Servicemanual Mettler Toledo XS Analytical Balances: Chapte r

Address

Mettler-Toledo GmbH, Laboratory & Weighing Technologies Marketing Support LabTec Postfach LabTec CH-8606 Greifensee, Schweiz

Phone

+41-1-944 36 36

Fax

+41-1-944 31 90

Internet

http://www.mt.com

Servicemanual METTLER TOLEDO XS Analytical Balances Edition 03/2004

Overview of Chapters

Chapte r

Overview of Chapters 1

Introduction Using the Service Manual, Designation Concept

7

LARS Testing and adjusting the balances with LARS, TDNR lists

2

Safety Hazard warnings

8

Adjusting in the Service Menu Adjustment possibilities without without LARS, adjustment of certified balances

3

Spare Parts Exploded-view drawings and spareparts lists, packaging

9

Adjustment Data Tables of adjustment tolerances and technical data of the balances

4

Checks Routine checks after maintenance, repairs, and adjustment

10

Accessories Spare parts for accessories and technical data of the balances

5

Troubleshooting Problems, causes, and remedies

11

Service Aids Software, interfaces, gages, tools

6

Repairs Instructions for repairs

12

Document History All editions, from first to most recent

Introduction

1

Chapter

Chapter 1

Introduction List of contents 1

Service Manual . . . . . . . . . . . . . . . . . . . 11-2

2

Designation Concept . . . . . . . . . . . . . . 1-9

1.1 1.1

Purp Purpos ose e of of th the Se Service vice Manu anual . . . . . . . . . . . . . . . 1-2 1-2

2.1 2.1

Mod Model Plat Plate e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 1-9

1.2 1.2

Prev Previo ious us Know Knowle ledg dge e Req Requi uire red. d. . . . . . . . . . . . . . . . 1-2 1-2

2.2 2.2

Type Type plate late . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1.3 1.3 1.3.1 1.3.1 1.3. 1.3.2 2

Stru Struct ctur ure e of of the the Serv Servic ice e Man Manua ual. l. . . . . . . . . . . . . . . 1-2 1-2 Tables Tables of Cont Content ents s / Index. Index. . . . . . . . . . . . . . . . . . . . . 1-2 1-2 Page Page Stru Struct ctur ure. e. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1-3

2.3 2.3

Serv Servic ice e Dat Data a Pla Plate. te. . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1-10

1.4 1.4 1.4.1 1.4.2 1.4. 1.4.3 3 1.4.4 1.4.4

Navi Naviga gati ting ng in the the Scr Scree een. n. . . . . . . . . . . . . . . . . . . . . 1-3 1-3 Adobe Acrobat Reader Reader ® . . . . . . . . . . . . . . . . . . . . . . 1-4 Navigation with Adobe Acrobat Reader ® . . . . . . . . . 1-5 Displ Display ay on a Sma Small ll Scr Scree een n . . . . . . . . . . . . . . . . . . . . 1-6 1-6 Naviga Navigatio tion n withi within n the the Manua Manual. l. . . . . . . . . . . . . . . . . . . 1-7 1-7

2.4 2.4 2.4.1 2.4. 2.4.2 2

Desi Design gnat atio ion n def defin init itio ion n . . . . . . . . . . . . . . . . . . . . . 1-10 1-10 Weighbrid Weighbridge ge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 Term Termin inal al . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 1-10

3

Overview: Weighbridges, Weighing cell, Terminal . . . . . . . . . . . 1-11

1.5 1.5

Pape Paperr Pri Print ntou outt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 1-8

3.1 3.1

Weig Weighb hbri ridg dge e - Wei Weigh ghin ing g cell cell . . . . . . . . . . . . . . . . 1-11 1-11

3.2

Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Introduction

1

Chapter

Chapter 1

Service Manual 1.1

Purpose of the Service Manual

1.3

Structure of the Service Manual

The Service Manual provides support to service personnel of Mettler-Toledo, or other persons authorized by Mettler-Toledo, when performing maintenance and repairs on the balances described in this Service Manual.

The Service Manual is divided into 12 chapters.

1.2

The Service Manual is designed mainly for display on a desktop or laptop computer screen.

Previous Knowledge Required

Persons using the Service Manual must fulfill the following basic knowledge requirements regarding the handling of MettlerToledo products and associated software: • Understanding of the Operating Instructions of the respective balance (siehe CD LabTec serviceexpert oder http://extranet.mt.com LabTec Market Support). • Experience with LARS (LabTec Repair and Service Software). • Ability to load new software onto the balance from the Internet using LARS or e-loader (siehe CD LabTec serviceexpert oder http://extranet.mt.com LabTec Market Support). • Basic knowledge of using Adobe Acrobat Readerr ® Mettler-Toledo offers service courses which include this basic knowledge.

The sequence of the chapters largely corresponds to the sequence of the operations for repairing a balance: checking, troubleshooting, repair, and adjustment.

1.3.1

Tables of Contents / Index

For rapid location of the required information, the Service Manual has: • an overview of the chapters • an index • a table of contents for each chapter. Instructions for using the tables of contents and the index are given in Section 1.4.4 of this chapter.

Introduction

1.3.2

Chapter

Chapter 1

Page Structure A

B

C

Header A B C

Title of the respective chapter Icon for the respective chapter Chapter number

Text field Information containing text and illustrations Footer D E F

D

1.4

E

F

Navigating in the Screen

For navigation in the Service Manual either the functions of Adobe Acrobat Reader ® or hyperlinks located in the document can be used. The two means of navigation can also be used together.

Number of the Service Manual Issue date (month/year) Page number «6-7» 6 = chapter number 7 = page number within this chapter

Introduction

1.4.1

Chapter

Chapter 1

® Adobe Acrobat Reader

To be able to navigate with Adobe Acrobat Reader ® you need to know the basic functions of this software. To teach yourself the functions of Adobe Acrobat Reader ® : 1.

Start the software

2. 3.

In the menu bar, click on Help Select Acrobat Help

4.

In the help tree, click on Learn Adobe Acrobat.

Introduction

1.4.2

Chapter

® Navigation with Adobe Acrobat Reader

C

B

Chapter 1

A

E

D E F G

The most important functions of the Adobe Acrobat Reader ® toolbar for navigation in the Service Manual are the following: A

Open/close the navigation window B

C

Zoom

D

Page forward/backward

E

Go to start/end of document

F

Go to Previous View (e.g. return to the page with the "link origin")

G

Go to Next View (e.g. from the page with the "link origin" back to the "linked page")

Introduction

1.4.3

Chapter

Chapter 1

Display on a Small Screen To enable use of a small screen, it can be switched to fullscreen mode. The Service Manual is then displayed without the toolbar. A

The key combinations required for navigation in fullscreen mode are as follows: Ctrl+L

Switch to full-screen

Esc

Reset to normal view

Ctrl++

Zoom in

Ctrl+-

Zoom out



Page forward/backward

Alt+

Return to selected hyperlink A

Introduction

1.4.4

Chapter

Chapter 1

Navigation within the Manual A

A

B E

The Service Manual contains hyperlinks which make direct navigation possible. They can also be used when navigating with the toolbar of Adobe Acrobat Reader ® (see Section 1.4.2).

E Click on A The table of contents of the respective chapter is displayed. Click on B The Overview of Chapters is displayed. Click on C The respective section in the chapter is displayed. Click on D The table of contents of the respective chapter is displayed.

C

Click on E The respective cross-reference in this, or another, chapter is displayed. For clarity, the many links of this type are shown blue.

D

Introduction

1.5

Chapter

Paper Printout

A paper printout of the Service Manual can be created with Adobe Acrobat Reader ®. The printout in landscape orientation can be on either US Letter or DIN A4 paper size. If scaling of 85% is selected, the margin is sufficiently wide for punching. To set scaling in Adobe Acrobat Reader(r): File/Print/Properties/Layout/Advanced/Graphics/Scaling.

Chapter 1

Introduction

2

Chapter

Chapter 1

Designation Concept 2.1

Model Plate A Marketing designation B Maximum capacity C Readability

A B C 2710

2.2

Type plate 1

2705

A B 2

2707

Fig. 1: Type plate of weighbridge Fig. 2: Type plate of terminal A Serial number (SNR) B Type definition number (TDNR) of balance/terminal when leaving the factory

A

Note

B

If a new TDNR is loaded when servicing is performed, the new number must be entered on the service data plate (weighbridge and/or terminal) (see Section 2.3).

Introduction

2.3

Chapter

Chapter 1

Service Data Plate A 2

1

B

C

Fig. 1: Service data plate of weighbridge The service data plate is located on the inner righthand side of the casing. Fig. 2: Service data plate of terminal The service data plate is located on the inside of the terminal. A Column for new TDNR B Column for new software version

2699 1864

C Column for date of update Service Data Plate see Chapter 11

2.4

Designation definition

2.4.1

Weighbridge

2.4.2

XS204DR/A

Terminal PPT

Certified Balance DeltaRange Capacity/Readability Type

Terminal Balance Type Capacity/Readability

Introduction

3

Chapter

Overview: Weighbridges, Weighing cell, Terminal 3.1

Weighbridge - Weighing cell

Weighbridge

Matching Weighing cell Part No. 11106811

XS64B XS104B XS105BDU XS204B XS204BDR XS205BDU

Spare parts: see Section 2, Chapter 3


Chapter 1

Introduction

3.2

Chapter

Terminal

Type SAT


Chapter 1

Safety

2

Chapter

Safety List of contents 1

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

1.1

Before starting service work . . . . . . . . . . . . . . . . . 2-2

1.2

Pictograms used in this manual . . . . . . . . . . . . . . 2-2

1.3

Text markers used. . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

1.4

Disposal of service materials and replaced parts 2-3

1.5

State of the art . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Chapter 2

Safety

1

Chapter

Chapter 2

Safety 1.1

Before st starting se service wo work

1.2

Pictograms used in this manual

• Obtain Obtain written written confir confirmation mation that the the balance balance is not not contamina contaminatted, or that it has been expertly cleaned before service work is started.

General warning

• Obtain Obtain this confirmati confirmation on in advan advance ce through through your service service orgaorganization.

Warning of an electric voltage

• Read the Operati Operating ng Instruc Instructions tions to familiari familiarize ze yourse yourself lf with with the functions of the balance.

Electrostatically damageable components

• Observe Observe all all safety safety instructio instructions ns in this Service Service Manua Manual. l. • Observe Observe any any safety safety instru instruction ctions s received received from the the customer. customer. Be specially sure to observe safety instructions which are closely related to your service work.

Fire hazard

1.3

Text markers used

Warning, Note

Important information regarding handling

Safety

Chapter

1.4

Disposal sal of serv ervice mater ateriials and replaced parts

Service materials (cleaning cloths, cleaning agents, etc.) and replaced parts must be disposed of: • in accord accordance ance with the specific specific customer's customer's regulation regulations s • in accorda accordance nce with the speci specific fic regulat regulations ions of the the respecrespective country.

1.5

State of the art

This Service Manual corresponds to the state of the art at the date of issue (e.g. 03/2004).

Chapter 2

Spare Parts

3

Chapter

Chapter 3

Spare Parts List of contents 1

Terminal (SAT) . . . . . . . . . . . . . . . . . . . . 33-2

2

Draft sh shield, Ho Housing, We Weighing pa pan. . 3-3

3

Carriyng handle, Electronics, Front cover. cover . . . . . . . . . . . . . . . . . . . . . . . 3-4

4

Cantilever arm . . . . . . . . . . . . . . . . . . . . 33-5

5

Weighing cell . . . . . . . . . . . . . . . . . . . . . 33-6

5.1 5.1

Over Overvi view ew.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 3-6

5.2 5.2

Guid Guide e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

5.3 5.3

Lever. ever. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 3-8

5.4 5.4

Weig Weighi hing ng cell cell supp suppor ortt . . . . . . . . . . . . . . . . . . . . . . . 3-9 3-9

6

Chassis . . . . . . . . . . . . . . . . . . . . . . . . 3-10

6.1 6.1

Chas Chassi sis s ins insid ide. e. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10 3-10

6.2 6.2

Cha Chassis ssis outs outsid ide e . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 3-11

7

Packaging . . . . . . . . . . . . . . . . . . . . . . 3-12

Spare Parts

1

Chapter

Chapter 3

Terminal (SAT) 9

3

Item Designation

10 2 5 4 6 7

11

8

13

Note

Part No.

1 Terminal complete, without software

-

11107899

2 Leveling foot

-

11106839

3 Rubber foot

-

11600356

4 Latch

-

11106566

5 Terminal lower part

with item 3

11106840

6 Terminal PCB

without software

11106830

7 Display

-

11100826

8 Terminal uper part

with item 13

11106831

9 Terminal socket

-

11106918

10 Cable (Terminal PCB - Termi- nal socket)

11600463

11 Cable (Terminal PCB - Display)

-

11600226

13 Keypad

-

11106564

Spare Parts

2

Chapter

Chapter 3

Draft shield, Housing, Weighing pan 1


2

1

4 Item Designation

3

Note

Part No.

