CONF command.



There is no RRC connection during triggering_Condition_Timer while no call is connected to the cell.

The value of triggering_Condition_Timer can be retrieved by running the RTRVDIAG-CONF command.



There is no response to the paging call transmitted by the eNB to the idle UE after triggering_Condition_Timer of PLD DIAG_CALL_CONF.


Defaults The default value of TRIGGERING_CONDITION_TIMER is 1 hour.




333


SLEEPING CELL Alarm Raised

RECOVERY_MODE_SE LECTION == AUTO?

Step 1

No

Manual RESET Carried Out by Operator

Yes autoRecoveryMethod value?

Step 2

DSP_RESET_ ONLY

CELL_RELEASE

Step 3

Alarm Cleared?

Step 4

No

Yes Collect SW Log

End

1

Replace Board

Run the RTRV-DIAG-CONF command to check the RECOVERY_MODE_SELECTION value.

Check whether the RECOVERY_MODE_SELECTION value is set to AUTO or MANUAL.

2 If the RECOVERY_MODE_SELECTION value is set to AUTO, check the AUTO_RECOVERY_METHOD value. If RECOVERY_MODE_SELECTION is set to AUTO, check which value-out of CELL_RELEASE and DSP_RESET_ONLY-the AUTO_RECOVERY_METHOD is set to.

3 Check whether the alarm clears depending on the value for AUTO_ Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

334


RECOVERY_METHOD. o

If AUTO_RECOVERY_METHOD is set to CELL_RELEASE, check whether the alarm clears after CELL RELEASE is completed.

o

If AUTO_RECOVERY_METHOD is set to DSP_RESET_ONLY, check whether the alarm clears after DSP RESET is completed.

4 If RECOVERY_MODE_SELECTION is set to MANUAL, take the appropriate actions.

a

Run the INIT-DSP command. Set the DSP ID that has raised the alarm, and then run this command..

b Check whether the alarm is cleared. c


d Check whether the alarm is cleared after the system restart. 5 If the alarm remains, collect the SW log, and replace the faulty board. On-site Actions To analyze and resolve the alarm:

1

Replace the board.

2

If the alarm remains, consult with Samsung for the next level of maintenance support.


335


A2199605R SYS IND MME COMMUNICATION FAIL This alarm occurs when the S1 interface is in an abnormal state or the eNB cannot receive the SCTP heartbeat response from the MME.


MAJOR Software EQUIPMENT MME[e]

Possible Cause The S1 interface is in an abnormal state or the eNB cannot receive the SCTP heartbeat response from the MME.





336


Alarm Raised

Step 2

Step 1

Check S1 Status

Yes


No

CHECK S1 STATUS


S1 IP Exists?

ADD S1 IP

Yes

No

Yes

Step 4

Alarm Cleared?

Check MME IP Info

Step 5 No

Correct IP?

Change IP

Yes

Step 6

Alarm Cleared?

Yes

No

Check PING STATUS

Step 7 No

PING OK?

Check Comm Status

Yes

Step 8

Alarm Cleared?

Yes

No

Collect SW Log

Request Analysis

1

End


2 If SCTP_STATE is disabled, run the RTRV-SYS-SIGIP command and check whether SIG IP exists. Check whether S1_PRI_IPV4_ADDR or S1_SEC_IPV4_ADDR exists. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

337






4 Run the RTRV-MME-CONF command and check the MME IP information. a

Run the RTRV-MME-CONF command.

b Check whether the correct MME IP information is being displayed. 5 If the MME IP information is incorrect, change the IP information. a









1


2 If the alarm still persists, consult with Samsung for the next level of maintenance support.


338


A2199629R SYS MCE COMMUNICATION FAIL This alarm occurs when the eNB cannot receive the SCTP heartbeat response from the MCE.



Possible Cause The eNB cannot receive the SCTP heartbeat response from the MCE.





339


Alarm Raised

Step 2

Step 1

Check M2 Status

Yes

SCTP_STATE == SCTP_OUT_OF_ SERVICE

No

CHECK M2 STATUS


S1 IP Exists?

ADD S1 IP

Yes

No

Yes

Step 4

Alarm Cleared?

Check MCE IP Info

Step 5 No

Correct IP?

Change IP

Yes

Step 6

Alarm Cleared?

Yes

No

Check PING STATUS

Step 7 No

PING OK?

Check Comm Status

Yes

Step 8

Alarm Cleared?

Yes

No

Collect SW Log

Request Analysis

1

End

Run the RTRV-M2-STS command to check the SCTP_STATE and M2_AP_STATE. Check the SCTP_STATE and M2_AP_STATE.

2 If SCTP_STATE is set to SCTP_OUT_OF_SERVICE, run the RTRV-SYSSIGIP command and check whether SIG IP exists. Check whether S1_PRI_IPV4_ADDR or S1_SEC_IPV4_ADDR exists. Samsung LTE eNB Alarm Manual for PKG 5.0.0 v1.0 © Samsung Proprietary and Confidential

340




Run the CHG-IP-ADDR command to change LTE_SIGNAL_S1 to True.


4 Run the RTRV-MBMS-MCECONF command and check the MCE IP information. Check whether the correct MCE IP information is being displayed.

5 If the MCE IP information is incorrect, change the IP information. a

Run the CHG-MBMS-MCECONF command to change the IP information.

b Run the RTRV-MBMS-MCECONF command to check whether the information has been updated correctly.

6 Check the ping status between the eNB-MCE. a

Run ping -I [eNB IP] [MCE IP].





1




341

Appendix Acronyms CMC CPU CLI EMS FM GUI IMM LTE LSM MMP NE NMS NTP QoS SCTP SWM

Chassis Management Controller Central Processing Unit Command Line Interface Element management system Fault Management Graphic User Interface Integrated Management Module Long Term Evolution LTE System Manager MCE Main Processor Network Element Network Management System Network Time Protocol Quality of Service Stream Control Transmission Protocol Software Management


342

Samsung LTE eNB Alarm Manual for PKG 5.0.0 Document Version 1.0 © 2015 Samsung Electronics Co., Ltd. All rights reserved.

Samsung LTE ENB Alarm Manual for PKG 5.0.0_v1.0

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