1 Side glass

-

11106841

2 Top glass

-

11106842

3 Front glass

-

11106843

4 Housing left

-

11106336

5 Housing right

-

11106337

6 Terminal support

-

11106539

7 Drip tray

-

11106449

8 Terminal cable

-

11106931

9 Weighing pan

-

11106709

10 Weighing pan

-

11106333

11 Leveling foot

-

11106323

12 AC Adapter

-

11106930

5 9

7 10

Item Designation

11

8 12 6

13

13 Line cable

Note DK GB USA AUS SA EU (Schuko) CH I

Part No. 87452 89405 88668 88751 89728 87925 87920 87457

Spare Parts

3

Chapter

Chapter 3

Carriyng handle, Electronics, Front cover

2


1

Item Designation 1 Carrying handle compl.

4

3 9

7

5

with item 2

2 Upper glass hoder

8 2

Note

6

Part No. 11106816 11106817

3 Clip side glass

-

11106496

4 Balance PCB

without Software without item 8

11106835

5 Housing and item. 6

with cable

11106952

6 Interface RS232C

-

11132500

6 Interface LocalCan

-

11132505

7 Front cover

with item 9

11106815

8 Battery

-

Item Designation 9 Model strip

Note XS64 XS104 XS105DU XS204 XS204DR XS205DU

86320

Part No. 11106071 11106069 11106067 11106065 11106063 11106061

Spare Parts

4

Chapter

Chapter 3

Cantilever arm XS64B XS104B XS105BDU XS204B XS204BDR XS205BDU

2

Item Designation

1

3

Note

Part No.

1 Partition

-

11106352

2 Cantilever arm 200 g

mounting, adjusting

11106827

3 Holder front glass

-

11106818

Spare Parts

5

Chapter

Chapter 3

Weighing cell 5.1

Overview Item Designation

B

A

C

Drawing

A Guide

see Section 5.2

B Lever

see Section 5.3

C Housing weighing cell

see Section 5.4

Spare Parts 5.2

Chapter

Chapter 3

Guide XS64B XS104B XS105BDU XS204B XS204BDR XS205BDU

2 Item Designation

5

4

Note

Part No.

1 Weighing cell 200 g compl.

with EEPROM 100 g and 200 g

11106811

2 Guide top compl.

-

11106822

3 Guide bottom compl.

-

11106823

4 Coupling comp.

with 6 Coupling 12 Screw 12 Cup washer

11106824

3 5 Support

-

11106806

6 Cell board 200 g

-

11106838

7 Set hanging bearings

with 6 hanging bearings 12 Screw 12 Cup washer

11106825

8 Lever

-

11106845

9 Magnet cover compl.

-

11106846

10 Cable (Weighing cell - Cell PCB)

-

11106944

11 Set counterwights

with 1 Screw short 1 Screw long 4 Washer

11106826

Spare Parts 5.3

Chapter

Chapter 3

Lever XS64B XS104B XS105BDU XS204B XS204BDR XS205BDU

9 8

6 Item Designation

12 11

Note

Part No.



11106811

2 Guide top compl.

-

11106822


-

11106823

4 Coupling comp.


11106824

7 5 Support

-

11106806

6 Cell board 200 g

-

11106838



11106825

8 Lever

-

11106845


-

11106846


-

11106944



11106826

12 Conductor strips

43540

Spare Parts 5.4

Chapter

Chapter 3

Weighing cell support XS64B XS104B XS105BDU XS204B XS204BDR XS205BDU

10

Item Designation

Note

Part No.



11106811

2 Guide top compl.

-

11106822


-

11106823

4 Coupling comp.


11106824

5 Support

-

11106806

6 Cell board 200 g

-

11106838



11106825

8 Lever

-

11106845


-

11106846


-

11106944



11106826

Spare Parts

6

Chapter

Chapter 3

Chassis 6.1

Chassis inside XS64B XS104B XS105BDU XS204B XS204BDR XS205BDU

2 12 Item Designation

13

Note

Part No.

1

1 Adjusting motor compl.

-

11106847

3

2 Cable (Adjusting motor PCB - Cell PCB)

11106941

3 Gearbox compl.

-

11106821

4 Holder left-right handling

-

11106610

5 Doorslide left

-

11106819

6 Doorslide right

-

11106820

7 Level

-

238311

8 Slide rail upper left

-

11106478

9 Slide rail upper right

-

11106479

10 Guide rail lower left

-

11106481

11 Guide rail lower right

-

11106482

12 Adjusting motor PCB

-

11106836

13 Gleitband

-

11106828

Spare Parts 6.2

Chapter

Chapter 3

Chassis outside XS64B XS104B XS105BDU XS204B XS204BDR XS205BDU

5 Item Designation

8

7

10 9 11 6 4

4

1 Adjusting motor compl.

Note

Part No.

-

11106847

2 Cable (Adjusting motor PCB - Cell PCB)

11106941

3 Gearbox compl.

-

11106821

4 Holder left-right handling

-

11106610

5 Doorslide left

-

11106819

6 Doorslide right

-

11106820

7 Level

-

238311

8 Slide rail upper left

-

11106478

9 Slide rail upper right

-

11106479

10 Guide rail lower left

-

11106481

11 Guide rail lower right

-

11106482

12 Adjusting motor PCB

-

11106836

13 Gleitband

-

11106828

Spare Parts

7

Chapter

Packaging Item

Designation

Note

Part No.

1

Packaging

11106849

2

Transport cover

11106851

3

Outer cardbord packing

11106860

Chapter 3

Checks

4

Chapter

Checks List of contents 1

Checklists. . . . . . . . . . . . . . . . . . . . . . . . 4-2

1.1 1.1.1 1.1.2

Maintenance checklist . . . . . . . . . . . . . . . . . . . . . . 4-2 Visual check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

1.2

Checklist for cleaning . . . . . . . . . . . . . . . . . . . . . . . 4-3

1.3

Checklist for repairs and adjustments . . . . . . . . . 4-3

1.4

Check overload . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Chapter 4

Checks

1

Chapter

Chapter 4

Checklists Before you start work on the balance, check the model strip and the type plate (see Section 2.1, Section 2.2, Chapter 1) to ensure that the balance in front of you is the balance which should be serviced.

WARNING Danger of electric current. Disconnect AC adapter from power supply. • Power supply and cable • Interface and data transmission cable • Auxiliary display

WARNING Standby circuit. The balance is energized when it is connected to the power supply. This is the case even if the display is switched off.

1.1

Maintenance checklist

1.1.1

Visual check

1.

Check that all necessary parts have been supplied.

2.

Check the condition of the following parts: • Housing and display • Key Overlay • Weighing pan and pan support, draft shield • Model plate • Leveling feet and level indicator • Protective cover

1.1.2

Function check

1.

Connect balance to power supply: Do the display and the keys function correctly?

2. 3.

If equipped with level, level balance. Acclimatize balance, approx. 2 hours. Only necessary if the balance has been without voltage for a long time. Check adjustment of balance using the following Tests (see Section 1, Chapter 9): • Hysteresis • Cornerload • Repeatability • Linearity (If linearization is necessary, this must be followed by Service adjustment CAL) • Sensitivity (If necessary, Service adjustment CAL at maximum load) If appropriate, check peripheral instruments.

4.

5.

Checks

1.2

Chapter

Checklist for cleaning WARNING Danger of electric current. Disconnect power cable between AC adapter and balance before starting work on the balance or terminal.

External cleaning

After cleaning Check the balance's repeatability! If it is outside the tolerance (see Section 2, Chapter 9), this may be due to brush hairs or dust fibers caught in moving parts.

1.3 1.

WARNING Do not use cleaning agents which contain solvents or abrasives. Cleaning agents must not enter the balance, terminal, or AC adapter.

2.

WARNING Do not blow near the weighing cell! Dust may enter the magnet system. Remove dust with a dry or slightly damp brush, or with a soft, non-fibrous cloth. Clean magnetic system see Section 6.6, Chapter 6. Clean adjustment weight and/or weight support with alcohol.

Checklist for repairs and adjustments Troubleshooting: • Troubleshooting (see Chapter 5) • Test using LARS, LabTec Repair and Service Software, (see Section 1, Chapter 7). Repairs • Replace faulty parts (see Chapter 6)

3.

Adjustment • The necessary adjustments, such as linearization or Service adjustment CAL for each type of balance are given as a service procedure in the LARS Help text LARS, (see Chapter 7).

4.

Final procedures • Reinstate user settings. • Connect peripheral devices if necessary. • Complete certification tasks Adjustments.

Clean housing, draft shield, and weighing chamber with a soft cloth and a small amount of mild, commercially available cleaning agent. IInternal cleaning

Chapter 4

Checks

1.4

Chapter

Chapter 4

Check overload Check B

1.

Place weight X corresponding to balance type (see table below) on weighing pan. The weighing pan must not move down.

2.

Push the weighing pan down by hand and let go. Weighing pan must automatically return to the starting position. Place additional weight Y (Weight X + Y) corresponding to balance type (see table below) on weighing pan. The weighing pan moves down.

A

3.

Note If the weighing pan does not move down, possible causes are the following: • The moving parts of the cantilever are soiled. • The force of spring A pressing on traverse B is too high (see Section 3.3.2, Chapter 6). 2207

Type XS64 XS104 XS105DU XS204DR XS204 XS205DU

Weight X

Weight Y

250g 250g 250g 250g 250g 250g

100g 100g 100g 100g 100g 100g

Troubleshooting

5

Chapter

Chapter 5

Troubleshooting List of contents 1

Troubleshooting . . . . . . . . . . . . . . . . . . 5-2

1.1

Display is dark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

1.2

Keypad does not function . . . . . . . . . . . . . . . . . . . 5-3

1.3

1.13

Gap between front glass (or panel?) and side panels . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

1.14

Display unstable, shows overload or underload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Display drifts, increases and decreases alternately. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

1.15

Display unstable after removing and re-installing adjustment weights . . . . . . . . . . . . . . . . . . . . . . . 5-16

1.4

Display unstable, constantly drifts into plus or minus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

1.16

Special characters are printed as hieroglyphs . 5-17

1.5

Display shows overload or underload. . . . . . . . . . 5-6

1.6

display flashes «0.00000». . . . . . . . . . . . . . . . . . . . 5-7

1.7

Taring not possible . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

1.8

Adjustment with internal calibration weights not possible . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

1.9

Excessive hysteresis . . . . . . . . . . . . . . . . . . . . . . 5-10

1.10

Corner load cannot be set . . . . . . . . . . . . . . . . . . 5-11

1.11

Linearity cannot be adjusted . . . . . . . . . . . . . . . . 5-12

1.12

Side panels of draft shield jam / move jerkily. . . 5-13

Troubleshooting

1

Chapter

Chapter 5

Troubleshooting 1.1

Display is dark

Error symptom

Possible cause

Diagnostic

Remedy

Display is dark

1. Balance on standby

-

Press "On" key

2. Power plug not connected

Check

Plug in power plug

3. AC adapter not connected to balance

Check

Plug in AC adapter

4. AC adapter is faulty

Green LED on AC adapter does not light

Replace AC adapter (see Section 2, Chapter 3)

5. Connector socket on balance is corroded or faulty

Check

Replace connector socket (balance PCB) (see Section 2, Chapter 3)

6. Power outage in building supply

• • •

Inform person responsible (building electrician)

7. Incorrect AC adapter

Check that input data on type plate match the power supply values

Select correct AC adapter (see Section 2, Chapter 3)

8. Terminal cable not plugged in

• •

•

Plug AC adapter into other socket Check socket with phase tester Plug in a different electrical device

Check plugged connection on terminal Check plugged connection on balance

•

Plug in terminal cable (see Section 1.1, Chapter 6) Plug in terminal cable (see Section 3.8, Chapter 6)

9. Terminal cable faulty

Check optically and electrically (kinks, check continuity, ring through)

Replace terminal cable (see Section 3.8, Chapter 6)

10.Display faulty

-

Replace display (see Section 5.6, Chapter 6)

11.Terminal software not loaded

• •

Establish connection to LARS/Service Mode Terminal software version is not displayed e.g. SW version bridge 1.00f SW version terminal 1.10

Load terminal software with E-loader II http://extranet.mt.com

Troubleshooting

1.2

Chapter

Chapter 5

Keypad does not function

Error symptom

Possible cause

Diagnostic

Remedy

Keypad does not function

1. Display is dark

see Section 1.1

-

2. Keypad or touchscreen is not plugged in

•

Check plug connection on terminal

Plug ribbon cable into terminal (see Section 5.5, Chapter 6)

3. Keypad faulty

•

Plug in a new keypad (without affixing it first). If it functions, the existing keypad is faulty. If it does not function, siehe Pos. 8 und 9.

Replace Keypad (see Section 5.6, Chapter 6)

4. Touch screen faulty

-

5. Faulty contacts on ribbon cable

• •

6. Terminal PCB faulty

-

Replace Touch screen (see Section 5.6, Chapter 6) Contact coating is scratched off Contact pin in socket is distorted

•

m m 1

•

Cut 1 mm off ribbon cable with scissors. The ribbon cable penetrates further into the socket. Replace the keypad.

Replace Terminal PCB (see Section 5.5, Chapter 6)

Troubleshooting

1.3

Chapter

Chapter 5

Display drifts, increases and decreases alternately

Error symptom

Possible cause

Diagnostic

Remedy

Increases and decreases alternately

1. Vibrations at the workplace

Place beaker with tap water on the weighing bench. Vibrations cause ripples on the water surface.

• • •

2. Drafts

• •

Check that draft shield is closed Check for gaps in draft shield

• • • •

3. Internal adjustment weight is jammed

Actuate adjustment motor from Service Mode or LARS. The weight display changes and becomes stable.

Protect weighing location against vibrations (vibration absorber, etc.) Set weighing parameters coarser (e.g. change «Environment» from «Very stable» to «Stable») Find a different weighing location (by agreement with customer) Close draft shield Adjust draft shield (see Section 4.3, Chapter 6) Insert side panels correctly (see Section 3.6, Chapter 6) Set weighing parameters coarser (e.g. change «Environment» from «Very stable» to «Stable»)

Insert adjustment weights correctly (see Section 3.3.3, Chapter 6)

4. Magnet system soiled

Clean magnet system (see Section 6.6, Chapter 6)

5. Loose screws on the measuring cell

Check correct seating of the screws (see Section 6.1.1, Chapter 6)

6. Moving part touching measuring cell

Check (see Section 6, Chapter 6)

7. Measuring cell is poorly positioned

see Section 3.2, Chapter 6

Troubleshooting

1.4

Chapter

Chapter 5

Display unstable, constantly drifts into plus or minus

Error symptom

Possible cause

Diagnostic

Remedy

Display constantly drifts into plus or minus

1. Sun or other heat source shines directly onto the balance

Is any sun shade (blinds, curtains, etc.) available?

Select location according to Operating Instructions (customer responsibility)

2. Weighing sample absorbs moisture or evaporates moisture

• •

Is the weighing result with a test weight stable? Sensitive weighing samples e.g. paper, cardboard, wood, plastic, rubber, liquids

• •

Use aids Cover weighing sample

3. Weighing sample is electrostatically charged

• •

Is the weighing result with a test weight stable? Sensitive weighing samples e.g. plastic, powder, insulating materials

•

Increase air humidity in weighing chamber (place water container in weighing chamber) Use ionizer (see under accessories)

4. Weighing sample is hotter or colder than the air in the weighing chamber

Weighing operation with test weight does not show this effect

5. Balance has not yet reached thermal equilibrium

• •

6. Internal adjusting weight is jammed

Actuate the adjustment motor from Service Mode or LARS. The weight display changes and becomes stable.

•

Bring weighing sample to room temperature before weighing.

Was there a power outage? Acclimatize balance for approx. 2 hours. Was the AC adapter unplugged (balance, socket) • •

Insert adjustment weight correctly (see Section 3.3.3, Chapter 6) Correctly adjust height of overload protection on arm (see Section 1.4, Chapter 4)

7. Hanging bearings / coupling mounted under tension or deformed.

Check, replace (see Section 7.3, Chapter 6)

8. Detector soiled or faulty

Check, replace (see Section 6.6, Chapter 6)


Clean magnet system (see Section 6.6, Chapter 6)

10.Loose screws on the measuring cell

Check correct seating of the screws (see Section 6.1.1, Chapter 6)

Troubleshooting

1.5

Chapter

Chapter 5

Display shows overload or underload

Error symptom

Possible cause

Diagnostic

Remedy

Display shows overload or underload

1. Incorrect weighing pan

Slightly lift or press weighing pan. The weight display appears

attach correct weighing pan

2. Missing weighing pan

Mount correct weighing pan

3. Weighing pan / pan support touches partition wall

see Section 1.14

4. Incorrect zero point at switch-on

• •

5. Incorrect TDNR

Input TDNR in LARS "Data" "Type definition" and check whether the balance type matches

6. Weight support/adjusting weights jammed

Switch off balance. Unplug power cable and plug in again.

Load TDNR (see Chapter 7) Insert adjustment weight correctly (see Section 3.3.3, Chapter 6)

7. Incorrect measuring cell built in

Check whether the part number of the new measuring cell matches the respective balance.

Build in correct measuring cell

8. Lever short-circuits to ground

Measure the resistance between the coil contact and the measuring cell chassis. >100 kΩ o.k.

Replace lever (see Section 6.5, Chapter 6)

9. Balance PCB faulty

Replace balance PCB (see Section 2.4, Chapter 6)

Troubleshooting

1.6

Chapter

Chapter 5

display flashes «0.00000»

Error symptom

Possible cause

Diagnostic

Remedy

display flashes «0.00000»

1. Lever/hanger cannot move freely, touches fixed parts

• • • •

Check hanger, position of measuring cell, and measuring cell (see Section Section 3.2 3.2.3 .3,, Ch Chap apte terr 6)

2. Ribbon cable not plugged into balance or faulty

Check all cable connections on the balance PCB and cell PCB

Plug in ribbon cable

3. Current-conducting strips are touching, badly soldered or broken

Use measuring instrument to check continuity (ring through)

Replace current-conducting strips (see Section Section 7.3 7.3.4 .4,, Sec Sectio tion n 7.5 7.5,, Ch Chap apte terr 6)

4. Coil short-circuits to ground, short-circuits otherwise, or is interrupted

Measure resistance Type Coil resistance XS64 200 Ω ±5% XS104 200 Ω ±5% XS105DU 200 Ω ±5% XS204DR 200 Ω ±5% XS204 200 Ω ±5% XS205DU 200 Ω ±5%

Replace lever (see Secti Section on 6.5 6.5,, Ch Chapt apter er 6)


Swi Switch tch off off bal balan ance ce Unpl Unplug ug pow power cabl cable e Remo Remove ve weig weighi hing ng pan pan Press Press ligh lightly tly on weighi weighing ng pan suspens suspension ion Typical click of the measuring cell must be audible

Replace balance PCB (see Secti Section on 2.4 2.4,, Ch Chapt apter er 6)

Troubleshooting

1.7

Chapter

Chapter 5

Taring not possible

Error symptom

Possible cause

Diagnostic

Remedy

Tarin aring g not not poss ossible ible

1. Vibrations at the workplace

• •

see Sect Section ion 1.4

Pre Press Ta Tare ag again Disp Displa lay y unst unstab able le

Troubleshooting

1.8 1.8

Chapter

Chapter 5

Adju Adjust stme ment nt with with inte intern rnal al cali calibr brat atio ion n wei weigh ghts ts not not poss possib ible le

Error symptom

Possible cause

Diagnostic

Remedy

Internal calibration not possible

1. Weighing pan is loaded

Check

Unload (empty) weighing pan

2. Dead load too small

Check tolerance values in Service Mode and compare with tolerance table (see ( see Sect Section ion 9)

3. Weight supports of the adjustment weights are jammed or outside the supporting position

•

Lower Lower the interna internall weight weights s from from Servi Service ce Mode Mode or or LARS • If the the displa display y remain remains s unstab unstable, le, rais raise e the inte interna rnall weights and place external weights in position. If the display is stable the weight supports or ad justing weights are jammed. If the display is unstable, see Secti Section on 1.3

see Sectio Section n 3.3 3.3.3 .3,, Ch Chap apte terr 6

4. Adjusting motor is faulty

No sound from motor

• • •

Plug in cable to motor Replace mo motor PC PCB Replace mo motor

5. Adjusting weights do not move

Sound from motor

•

Replace gearwheels

Troubleshooting

1.9

Chapter

Chapter 5

Excessive hy hysteresis

Error symptom

Possible cause

Diagnostic

Remedy

excessive hysteresis

1. Hair, dust fibers, or dirt between fixed and moving parts

Check

2. Detector soiled or faulty

Check, replace (see Secti Section on 6.3 6.3,, Ch Chapt apter er 6)


Clean magnet system (see Secti Section on 6.6 6.6,, Ch Chapt apter er 6)

4. Loose screws on the measuring cell

Check correct seating of the screws (see Section Section 6.1 6.1.1 .1,, Ch Chapt apter er 6)



Troubleshooting

1.10

Chapter

Chapter 5

Corner load can cann not be be se set

Error symptom

Possible cause

Diagnostic

Remedy

Corner load cannot be set

1. Exce Excess ssiv ive e hys hyste tere resi sis s

Check Check hyst hyster eresi esis s • Touch Touch empty empty weighi weighing ng pan pan and and raise raise sligh slightly tly Display does not return to original value • Place Place weigh weightt on pan and touch touch weigh weighing ing pan without moving weight

see Sect Section ion 1.9

2. Hanging bearings mounted under tension or deformed

Check, replace

3. Corner load coarse adjustment was not done

Perform coarse adjustment (see Secti Section on 8.5 8.5,, Ch Chapt apter er 6)

Troubleshooting

1.11 1.11

Chapter

Chapter 5

Line Linear arit ity y can canno nott be be adj adjus uste ted d

Error symptom

Possible cause

Linearity cannot be adjusted

1. Incorrect switch-on zero point

• •

2. Excessive hysteresis

Check, adjust (see Secti Section on 8.1 8.1,, Ch Chapt apter er 6)

3. Corner load too high

Check, adjust (see Secti Section on 8.2 8.2,, Ch Chapt apter er 6)




Replace balance PCB (see Secti Section on 6.4 6.4,, Ch Chapt apter er 6)

6. Adjustment parameters outside permitted range

Reload cell data (see Sect Section ion 7)

7. Incorrect coarse adjustment

Diagnostic

Perform CAL (Service menu or LARS)

Remedy Swit Switch ch off off bal balan ance ce.. Unpl Unplug ug pow power er cab cable le and and plu plug g in aga again in..

Mandatory sequence of adjustments: • CAL • LIN • Std CAL • CAL

Troubleshooting

1.12

Chapter

Chapter 5

Side panels of draft shield jam / move jerkily

Error symptom

Possible cause

Diagnostic

Remedy

Side panels jam or jerk when opening and/or closing

1. Side panels are not inserted correctly.

There is a gap C between the lower edge of side panel A and door guide B.

Remove side panel and insert correctly (see Section 3.6, Chapter 6).

D

A C 2627

2. Partition wall is not installed centrally.

In all positions of the side panel A, there must be room to insert a paper strip E between side panel A and partition wall D. Check insertion with side panel open, half open, closed.

B

D A E

2635

Insert partition wall centrally in the baseplate. (see Section 3.2.3, Chapter 6)

Troubleshooting

1.13

Chapter

Chapter 5

Gap between front glass (or panel?) and side panels

Error symptom

Possible cause

After the front panel is removed and reinserted the original position of the front panel is not obtained.

1. The front panel is not correctly adjusted.

2. The partition wall is too near the front (terminal side).

Diagnostic

Remedy Adjust front panel correctly (see Section 4.3.1, Chapter 6)

The drip tray A must not jam between the front panel B and partition wall C.

2638

•

• •

C

A

B 1831

D

Push baseplate of weighing cell D completely to the back. (see Section 3.2.1, Chapter 6) Insert partition wall centrally. (see Section 3.2.3, Chapter 6) Close balance and re-adjust draft shield (see Section 3, Chapter 6).

Troubleshooting

1.14

Chapter

Chapter 5

Display unstable, shows overload or underload

Error symptom

Possible cause

Diagnostic

After removing and re-installing the cell, the display is unstable or shows overload or underload.

1. The cell is too far to the front (terminal side)

•

•

Remedy

The suspension points A on the cantilever arm must not touch the partition wall B. The weighing pan C must not touch the partition wall.

2642

2641

A

B

B

C

Install the weighing cell correctly. (see Section 3.2, Chapter 6).

Troubleshooting

1.15

Chapter

Chapter 5

Display unstable after removing and re-installing adjustment weights

Error symptom

Possible cause

Diagnostic

Remedy

After removing and re-installing the adjustment weights and weight supports: • the display is unstable • overload or underload is displayed

1. Weight supports A of the adjustment weights B are jammed or outside the support positions.

The internal calibration is aborted.

Correctly insert the weight support and adjustment weights (see Section 3.3.3, Chapter 6).

A B

B A 1820

Troubleshooting

1.16

Chapter

Chapter 5

Special characters are printed as hieroglyphs

Error symptom

Possible cause

Special characters (ä, ö, ü, à, é, è, ...) are printed as illegible hieroglyphics.

1. Printer setting of the balance is incorrect.

2. Setting on the RS-P printer is incorrect.

Diagnostic

Remedy Setting under: System/Peripheral/Printer/RS232fix - define//Set translation to IBM/DOS.

N O

1

Set DIP switch (under battery compartment) according to sketch at left. 2

DTS-2

Repairs

7.3 7.3.1

Chapter

7.3.2 7.3.3 7.3.4

Hanging bearings . . . . . . . . . . . . . . . . . . . . . . . . . 6-66 Symptoms of a distorted hanging bearings or coupling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-66 Tips for replacing hanging bearings or couplings . . 6-66 Remove hanging bearings. . . . . . . . . . . . . . . . . . . . 6-67 Install hanging bearings. . . . . . . . . . . . . . . . . . . . . . 6-68

7.4

Insert hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-70

7.5

Close weighing cell . . . . . . . . . . . . . . . . . . . . . . . . 6-71

8

Mechanical adjustment of the balance . . . . . . . . . . . . . . . . . . . 6-75

8.1

Check hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . 6-75

8.2 8.2.1 8.2.2

Corner load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-76 Check corner load . . . . . . . . . . . . . . . . . . . . . . . . . . 6-76 Fine-adjust corner load . . . . . . . . . . . . . . . . . . . . . . 6-77

8.3 8.3.1 8.3.2

Check/adjust dead load . . . . . . . . . . . . . . . . . . . . 6-78 Check dead load . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-78 Adjust dead load . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-79

8.4 8.4.1 8.4.2 8.4.3

Check/adjust levelness . . . . . . . . . . . . . . . . . . . . . 6-80 Level zero-point. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-80 Check level sensitivity . . . . . . . . . . . . . . . . . . . . . . . 6-82 Adjust/replace level indicator. . . . . . . . . . . . . . . . . . 6-83

8.5 8.5.1 8.5.2 8.5.3

Coarse-adjust corner load . . . . . . . . . . . . . . . . . . 6-84 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-84 Expose weighing cell . . . . . . . . . . . . . . . . . . . . . . . . 6-85 Coarse adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 6-87

Chapter 6

Repairs

1

Chapter

Chapter 6

Preparing the Balance for Repair WARNING Hazard from electric current. Unplug power supply cable before starting work on balance or terminal.

1.1

Unplug terminal from balance

C

A

1.

Lift terminal A off terminal support B and place next to balance.

2.

Pull out terminal support B.

Note Do not scratch display.

B

3. 4.

Press latches C at both sides. The terminal can be opened. Unplug terminal cable D.

5.

Close terminal and put aside.

1770

D

1772

Repairs

2

Chapter

Chapter 6

Removing the components 2.1

Working on electronically damageable components WARNING Electrostatically damageable components.

2703

• •

• • •

Always use antistatic kit when working on electronic components ( see Section 1.2 , Chapter 11 ). When removing and installing the Weighing cell, neither the detector board nor the cable contacts may be touched. If no workplace with ESD protection is available, always touch the bottom housing or any other metal part of the balance before any contact with the electronics. Following this action, t he board and the balance are at the same electrical potential as the person performing the work. Boards which are returned for repair must be packaged in the original antistatic packaging regardless of the fault. EEPROMs kept outside the balance must be stored on conductive foam. If soldering work is performed on the boards, a soldering iron isolated from the power supply (isolating transformer) is recommended. Exchangeable components which are sensitive to electrostatic discharge are marked with an ESD protection symbol.

Repairs

2.2

Chapter

Chapter 6

Dismantle draft shield

Spare parts: see Section 2, Chapter 3. Disconnect terminal from balance (see Section 1.1).

C

A

1.

Tilt front glass A toward front and remove.

2. 3.

Tilt top glass B upward and remove. Tilt side glasses C and D outward and remove.

D Assemble draft shield see Section 3.6. Repair / Adjusting the draft shield see Section 4 1780

1774

B

1775

Repairs

2.3

Chapter

Chapter 6

Open Housing

Spare parts: see Section 2, Chapter 3. Disconnect terminal from balance (see Section 1.1). Dismantle draft shield (see Section 2.2). 1.

A B E C 1781

2. 3.

Pull bottom of weighing pan A slightly toward front and unhook. Pull off drip tray B. Push door slide C toward back.

4.

Tip balance toward back and lay on rear wall.

5.

Unscrew and remove the two screws D (Torx M4 x 8) for the bottom plate E. Return balance to standing position. Lift off bottom plate E.

6. 7. D D

1786

Close housing: see Section 3.5.

Repairs

Chapter

2.3.1

Chapter 6

Remove housing

1787

1788

G M

1.

Unscrew and remove screws F (Torx M4 x8).

2. 3.

Push slide G on carrying handle fully toward front. Raise flap M. Swivel housing outward (in direction of arrow Y) and pull off toward back.

1. 2.

Pull slide G on carrying handle toward back. Unscrew and remove screw H (Torx M4 x 8) and screws J (Torx M4 x8).

3. 4.

Lift carrying handle up and off. Pull clip of side glass L off to left and right (in the carrying handle or in the partition).

Y

F

2.3.2

F

Remove carrying handle

1790 1791

G K H J J

L

Repairs

Chapter

2.4

Chapter 6

Remove balance PCB

Spare parts: see Section 3, Chapter 3. WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ). Unplug terminal from balance (see Section 1.1). Dismantle draft shield (see Section 2.2). Open Housing (see Section 2.3). A 2202

E D

D B

C

2205

1.

Lift screening A of balance PCB up and off.

2.

Unplug cables B and C.

3. 4.

Unscrew and remove screws D (Torx M4 x 6). Lift off electrical chassis E with balance PCB.

Install balance PCB see Section 3.4.

Repairs

2.5

Chapter

Chapter 6

Remove cantilever arm

Spare parts: see Section 3, Chapter 3.

2.5.1

Remove adjustment weights

1817

Unplug terminal from balance (see Section 1.1).

1820

Dismantle draft shield (see Section 2.2). Open Housing (see Section 2.3). 1.

2. 3.

Remove front cover A: • tilt outward at bottom • slide upward and out. Unscrew and remove screws B (Torx M3 x 6 with washers). Remove weight cover C.

Note D E A

Never touch weights D or weight support E with bare hands. Always use special tweezers for weights. If the weights and/or weight support have been touched, clean them/it with alcohol.

B C

B

4. 5.

Lift weights D out. Remove weight support E.

Insert adjustment weights see Section 3.3.3.

Repairs

2.5.2

Chapter

Chapter 6

Lift cantilever arm out

2831

2826

J H

1. 2.

Grasp arm F of cantilever arm and lift slightly. Cantilever arm is slightly raised from the lower bearing position G. Angle the cantilever arm, splay the yoke J upward using the thumb of your other hand (in the direction of the arrow). In this way the cantilever arm will be lifted out of the upper bearing position H and can be dismantled.

Hook cantilever arm into position see Section 3.3.1. G

F

Repairs

Chapter

2.6

Chapter 6

Remove weighing cell

Spare parts: see Section 5, Chapter 3 Unplug terminal from balance (see Section 1.1). Dismantle draft shield (see Section 2.2). Open Housing (see Section 2.3). Remove balance PCB (see Section 2.4). Remove cantilever arm (see Section 2.5). B A

C

1801

1897

D

E

1. 2.

Unscrew and remove screws A (Torx M4 x8). Remove rear wall B.

3.

Remove partition D. • Loosen screws E (Torx M4 x 16) at both sides but do not remove. • Lift partition D up and off.

4.

Lift screening C up and off. Do not damage ribbon cables.

Repairs

Chapter

F

Chapter 6

5. 6.

Unscrew and remove screws F (Torx M4 x 8) at front. Loosen screw G (Torx M4 x 8) at back but do not remove.

7.

Lift weighing cell out.

Completely dismantle the weighing cell see Section 6. Install weighing cell see Section 3.2.2.

F 1972

G

1974

Repairs

2.6.1

Chapter

Chapter 6

Remove weighing cell base plate 1831

K H

1.

Unscrew and remove screws H (Torx M4 x 8).

2.

Lift weighing cell base plate J up and off. Slide ribbon cable K out.

Install weighing-cell bottom-plate see Section 3.2.1

J H

Repairs

2.7

Chapter

Chapter 6

Remove adjusting motor PCB

Spare parts: see Section 6, Chapter 3. WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ). Unplug terminal from balance (see Section 1.1). Dismantle draft shield (see Section 2.2). F

Open Housing (see Section 2.3). Remove balance PCB (see Section 2.4). Remove cantilever arm (see Section 2.5). Remove weighing cell (see Section 2.6). 1838

1. 2.

Unscrew and remove screws F (Torx M3 x 6) from adjusting motor PCB. Unplug cable from motor and terminal cable

3.

Remove adjusting motor PCB.

IInstall adjusting motor PCB see Section 3.1

Repairs

Chapter

2.8

Chapter 6

Replace gearbox

Spare parts: see Section 6, Chapter 3. Unplug terminal from balance (see Section 1.1). Dismantle draft shield (see Section 2.2).

B

Open Housing (see Section 2.3).

A

H

Remove balance PCB (see Section 2.4). Remove cantilever arm (see Section 2.5).

G

C

Remove weighing cell (see Section 2.6). Remove adjusting motor PCB (see Section 2.7). Remove

1970

E

1. 2.

F

3. 1971

X

Unscrew and remove screws A (Torx M3 x 6 with washers). Remove motor with carrier B. Open plastic clip C and remove all gear wheels.

Install

1843

C

1.

Insert the two large wheels E and F so that the holes at the edges line up with the depressions in the chassis X. Use aligning pin (see Section 1.3, Chapter 11)

2. 3. 4.

Insert gear wheels G and H. Pull centering pins out of gear wheels E and F. Install motor and mounting B. The motor pinion must completely engage with the t eeth of gear wheel H.

5.

Tighten screws A (Torx M3 x 6 with washers).

Repairs

Chapter

2.9

Chapter 6

Replace slide rail, guide rail.

Spare parts: see Section 6, Chapter 3.

2.9.1

Replace slide rail Unplug terminal from balance (see Section 1.1). Dismantle draft shield (see Section 2.2). Replace door slide (see Section 4.2.3).

E

Open Housing (see Section 2.3). Remove balance PCB (see Section 2.4).

X

Remove cantilever arm (see Section 2.5).

1847

C1

C2

C1

D

Remove weighing cell (see Section 2.6).

1849

1.

Unscrew and remove screws C1 and C2(K25 x 10).

2.

Turn chassis over, unscrew and remove screw D (K25 x 10).

3.

Replace slide rail E.

4. 5. 6.

Tighten screw C1. Fasten screw C2, do not tighten. Pull slide rail E slightly outwards X (within the hole tolerance). Tighten screw C2. Tighten screw D.

7. 8.

Repairs

2.9.2

Chapter

Chapter 6

Replace guide rails Replace slide rail (see Section 2.9.1).

1850

F

F

G

1.

Stand chassis on leveling feet.

2.

Unscrew and remove screws F (K25 x 10).

3. 4.

Replace guide rails G. Insert and screw in screws F.

Repairs

3

Chapter

Chapter 6

Installing the Components WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ).

3.1

Install adjusting motor PCB 1. F

1838

2.

Plug in cable of motor and terminal cable on adjusting motor PCB. Insert adjusting motor PCB.

3.

Tighten screws F (Torx M3 x 6) on adjusting motor PCB.

Repairs

Chapter

3.2

Install weighing cell

3.2.1

Install weighing-cell bottom-plate 1.

1831

K H

2.

Chapter 6

Insert ribbon cable K through opening in weighing-cell bottom-plate J. Insert weighing-cell bottom-plate J.

Note X

Do not pinch ribbon cable.

J

3.

H

H

4.

Position bottom plate • Push bottom plate all the way to the back of the chassis (direction of arrow X) • Center bottom plate laterally in chassis (visually) Tighten screws H (Torx M4 x 8).

Repairs

3.2.2

Chapter

Chapter 6

Install weighing cell

F

F 1972

G

1974

1.

Insert weighing cell.

2.

Screw in screws F (front side Torx M4 x8) but do not tighten. Screw G (rear side Torx M4 x 8) is located in the weighingcell bottom-plate.

Repairs

Chapter

3.2.3

Chapter 6

Align weighing cell If the weighing cell was not dismantled 1. 2. 3.

W

W X

Y

= =

4.

Evenly (dimension X) align weighing cell laterally in chassis. The opening at the tip of the arm must lie symmetrically relative to the nose in the chassis (detail Y). Evenly tighten screws F (front side) and screw G (rear side).

5.

Unhook cantilever arm.

If the weighing cell was dismantled 6.

Distance Z (measuring cell - yoke) must be the same on both sides.

7.

Insert cantilever arm (see Section 3.3.1). The opening at the tip of the arm must lie symmetrically relative to the nose in the chassis (detail Y). Evenly tighten screws F (front side ) and screw G (rear side). Unhook cantilever arm.

8. 9. 2212

Slide the weighing cell all the way forward W (within the hole tolerance) Hook cantilever arm into position (see Section 3.3.1).

Note

2278

Z

Z

If the weighing cell cannot be aligned according to steps 6 and 7, the cell is installed out of alignment on the cell plate A (see Section 7.5).

Repairs

Chapter

1897

D

Chapter 6

10.

Insert partition D. Tighten screws E (Torx M4 x 16) at both sides.

11. 12. 13.

Insert rear wall B. Screw in screws A (Torx M4 x 8). Insert the Screening C. Insert ribbon cable in the support provided on the inside of the screening. Hook cantilever arm into position (see Section 3.3.1).

E 14.

Check installation of weighing cell Insert cover, hanger and drip tray. Vertical alignment: The cantilever arm may not touch the partition. Horizontal alignment: The cantilever arm must be aligned with the cover. 2837

2834

B A

C

1801

X

X

Repairs

Chapter

3.3

Install cantilever arm

3.3.1

Hook cantilever arm into position

J

1.

Grasp arm F of cantilever arm. Splay the yoke J upward using the thumb of your other hand (in the direction of the arrow). Tilt slightly and raise into the upper bearing position H.

2.

Lift the cantilever arm in the bearing position H. This allows the plug S to be lowered into the lower bearing position G.

2831

2826

H

S F

Chapter 6

Repairs

Chapter

3.3.2

Chapter 6

Align cantilever bearing Adjust height The arm F of the cantilever may not touch the plug X in the chassis. The plastic ring D must be at the stop Y. To adjust, move the overload protection. X

2212_A

1. 2.

Unscrew screw A. Push the cantilever together using two fingers. (Observe height ca. 1.5 mm over plug X).

3.

The plastic ring D on the spring assembly must be at the stop Y.

4.

Fasten screw A.

Check Insert adjustment weights and mount weight cover (see Section 3.3.3). The play between arm F and plug X must be maintained. Y D A

2608

Repairs

Chapter

Chapter 6

Set position The arm of the cantilever arm must lie centrally in the chassis relative to the nose (see Section 3.2.3). Adjustment is by changing the pressure of the springs C. 1. 2.

E C

C D

Place weight (e.g. adjustment weight of the balance) on the cantilever arm. Loosen both screws D. The springs C no longer lie against the traverse E.

3.

Screw in one of the two screws D until the spring C very lightly touches the traverse.

4.

Remove weight from arm.

Check When the cantilever arm is moved to the side and released, it must automatically spring back to the centered position.

D

5. Y

Screw in the other screw D until the opening at the tip of the cantilever arm lies symmetrically relative to the nose in the chassis (Detail Y).

Check = =

When the cantilever arm is moved to the side and released, it must automatically spring back to the centered position. Note

2207

The springs C may only make contact with the traverse. If the pressure is too high, the function of the overload protection is no longer assured.

Repairs

Chapter

3.3.3

Chapter 6

Insert adjustment weights

1820

Note

1817

Never touch weights D or weight support E with bare hands. Always use tweezers for weights. If the weights and/or weight support have been touched, clean them/it with alcohol. 1. 2. A

3. 4.

D E

B C B

Insert weight support E. Insert weights D. The grooves of the weights are not symmetrical. When inserting the weights, make sure to insert them the same way round.

5.

Place weight cover C in position. Do not trap the weight support E. Weight cover and weight support must be flush with each other (detail X). Tighten screws B (Torx M3 x 6 with washer).

6.

Insert front cover A.

Note The adjustment weights are centered by the weight cover. However, the cover must not squeeze the weights. If necessary, move weighing cell lengthwise (see Section 3.2.2).

Repairs

Chapter

3.4

Chapter 6

Install balance PCB WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ). If the balance PCB is replaced (see Section 3, Chapter 3), the EEPROM G which corresponds to the type of balance and is enclosed with the replacement PCB must be inserted. G E D

D

EEPROM 100 g

EEPROM 200 g

XS64B XS104B XS105BDU

XS204B XS204BDR XS205BDU

B C

2205

1. 2.

Insert electro chassis E with balance PCB. Insert EEPROM G.

3. 4.

Screw in screws D (Torx M4 x 6). Insert cables B and C. Position ferrite core F as shown.

5.

Insert the screening of the balance PCB.

Note Teeth must be inserted alternately inside and outside chassis. F

F 1860

1859

Repairs

Chapter

3.5

Close housing

3.5.1

Install carrying handle 1.

Chapter 6

F

2.

Insert clip of side glass L in partition left and right. Ensure correct positioning. The plug X must point upward. Place handle K in position.

K

3.

Pull slide F on carrying handle toward back.

4.

Screw in screw H (Torx M4 x 8) and screws J (Torx M4 x 8).

1. 2.

Push slide G on carrying handle completely to the front. Slide side walls H in sideways.

3.

Screw in screws F (Torx M4 x 6).

1790 1791

H J J

3.5.2 1788

L

X

Insert housing 1787

G

F

Repairs

3.5.3

Chapter

Chapter 6

Assemble housing

D D

1.

Place bottom plate E into position.

2. 3.

Tip balance toward back and lay on rear wall. Screw in the two screws D (Torx M4 x 8) for the bottom plate E.

4.

Return balance to standing position. Push door slide C toward back. Insert drip tray B.

5. 6. 1786

Note The contact surfaces X on the rear edge of the drip tray B must be clean. 7. X

A B E

C 1781

Hook weighing pan A into position.

Repairs

Chapter

3.6

Chapter 6

Assemble draft shield 1.

C D

2.

A

3.

1780

1774

Tilt side glasses C and D, insert into the door slides, then position vertically. • The side glasses must engage in the respective clips for the side glasses. Tilt side glass A, insert, and position vertically. The glass noticeably engages. With glass B tilted, slide in, and lower. The glass noticeably engages.

Note The top glass must be aligned with the side glasses and the front glass. For information, see Section 4.1. 4.

B

1775

Clean draft shield. Remove finger marks from the glass surfaces with a normal commercial glass cleaner and soft cloth.

Repairs

3.7

Chapter

Chapter 6

Replace battery WARNING Danger from electric current. Unplug power cable (from AC adapter to balance) before starting work on the opened balance. WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ). Unplug terminal from balance (see Section 1.1). Dismantle draft shield (see Section 2.2). Open Housing (see Section 2.3).

2216

A

The battery is located on the balance PCB.

B

1. 2. 3.

Press contact spring A slightly to the side and hold it there. Replace battery B.

4.

Assemble balance (see Section 3.5 and Section 3.6)

Secure battery with contact spring.

Repairs

3.8

Chapter

Chapter 6

Replace terminal cable WARNING Danger from electric current. Unplug power cable (on balance or terminal) before starting work on the opened balance. WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ). Dismantle draft shield (see Section 2.2)

1834

A

A

1. 2.

Lay balance on back. Unscrew and remove 5 screws A (Torx M4 x 6) from base plate.

Note To allow all the screws A to be unscrewed, the door slide C must be moved.

1816

3.

B

C

Lift bottom plate B with door slide C.

Repairs

Chapter

1816

E

D

2218

Chapter 6

4. 5.

Remove cover plate D (3 screws Torx M4 x 6). Replace terminal cable E.

6.

Fasten cover plate D.

Repairs

Chapter

1834

7.

Place bottom plate B with door slide C into position. Do not pinch terminal cable. All four roller bearings G of the door slide must be conducted to the bottom plate.

8.

Tighten 5 screws A (Torx M4 x 6) of bottom plate.

A

A

Chapter 6

Note To allow all the screws to be tightened, the door slide C must be moved. 9.

Turn chassis over and stand on leveling feet.

Note The door slide C must be able to slide backward and forward without jamming. B

C

2834

Repairs

3.9

Chapter

Replace level indicator

For information on replacing and adjusting the level indicator, see Section 8.4.3.

Chapter 6

Repairs

4

Chapter

Chapter 6

Repair / Adjusting the draft shield 4.1

Replace upper glass holder

A C

B

2199

A

2201

1. 2.

Remove upper glass A. Lift off screw covers.

3. 4.

Unscrew and remove screws B on support C. Install new support.

5.

Insert upper glass A and align (see Section 4.2).

Repairs

Chapter

4.2

Adjusting the top glass

4.2.1

Set position of top glass

Chapter 6

Eliminate air gaps between front glass and side panels (see Section 4.3.1) Set angle between front glass and side panels (see Section 4.3.2)

B C A

1. 2.

Remove screw covers A at both sides of support B. Loosen screws C at both sides of support.

3.

Lay spacer E on guide rails of side panels e.g. 2-4 businesscards, thickness 0.5 - 1 mm. Adjusting top glass (optical).

4. 5.

Tighten screws C at both sides of support. When tightening the screws C, do not press the support or top glass D out of alignment.

Note The distance X between guide rails of side panel and top glass must be the same in front and rear position.

D

X

X

E

B

D

3064

6. 7.

E

Remove spacer E. Insert screw covers A at both sides of support.

Repairs

4.2.2

Chapter

Chapter 6

Set front stop of top glass Set position of top glass (see Section 4.2.1). The front glass must be set so that: • When the top glass is closed, the front glass is not tipped toward the front (no air gap) • The top glass does not form an air gap with the front glass. A

2290

1.

The correct distance is set by turning screw A.

Repairs

4.2.3

Chapter

Chapter 6

Replace door slide Unplug terminal from balance (see Section 1.1). Dismantle draft shield (see Section 2.2). Remove bottom plate (see Section 2.3). 1. 2.

Loosen screw A (K25 x 10) on the guide cam, but do not remove. Swivel guide cam to side, and remove door slide B.

Note

1852

A

B

Only screw the screw A so far into the guide cam that the guide cam does not jam. It must be possible to move the door guide backward and forward in the guide without noticeable resistance.

Repairs

Chapter

Chapter 6

4.3

Adjusting the draft shield

4.3.1

Eliminate air gaps between front glass and side panels

C

1. 2.

Insert side panels A and front glass B. Loosen setscrew C of front panel.

3.

Pull door carriage completely forward.

4.

Press front glass lightly against the side panels. There must be no air gap between the side panels and the front glass.

5.

Fasten setscrew C.

When the door carriage is moved backward and forward several times, no air gap must form. 2297

A B

2298

Repairs

4.3.2

Chapter

Chapter 6

Set angle between front glass and side panels If new side panels are installed, it is possible that the air gap cannot be completely eliminated with the procedure described under Section 4.3.1. In this case, the horizontal position of the left or r ight slide rail A can be adjusted.

B

A

Preparation: Open Housing (see Section 2.3) Position 1 -7

C

1.

Loosen setscrews B. Any air gap C between the slide and guide rails is then eliminated.

2.

Set side panels and front glass.

2302

If there is still a remaining air gap between the glass panels, the left or right slide rail can be raised by screwing the setscrew in.

Repairs

5

Chapter

Chapter 6

Repairing the Terminal Spare parts: see Section 1, Chapter 3. WARNING Hazard from electric current. Unplug power supply cable before starting work on balance or terminal.

5.1

Prepare terminal for repair

Unplug terminal from balance (see Section 1.1).

5.2

Replace latch 1.

1867

1866

1816

A

C

B

A

2. 3.

Swivel leveling foot upward. (Press latch A on both sides. The leveling foot swivels upward.) Lift tongue B on metal spring. Move metal spring C and lift out of housing.

4.

Replace latch A.

Repairs

Chapter

5.3

Chapter 6

Replace leveling foot 1. 2.

A

Completely open terminal. Press leveling foot slightly outward at the position shown and move to the side. The leveling foot can then be removed from the swivel points A.

A

1816

5.4

Open/close terminal Replace latch (see Section 5.2). Replace leveling foot (see Section 5.3). Open 1. 2.

A A

Close 3. 4.

1816

2194

Unscrew and remove screws A. Lift off terminal lower part.

Place terminal lower part in position. Screw in screws A.

Repairs

Chapter

5.5

Chapter 6

Remove/install terminal PCB WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ). Open/close terminal (see Section 5.4).

2195

A

Remove 1. 2.

F

E

Lift screening A. Release fastener on plug connector B (direction of arrow) and unplug ribbon cable C. Unplug all ribbon cables D (release fasteners). Unplug plug E. Lift terminal PCB out.

3. 4. 5.

1816

D D

D

C

B

1872

Install 1. 2. 3. 4. 5. 6.

A rubber ring F must be placed at each of the supporting points. Insert terminal PCB. Insert plug E. Plug in all ribbon cables D and fasten. Plug in ribbon cable C and fasten. Place screening A in position. All the teeth of the screening must be located inside the housing.

Note Load Terminal Software with e-loader see Section 5.3, Chapter 7

Repairs

5.6

Chapter

Chapter 6

Remove/install display WARNING Display is very easily scratched. Avoid finger marks and dust. If cleaning is required, use only a soft cloth (as for spectacles). Do not use paper. Open/close terminal (see Section 5.4).

1875

Remove/install terminal PCB (see Section 5.5). Remove

A

A

1.

Unscrew screws A.

2.

Lift out display B and carefully put aside.

Install 3. 4.

B

Insert display B and align. Tighten screws A.

Repairs

5.7

Chapter

Chapter 6

Replace terminal sockets WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ). Open/close terminal (see Section 5.4).

1880 1881

B A

1.

Release fastener on terminal socket A (direction of arrow) and unplug ribbon cable.

2.

Unscrew screws B.

3. 4.

Replace terminal socket. Insert ribbon cable and fasten.

Repairs

6

Chapter

Check/Repair Weighing Cell WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ).

6.1

Special instructions for safety and handling

To avoid (further) damage to the weighing cell during inspection and repair, the following instructions must always be observed. Reminders of these instructions are given at relevant points in this document.

Chapter 6

Repairs

6.1.1

Chapter

Chapter 6

Correctly tighten screw with locking ring and washer WARNING The upper and lower guides, hanging bearings, and coupling are fastened with special screws. The installation instructions which follow below must always be observed. Upper and lower guides Fasten with special screw A and locking ring B. • Using a corresponding screwdriver, screw in the screw until resistance becomes noticeable. • Unscrew the screw by 1/12 of a turn and tighten the screw by turning lightly. • If a torque screwdriver is available, set the torque to 60 Ncm. 1924_A

A

B

Hanging bearings and coupling Fasten with special screw A, locking ring B, and washer C. • Using a corresponding screwdriver, screw in the screw until resistance becomes noticeable. • Unscrew the screw by 1/12 of a turn and tighten the screw by turning lightly. • If a torque screwdriver is available, set the torque to 60 Ncm. A

C

B

Repairs

6.2

Chapter

Chapter 6

Prepare weighing cell for checking/repair Remove weighing cell (see Section 2.6). A

1. 2.

Unplug all cables from the cell PCB. Unscrew screws A (Torx M3 x 6).

B

3.

Lift top screening B off.

A

1904

Repairs

Chapter

6.3

Check/adjust coil centering

6.3.1

Open/close magnetic coil

Chapter 6

Centering of the coil can be done with the weighing cell removed or installed. If the coil centering has been disturbed, the alignment of the cantilever arm must also be checked (see Section 3.3.2).

1815

1816

B

A

B

D

C

1.

Unplug sensor cable A from cell PCB.

2. 3.

Unscrew screws B (Torx M4 x 6). Rotate magnet cover C through 90°.

4.

Lift magnet cover off without touching guide D. Lift magnet cover with tweezers as shown in illustration.

D Close magnet coil in reverse sequence (steps 4-1).

0003

Repairs

Chapter

6.3.2

Chapter 6

Center coil =

• When the lever A is moved from side to side, the play X between the brass bushing B and the drilled hole in lever A must be equal on both sides. • When the lever A is lifted, it must not touch the brass bushing B.

=

C

C

E

E

Setting is done by moving the weighing cell on the magnet system F. 1.

F

A

D 1811

B

Undo screws C and D (Torx M4 x 25).

Note

Y

When undoing the screws C, do not touch the guide E.

X

2.

D

3. 4. 5. 6.

Move magnet system F until: • The brass bushing B is centered in the drilled hole in the lever (position X). • The lever A is centered relative to the magnet system F (position Y). Move the cell plate F until the brass bushing B is centered in the drilled hole in the lever (position X) Tighten screws C and D alternately and uniformly. Check play. Close magnet coil (see Section 6.3.1).

Repairs

6.4

Chapter

Chapter 6

Remove/install cell PCB WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ). Remove weighing cell (see Section 2.6) Y

Y

1.

Lift screening plate A out of lower guides X, lift slightly, pull toward front, and slide out.

2.

Insert hanger gages B at side between hanger and housing.

Note Insert hanger gage see Section 6.4.1.

X

3. A

1909 1910

B

C

B C

Fasten hanger with the two long gage screws C.

Repairs

Chapter

Chapter 6

4.

Unplug all cables from the cell PCB.

5. 6.

Unscrew and remove screws D from the scanner housing. Remove cell PCB E.

If the cell PCB E is replaced: • Unscrew and remove (brass) limit screw G and insert in new cell PCB. • Center new cell PCB symmetrically relative to lever Z.

1913

E

D

D

Z == 1807

G

Install cell PCB in reverse sequence to installation (steps 6 - 1).

Repairs

6.4.1

Chapter

Chapter 6

Insert hanger gage Attention When inserting the hanger gages, absolute precision is called for.

2246

• Grasp the hanger gage at the points provided for this purpose. • The nose X of the hanger gage must point «inward» and lie against the housing edge Y. • The two hanger gages must lie on one straight line Z. • If the hanger gage cannot be inserted, unscrew the rear screws on the upper and lower guides. • If the hanger gage cannot be inserted, slacken but do not remove the rear fastening screws on the upper and lower guides. Y

X

Z

2249

Repairs

Chapter

6.5

Chapter 6

Remove magnet system Remove weighing cell (see Section 2.6) 1. 2.

Lift screening plate A out of lower guides X, lift slightly, pull down and to the front, and slide out. Insert hanger gage B at side between hanger and housing.


X A

1909

D1

D1

D

D

B

B

C

C

1915

3. 4.

Fasten hanger with the two long gage screws C. Fasten hanging bearings with four short gage screws D and D1. Screw the upper two gage screws D1 in first.

Repairs

Chapter

E

5. 6. 7.

F

1919

G

H

J G

1921

Chapter 6

After fastening, turn the weighing cell upside down. Unscrew and remove the screws E (Torx M4 x 10) and lift off the cell plate F. Unscrew and remove the screws G (Torx M3 x 6) and lift off the lower screening plate H. Unthread the cable J. Do not damage the cable insulation by rubbing against edges.

Repairs

Chapter

8.

K

K X

K

Unscrew screws K (special screws with spring washers) and lift off lower guide. Warning Always hold the guide only at the points marked X in the illustration!

X L

Chapter 6

9.

Turn weighing cell over.

10.

Open magnet cover (see Section 6.3.1).

Note Do not unscrew the upper guide N. 11.

Loosen screws M (4 screws Torx M4 x 25 with washers). Do not damage the upper guide N.

12.

Lift pot magnet off weighing cell.

1923

Install pot magnet see Section 6.7 M N

M M

M

1926

Repairs

6.6

Chapter

Chapter 6

Clean magnetic system 1. 2.

Clean pot magnet. Clean coil.

Attach double-sided adhesive tape (see accessories) to one end of a strip of card (piece of a business card). Clean cavities. Never blow out or brush out with a brush. These methods do not remove magnetic particles.

1929

Repairs

Chapter

6.7

Install pot magnet

6.7.1

Procedure 1. 2.

M

M

3.

N

4. 5.

M M

1926

Place the weighing cell on the pot magnet. Position the pot magnet and screw in the screws M (4 Torx M4 x 25 with washers). Do not damage the upper guide N. Close the magnet coil (see Section 6.3.1). This protects the magnet coil against renewed soiling. Turn the weighing cell over. Place guide L in position. Tighten screws K (special screw with spring washer). Warning Always hold the guide only at the points marked X in the illustration!

Correctly tighten screw with locking ring and washer see Section 6.1.1.

K X L

K

K

X

1923

Chapter 6

Repairs

Chapter

6.

Thread cable J in. Place lower screening plate H in position and fasten with screws G (Torx M3 x 6). Do not damage cable insulation by rubbing on edges.

7.

Place cell plate F in position • Center both noses X laterally with the hanger Y (within the hole tolerance). • Align cell plate parallel to the edge Z on the screening plate H.

8. 9.

Fasten cell plate F with screws E (Torx M4 x 10). Place weighing cell on the cell plate.

10. 11.

Remove hanger gages. Open magnet coil again (see Section 6.3.1).

12. 13.

Center coil (see Section 6.3.2). Plug all cables onto the cell PCB.

G

H

J G

1921

E

X Z Y

F X

1919

Chapter 6

Repairs

7

Chapter

Chapter 6

Completely dismantle the weighing cell 7.1

Open weighing cell Remove weighing cell (see Section 2.6) 1.

Lift screening plate A out of the lower grooves X, lift slightly, pull bottom toward front and slide out.

2.

Insert hanger gage B at side between hanger and housing.


X

3. A

1909

D1

D1

D

D

B

B

C

C

1915

4.

Secure hanger with the two long gage screws C. Secure hanging bearings with four short gage screws D and D1. Screw the upper two gage screws D1 in first.

Repairs

Chapter

5. J

Chapter 6

Unscrew and remove screws J (special screw with spring washer) and lift guide K off. Warning Always hold the guide only at the points marked X in the illustration!

X J J K

J

X 1932

E

F

1919

6. 7.

Turn weighing cell over. Unscrew and remove screws E (Torx M4 x 8) and lift cell plate F off.

Repairs

Chapter

8.

Unscrew and remove screws G (Torx M3 x 6) and lift lower screening plate H off. Unthread cable J. Do not damage cable insulation by rubbing against edges.

9.

Unscrew and remove screws K (special screw with spring washer) and lift lower guide L off.

G

H

J G

Chapter 6

Warning Always hold the guide only at the points marked X in the illustration! Close weighing cell see Section 7.5.

1921

K X K

L

X

K

1923

Repairs

7.2

Chapter

Chapter 6

Remove hanger

C

A

B D

D A

1915

C

B 1937

1.

Unscrew and remove screws A (special screw, washer, locking ring). Coupling B remains in hanger C.

2. 3.

Unscrew and remove the two long gage screws D. Remove hanger C and remove the coupling B.

Insert hanger see Section 7.4.

Repairs

7.3

Chapter

Hanging bearings WARNING Only remove hanging bearings when: • replacing hanging bearings • replacing coupling • replacing lever.

7.3.1

Symptoms of a distorted hanging bearings or coupling

• Kinked, twisted, or bent hanging bearings usually cause hysteresis. • A kinked, twisted, or bent coupling usually causes linearity errors. • Bent guides often cause uncorrectable corner-load errors.

7.3.2

Chapter 6

Tips for replacing hanging bearings or couplings

• Deformed hanging bearings or couplings should always be replaced. • Always replace both hanging bearings. • Always install hanging bearings and coupling with special screw, locking ring, and washer at both ends (see Section 6.1.1). • Under no circumstances allow the hanging bearings to turn while turning the screw. • Never apply pressure to the hanging bearings or coupling (kinking). • After replacing the hanging bearings or coupling, and even after loosening and re-tightening one of its fastening screws, the corner load, repeatability, and linearity must be checked (see Section 8) and adjusted if necessary. • Adjust balance according to Operating Instructions.

Repairs

7.3.3

Chapter

Chapter 6

Remove hanging bearings Remove magnet system (see Section 6.5)

C

C

A

A

1. 2. 3. 4. 5.

Unscrew and remove screws A. Remove hanging bearings B. Unscrew and remove upper gage screws C. Pull lever D toward front and remove. Cut through the two contact wires between the lever PCB and the housing PCB. Remove hanger gage.

Install hanging bearings (see Section 7.3.4) 1940

B

D 1941

Repairs

Chapter

7.3.4

Chapter 6

Install hanging bearings 1.

0035

2. A 3.

Clean soldering eyelets on housing PCB and lever PCB with desoldering braid. Thread new contact wires A through housing PCB B and solder. Insert lever and contact wires through the solder eyelets on the lever PCB.

Note B

The lever must lie in the opening of the cell PCB Z without pinching on the stop screw. 1810

D

D Z

C

Y X

X C 4. 1948

5.

Insert the two hanger gages C (see Section 6.4.1). The gage hole X must line up with the threaded hole in the housing. Screw in the short gage screw D to fasten the hanger gage. Check with a ruler that both hanger gages are on a line Y.

Repairs

Chapter

2238

Chapter 6

6.

Slightly screw in the lower gage screw E. The level must only just be «hel».

7.

Screw the hanging bearings F onto the lever (lower fastening point) (special screw, locking ring, spring washer).

F

F

Note

E

E

• The two feet on the respective hanging bearings must lie parallel Z on the hanger gage (no light gap). • The holes must be in line. • Position the hanging bearings so they both bend in the same direction relative to their longitudinal axis.

Z

Z

8. 9.

1952

Screw in the gage screws E to fasten the lever. Using the special screw, locking ring, spring washer, screw the hanging bearings F onto the upper fastening point of the housing G.

Note Correctly tighten screw with locking ring and washer see Section 6.1.1.

G G

Repairs

7.4

Chapter

Insert hanger 1959

A

Chapter 6

X

B

E1

1.

Lay the hanger A on the hanger gage, push upward as far as the stop, and center X the nose B of the lever.

2. 3.

Fasten the hanger with the long gage screws C. Lift coupling D with tweezers and push under bridge of hanger. • The punched edge of the coupling must face inward. • Both feet of the coupling must be at the bottom of the hanger. • The elongated hole must be aligned with the upper threaded hole E2.

4.

Center the coupling on the two threaded holes E1 and E2.

5.

Screw in the upper screw F1. • The upper hole must stay centered on the threaded hole.

6. 7.

Screw in the lower screw F2. Unscrew and remove the upper screw F1. • Check centering of lower drilled hole

8.

Screw in upper screw F1.

C

C

E2

1960

F1

Note Correctly tighten screw with locking ring and washer see Section 6.1.1.

D

F2

Repairs

7.5

Chapter

Chapter 6

Close weighing cell 1.

Place weighing cell on pot magnet.

Note M

The magnet system must be clean (see Section 6.6). 2.

Position pot magnet and screw in screws M (4 Torx M4 x 25 with washers). Only screw screws in slightly, do not tighten. Do not damage upper guide N.

3.

Close magnet coil (see Section 6.3.1). Magnet coil is protected against renewed soiling. Place upper guide N into position.

N

M M

M

4.

Warning Always hold the guide only at the points marked X in the illustration!

1926

5.

Screw in screws J (special screw with spring washer) and fasten upper guide N.

Note X J N

J J

X

1932


Repairs

Chapter

6. 7.

K

8. K

L

Chapter 6

Turn weighing cell over. Place lower guide L in position. Tighten screws K (screw and locking ring). Thread in cable O. Place lower screening plate P in position and fasten with screws Q (Torx M3 x 6). Do not damage cable insulation by rubbing on edges.

Note

K


1923

Q

P

O Q

1921

Repairs

Chapter

9.

Place cell plate R in position. • Center both noses X laterally to the hanger Y (within the hole tolerance). • Align cell plate parallel to the edge Z on the screening plate P.

10.

Fasten cell plate R with screws S (Torx M4 x 10).

11.

Stand weighing cell on the cell plate again and remove hanger gages.

12.

Open magnet coil again (see Section 6.3.1).

13. 14. 15.

Center coil (see Section 6.3.2). Close magnet coil (see Section 6.3.1). Solder contact wires to lever PCB T.

S

X Z Y

R X

1919

Chapter 6

Note

T

1965

The contact wires must be laid between the lever PCB and the housing PCB in as wide a curve as possible. The wires must not: - be laid kinked - touch the housing - be under excessive tension.

Repairs

Chapter

V

U

1966

Chapter 6

16. 17.

Install front screening plate U. Install upper screening plate V (Torx M3 x 6).

18.

Plug all cables onto the cell PCB.

Repairs

8

Chapter

Mechanical adjustment of the balance 8.1

Check hysteresis

1.

Place weight (see Section 2, Chapter 9) on pan and remove again. Read display value. Repeat operation about 3 times and then tare. Touch key.

2.

Use a brush to press the weighing pan down lightly (minimum load) and then release. Read display value. Repeat operation about 3 times.

If the difference from the previous (Step 1) taring is greater than ± 0.1 mg, the weighing cell must be inspected for mechanical damage or dirt in the magnet system (see Section 6.6).

Chapter 6

Repairs

Chapter

8.2

Corner load

8.2.1

Check corner load

Chapter 6

Note -10

All references to position assume that the technician is viewing the balance from the direction of the terminal. The draft shield must be closed for all weighing operations. 0

+3

1.

Place the test weight in the center of the weighing pan and tare. Touch key. Test weight according to tolerance table (see Section 2, Chapter 9).

2.

Move the weight successively to the left, front, back, and right edges of the weighing pan and each time note/print display values deviating from zero with their sign.

3.

Compare display values with tolerance «corner load» (Chapter 9, see Section 1). If difference from tolerance is greater than 0.1 g, the weighing cell must be inspected for mechanical damage or dirt in the magnet system (see Section 6.6).

-2 +7

Eckenlast

What to adjust when Coarse adjustment: when deviation to tolerance is >5mg (see Section 2, Chapter 9). For coarse adjustment procedure see Section 8.5. Fine adjustment: when deviation to tolerance is <5mg (see Section 1, Chapter 9). For fine adjustment procedure see Section 8.2.2.

Repairs

8.2.2

Chapter

Chapter 6

Fine-adjust corner load Remove side walls of housing (see Section 2.3). 1.

Remove plastic plugs A on both sides.

2.

Check corner load (see Section 8.2.1).

3.

Correct deviations to tolerance (see Section 1, Chapter 9) according to the opposite pictures. • Correction is done by turning the two adjustment screws with a socket wrench SW 3.5

4.

Insert plastic plugs A on both sides.

A 2227

Repairs

Chapter

8.3

Check/adjust dead load

8.3.1

Check dead load 1. 2. 3.

Chapter 6

Enter Service Mode (see Section 3.1, Chapter 7). Level balance, adjust, and call up the dead load with key A (in Service Mode) Note value.

The value of the dead load must lie in a specified range which depends on the respective balance type. Type

Dead load range

XS64B XS104B XS105BDU XS204BDR XS204B XS205BDU

+8 g - +16 g +8 g - +16 g +8 g - +16 g +8 g - +16 g +8 g - +16 g +8 g - +16 g

Repairs

8.3.2

Chapter

Chapter 6

Adjust dead load WARNING The dead load must be adjusted with the draft shield partly in place ( see Section 8.4.1 ). The top glass cannot be inserted, and must be re placed by a temporary cover. Place terminal next to balance (see Section 1.1). Dismantle draft shield (see Section 2.2). Open Housing (see Section 2.3). • Do not remove bottom plate. Remove balance PCB (see Section 2.4). • Do not unplug cable. IIf the dead load is too high, more weight must be applied to lever A at the back. 1913

A

B

If the dead load is too low, weight must be removed from lever A at the back. Notes • Only the non-magnetic screws and washers from the «Deadload Screws» set may be used (see Section 5.2, Chapter 3). • The screw B may be left out at the factory, or there may be screws in both threaded holes.

Repairs

Chapter

8.4

Check/adjust levelness

8.4.1

Level zero-point

Chapter 6

WARNING The level zero-point must be checked and adjusted with the draft shield partly in place (side glasses and front glass). The top glass cannot be inserted, and must be re placed by a temporary cover. Place terminal next to balance (see Section 1.1). Dismantle draft shield(see Section 2.2). Open Housing (see Section 2.3) • Do not remove bottom plate. Loosen balance PCB only (see Section 2.4) • Push balance PCB toward back. 1. 2. 2223

A

Level balance. Temporarily assemble draft shield.

Repairs

Chapter

2223

A

Chapter 6

3.

Tare balance with unloaded weighing pan.

4.

Lift balance at front and insert 0.5 mm shim A (metal ruler) under the front foot.

5.

6.

Make correction by turning socket-head screw B. Tolerance values according to tolerance table (see Section 2, Chapter 9). • If the display value is negative (-), the socket-head screw must be screwed in. • If the display value is positive (+), the socket-head screw must be screwed out. One turn corresponds to approximately 0.5 mg. Remove shim A.

7.

Tare balance again with unloaded weighing pan.

Repeat this procedure (Steps 5 - 7) until the display lies within the tolerance values.

B

2033

Repairs

8.4.2

Chapter

Chapter 6

Check level sensitivity WARNING The level sensitivity must be checked and adjusted with the draft shield partly in place ( see Section 8.4.1 ). The top glass cannot be inserted, and must be re placed by a temporary cover. 1. 2.

3. 4.

2223

A

Level balance. Place test weight in center of weighing pan and tare. Press key. Test weight according to tolerance table (see Section 2, Chapter 9). Lift balance at front and insert 0.5 mm shim A (metal ruler) under the front foot. Read displayed value. If outside tolerance, correct as follows: • If display negative (-), turn both leveling feet clockwise. • If display positive (-), turn both leveling feet counterclockwise. One turn of the leveling feet corresponds to approximately 0.7 mg.

Note If the display value lies outside the tolerance, the cover of the level indicator must be removed before the two leveling feet are adjusted (see Section 8.4.3).

Repairs

8.4.3

Chapter

Chapter 6

Adjust/replace level indicator 1.

Unhook weighing pan.

B

2. 3. 4.

Tilt balance to one side. Unscrew and remove leveling foot. Unscrew and remove screws A and remove cover B.

A

5. 6.

Screw in leveling foot. Lay auxiliary level indicator on bottom plate.

7.

Level balance until the air bubble of the auxiliary level indicator is in the center. Fasten new level indicator with 3 screws C.

8. 9.

2037

C C

2039

Screw in the 3 screws C equally by approx. 3 mm so that the air bubble of the level indicator lies exactly in the center.

Repairs

8.5

Chapter

Chapter 6

Coarse-adjust corner load WARNING Danger from electric current. The operations described below are performed with the balance open and switched on.

8.5.1

Preparation Unplug terminal from balance (see Section 1.1) (only during preparatory work) Dismantle draft shield (see Section 2.2). Open Housing (see Section 2.3). Remove adjustment weights (see Section 2.5.1). 1. 2.

Insert bottom plate A and fasten with screws (see Section 3.5.3). Hang weighing pan B.

3.

Connect terminal C.

4.

Protect weighing area from external influences (wind) according to the opposite picture. If possible, Temporarily assemble draft shield (see Section 8.4.1).

5.

Expose weighing cell (see Section 8.5.2).

B A C 2224

2612

Repairs

Chapter

8.5.2

Chapter 6

Expose weighing cell WARNING Electrostatically damageable components. Always use antistatic kit when working on electronic components ( see Section 2.1 ).

A 2202

E D

D B

C

2205

1.

Lift screening A of balance PCB up and off.

2. 3. 4.

Unplug ribbon cables B and C. Unscrew and remove screws D (Torx M4 x 6). Lift off electro-chassis E together with balance PCB.

Repairs

Chapter

G F

H

1801

2232

B

C

Chapter 6

5.

Unscrew and remove screws F (Torx M4 x 6).

6. 7.

Remove rear wall G. Lift screening H up and off. Do not damage ribbon cables.

8. 9. 10.

Plug ribbon cables B and C onto balance PCB. Lay balance PCB next to balance. Temporarily assemble draft shield (see Section 8.4.1).

11. 12.

Connect AC adapter to balance and power supply. Switch on balance.

Repairs

Chapter

8.5.3

Chapter 6

Coarse adjustment 1.

Check corner load (see Section 8.2.1).

2. 3.

Screw in adjusting screw A lightly, but do not tighten. Loosen screws B on both sides of the weighing cell and leave loosely in position. Screw the fine adjustment screw C in/out until the lever and the chassis are aligned.

4.

o.k. fault

fault

2002

A

C B 2000

2613

2004

Repairs

Chapter

5.

Chapter 6

Correct deviations from rough tolerance (see Section 2, Chapter 9) according to the illustrations at left. Correct by turning the two adjusting screws A.

Note If the corner load cannot be corrected by turning the adjusting screws, the parallel guide of the chassis must be pushed upward. Unscrew and remove adjusting screws A. Insert screwdriver into slot and carefully force apart. Note The corner-load lever breaks very easily. Force apart carefully!

6.

Check corner load (see Section 8.2.1). Use temporary draft-shield top (see Section 8.5.1).

Repeat steps 4 and 5 as often as necessary until the values of the corner load lie within the coarse tolerance (see Section 2, Chapter 9).

Repairs

Chapter

7. 8.

Chapter 6

Tighten screws B alternately. Remove adjusting screws A.

9. B

Turn screws C for fine-adjustment of corner load to central position. 10. Assemble balance except for the two halves of the housing. • Install balance PCB (see Section 3.4). • Insert adjustment weights (see Section 3.3.3). • Close housing (without the two halves of the housing) (see Section 3.5). • Assemble draft shield (see Section 3.6 ).

A

11. 2004

2244

C

Fine-adjust corner load C (see Section 8.2.2).

LARS

7

Chapter

Chapter 7

LARS List of contents 1

Testing and Adjusting with LARS . . . . 7-2

5

Software Handling. . . . . . . . . . . . . . . . 7-12

1.1 1.1.1 1.1.2 1.1.3 1.1.4

Install LARS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Software-Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3 Software installation from diskette. . . . . . . . . . . . . . . 7-3 Software download from the Internet. . . . . . . . . . . . . 7-4 Software-Installation . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

5.1 5.1.1 5.1.2

e-loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12 Print out the customers settings . . . . . . . . . . . . . . . 7-12 Software faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12

5.2

Data on the balance PCB . . . . . . . . . . . . . . . . . . . 7-12

5.3

Data on the terminal PCB. . . . . . . . . . . . . . . . . . . 7-13

5.4

Change of hardware also affects software. . . . . 7-14

5.5

Change of software also affects other software 7-15

5.6

5.6.2

Allocation of the type definition numbers TDNR to the balance types . . . . . . . . . . . . . . . . . . . . . . . . . 7-16 Explanation of the type designations of the TDNR list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16 Structure of the TDNR . . . . . . . . . . . . . . . . . . . . . . 7-16

5.7 5.7.1 5.7.2

TDNR List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17 TDNR Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17 TDNR Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

2

Waage an Laptop/PC anschliessen . . . 7-6

3

Start/end Service Mode and LARS. . . . 7-7

3.1

Start/end Service Mode on balance . . . . . . . . . . . . 7-7

3.2

Start/quit LARS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8

5.6.1

4

Working with LARS . . . . . . . . . . . . . . . . 7-9

4.1

Load type data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10

LARS

1

Chapter

Testing and Adjusting with LARS LARS = LabTec Repair and Service Software

1.1

Install LARS WARNING Before you install LARS from the ServiceExpert CD or the enclosed diskettes, please check on the LMS home page whether you have the latest version of the LARS software.

Make sure that you have authorization to perform software installations on your laptop/PC. If you do not have this authorization, ask your system supporter to install the software for you.

Chapter 7

LARS

Chapter

1.1.1

Chapter 7

Software-Check A

1.

Double-click on

2.

Click on «Help» A and then on «Info».

.

The About LARS window opens. The currently installed version is displayed B. B

If the installed software is not the current version (Internet), the new version must be installed on the laptop/PC. New software versions are available: • on diskettes (see Section 1.1.2) which can be obtained from your service organization • on the Internet (see Section 1.1.3).

1.1.2

Software installation from diskette 1. 2.

Insert diskette 1 into the drive. In Windows, click on Start and then Execute.

3.

Type A:\SETUP and click OK.

Then follow the instructions of the installation program.

LARS

Chapter

1.1.3

Chapter 7

Software download from the Internet 1.

A

2. 3. 4.

Click on the link http://extranet.mt.com (Labtec Market Support). Click on LabTec Market Support A. Enter user name and password B. Click on software and then on LARS software C. The most recent version of the LARS software is shown at the top of the list D.

C

5.

Select the link of the software version you wish to download.

6.

Click on Open E.

7.

The storage location F is displayed. This can be accepted (recommended), or selected according to your own system organization.

8.

Click on Unzip G. The individual files are saved in the selected storage location.

9.

Click on OK H. Close the WinZip window.

B

D

G

E

F

H

LARS

Chapter

1.1.4

Chapter 7

Software-Installation 1.

Open the METTLER TOLEDO folder.

2.

Open the LARSsetup Disk1 folder.

3.

Klick on

icon.

The installation procedure now starts. Follow the instructions of the installation program.

LARS

2

Chapter

Chapter 7

Waage an Laptop/PC anschliessen 1. 2.

Switch off balance and Laptop/PC.

Connect the balance by means of a RS9–RS9 cable to the serial port COM of the Laptop/PC 3. Connect the hardlock LARSLOCK to the parallel port LPT of the Laptop/PC. Part No. for LARS software, LARSLock and RS9– RS9-Cabel (see Chapter 11).

LARS

3

Chapter

Chapter 7

Start/end Service Mode and LARS 3.1

Start/end Service Mode on balance Select Service Mode

2308

A

1.

Remove securing sticker A (only present on certified balances).

2. 3.

Press red certification key B. Answer security question.

The balance is now in Service Mode and displays the service resolution (double). The filters are changed over to the service settings. The weight is displayed in g, mg, µg.

B

The individual menu items are described in Chapter 8.

WaagenInfo

Setup

User2

Waagen-ID . . den . . . Servicemode .... X-3582 Wollen Sie in einsteigen?

WaagenInfo . . . . . . . . .

!

Zeigen

C

1/1 1/3

OK

OK

Exit from Service Mode 4. 5.

In Service Mode, touch the Exit key. Restart the balance.

LARS

Chapter

3.2

Chapter 7

Start/quit LARS To start 1.

Double-click on The LARS menu window appears. All further work with LARS is selected in the various popup menus (see Section 4).

To quit 1.

In the File menu, select the Quit command. The stored data of the balance are backed up in the selected file and are available for a future service.

LARS

4

Chapter

Chapter 7

Working with LARS If you still have insufficient knowledge of the LARS functions, it is advisable to press the F1 Help key. The Help window shown at left then appears: A

• B shows the steps which are generally necessary for service with LARS. • Double-clicking on the balance type A shows in an additional window the special service procedure for the selected balance. The Help key F1 can be pressed again for each operation. The Help function explains the current situation.

B

LARS

Chapter

4.1

Chapter 7

Load type data

If a new main board has been installed in the balance, a new type definition must be loaded. Note The TDNR on the black laser label A should not be used before being tested.

2315

A

Software or hardware changes may make it necessary to adjust the TDNR in line with the new functionalities too.

2318

Where this is the case, the new TDNR and the new software version must be entered in the relevant service label B. This prevents errors and facilitates searches for the correct TDNR if they can no longer be read from the balance. Service Data Plate see Chapter 11

B

1865 1864

LARS

Chapter

Chapter 7

Searching by TDNR 1.

From the Data menu, select the Type Definition command.

2.

Enter the appropriate TDNR in the «TDNR» field in the «Load type definition» dialog field. Click on Load and follow the instructions.

3. Note

You can obtain specific information by clicking the Help button or pressing the F1 key. Searching by type 1.

Select the «type definition» command from the «data» menu.

2.

Enter the type definition from the black laser label in the «type» field in the «Load type definition» dialog field.

Note Use the type definition for the bridge (e.g. x205BDU/A) or the terminal (e.g. SAT) not the definition for the complete balance (e.g. XS205DU). 3.

Click on Load and follow the instructions.

LARS

5

Chapter

Chapter 7

Software Handling WARNING Before replacing the balance or terminal software, the customer settings must always be saved.

5.1

e-loader

Customer settings must be printed out, and then input to the balance by hand after the update has been completed.

5.1.1

Print out the customers settings

1. 2.

Select user Open menu settings

3.

Touch Print key Menu settings are printed

4. 5.

Select System menu Touch Print key Menu settings are printed Select next user

6. 7.

Repeat steps 2 to 6 until the desired settings have been printed for all users.

5.1.2

Software faults

Especially when a software update takes place because of a software fault, it is not allowed to use the e-loader functions "Save data from XS balance in file ..." and "Restore data for XS balance from file ...". Only if these functions are not used can fault-free operation of the balance after a software update be assured.

5.2

Data on the balance PCB

IIn cell data EAROM (plugged in, shipped with the new measuring cell) • cell data: created only during factory adjustment • adjustment data (Lin, Cal, StdCal) created during factory adjustment or service In TDNR EAROM (permanently soldered) • TDNR data: loaded with LARS from the LMS home page http://support.mt.com, LabTec Market Support

LARS

Chapter

In flash memory • balance software or application: loaded with LARS or e-loader from the Internet into the balance, for users www.mt.com/xs for service technicians http://support.mt.com, LabTec Market Support. Balance adjustments and customer settings are retained. In RAM (battery supported) • customer settings, date and time, balance ID: backup and restore with e-loader or set up by hand.

5.3

Data on the terminal PCB

In flash memory • Terminal software: Update with LARS or e-loader. Next time the balance and terminal are switched on, they automatically synchronize their settings (can take several minutes). • Terminal replaced: Next time the balance and terminal are switched on, t hey synchronize their settings automatically (can take several minutes).

Chapter 7

LARS

Chapter

5.4

Chapter 7

Change of hardware also affects software

Changed hardware

What changes must be made to the software? Cell data

Balance PCB

Adjustment

TDNR

Balance softTerminal software and appli- ware cations

Transfer cellNot necessary. data EAROM Load Load software from old balance Adjustment data (see Section 4.1) (see Section 4) is on EAROM. PCB

Customer settings

Automatic synchronization with Load from safe (see Section 5). balance software when newly Input by hand. started.

Cell PCB Replace the existing EAROM with the EAROM Measuring cell delivered with the new measuring cell.

Check LIN, StdCAL, and CAL, and adjust if necessary.

Terminal PCB -

-

-

Load (see Section 4.1)

-

-

Load software (with e-loader)

-

LARS

Chapter

5.5

Chapter 7

Change of software also affects other software

Changed hardware

What changes must be made after the software is changed? Cell data

Adjustment

TDNR

Balance softTerminal software and appli- ware cations

Customer settings

Cell data EAROM

Check LIN, StdOriginal cell data CAL, and CAL, as shipped and adjust if necessary

-

-

-

TDNR

-

-

-

-

-

-

New features, applications, or languages

If recommended by PO LabTec, replace terminal software. Check compatibility.

-

-

-

Balance, software, and application

-

-

-

-

-

-

If recommended by PO LabTec, New features or replace balance bug fixes. software. Check compatibility.

Customer settings

-

-

-

Terminal software

-

LARS

Chapter

5.6

Allocation of the type definition numbers TDNR to the balance types

5.6.1

Explanation of the type designations of the TDNR list

XS204DR/A Certified Balance DeltaRange Capacity/Readability Type

5.6.2

Structure of the TDNR

3.6.3.121.48 Kundenspezifisch Sortimentspezifisch Qualität Zelle Zelle Hardware

Chapter 7

LARS

Chapter

5.7

TDNR List

5.7.1

TDNR Balance

Balance-Type

TDNR

X104B

9.6.5.403.150

X105BDU

9.6.3.402.149

X204B

9.6.5.400.148

X204BDR

9.6.7.401.148

X205BDU

9.6.3.399.147

X64B

9.6.7.404.150

5.7.2

Balance-Type

TDNR

Balance-Type

TDNR

TDNR Terminal

Balance-Type

TDNR

SAT

10.28.0.389.142

Chapter 7

Adjusting in the Service Menu

8

Chapter

Adjusting in the Service Menu List of contents 1

Note. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Chapter 8

Adjusting in the Service Menu

1

Chapter

Note This chapter is in preparation. As soon as the chapter chapter is complete, it will be published at http://extranet.mt.com LabTec Market Support, Service Manual, XS. The first XS balances to be shipped have no service menu. Service information is only inquired and processed via LARS. However, to work with LARS, the balance must be put into Service Mode (see (see Sect Section ion 3.1 3.1). ).

Chapter 8

Adjustment Data

9

Chapter

Adjustment Data List of contents 1

Adjustment data . . . . . . . . . . . . . . . . . . 99-2

2

Adjustment tolerance . . . . . . . . . . . . . . 9-3

Chapter 9

Adjustment Data

1

Chapter

Chapter 9

Adjustment data Balance Data

Excentricity *

Type Range Class

Capacity Readability d e

Refer. Weight Tolerance ±

XS64B 1 I

61 g 0.1 mg 1 mg

20 g

XS104B 1 I

120 g 0.1 mg 1 mg

XS204BDR 1 I XS204B 1 I

220 g 0.1/0.01 mg 1 mg 220 g 0.1 mg 1 mg

XS105BDU 1 I

120 g 0.1/0.01 mg 1 mg

XS205BDU 1 I

220 g 0.1/0.01 mg 1 mg

0.3 mg 50 g 0.3 mg 100 0.3 mg 100 g 0.3 mg 50 0.3 mg 100 g 0.3 mg

Repetability (max. Weight) e d o h t e M

Refer. Weight Measurements Stabw. Max.

Repetability (min. Weight) e d o h t e M

Refer. Weight Measurements Stabw. Max.

Linearity e d o h t e M

Span

Preload Refer. Weight Tolerance ±

e d o h t e M

Refer. Weight Class Tolerance ±

20 g 10 0.1 mg

10 g 10 0.07 mg

20 g 20 g 0.2 mg

50 g E2 0.2 mg

50 g 10 0.1 mg

10 g 10 0.07 mg

20 g 20 g 0.2 mg

100 g E2 0.4 mg

100 g 10 0.7 mg

10 g 10 0.1 mg

50 g 50 g 1 mg

200 g E2 0.8 mg

100 g 10 0.1 mg

10 g 10 0.07 mg

50 g 50 g 0.2 mg

200 g E2 0.8 mg

50 g 10 0.1 mg

10 g 10 0.02 mg

20 g 20 g 0.2 mg

100 g E2 0.04 mg

100 g 10 0.1 mg

10 g 10 0.02 mg

50 g 50 g 0.2 mg

200 g E2 0.8 mg

* If the corner load error is >5mg, > 5mg, a coarse adjustment must be done see Sect Section ion 8.5 8.5,, Ch Chap apte terr 6

e d o h t e M

Adjustment Data

2

Chapter

Chapter 9

Adjustment tolerance Balance Data

Excentricity

Type Range Class

Capacity Readability d e

Tolerance ±

XS64B 1 I

61 g 0.1 mg 1 mg

>5mg

XS104B 1 I

120 g 0.1 mg 1 mg

>5mg

220 g 0.1/0.01 mg 1 mg

>5mg

220 g 0.1 mg 1 mg

>5mg

XS105BDU 1 I

120 g 0.1/0.01 mg 1 mg

>5mg

XS205BDU 1 I

220 g 0.1/0.01 mg 1 mg

>5mg

XS204BDR 1 I XS204B 1 I

Hysterese e d o h t e M

Refer. Weight Tolerance ±

Dead Load e d o h t e M

Zero point deviation von bis

12 g 4g 12 g 4g 12 g 4g 12 g 4g 12 g 4g 12 g 4g

e d o h t e M

Refer. Weight Front/Back Left/Right

Sensitivity deviation e d o h t e M

Refer. Weight Front/Back Left/Right

0g ±1 mg ±1 mg

50 g 0 - 1 mg 0 - 1 mg

0g ±1 mg ±1 mg

100 g 0 - 1 mg 0 - 1 mg

0g ±1 mg ±1 mg

200 g 0 - 1 mg 0 - 1 mg

0g ±1 mg ±1 mg

200 g 0 - 1 mg 0 - 1 mg

0g ±1 mg ±1 mg

200 g 0 - 1 mg 0 - 1 mg

0g ±1 mg ±1 mg

200g 0 - 1 mg 0 - 1 mg

e d o h t e M

Accessories

10

Chapter

Accessories List of contents 1

Note. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

1.1 1.1.1 1.1.2 1.1.3

Frequently used accessories . . . . . . . . . . . . . . . . 10-2 Protectiv Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2 Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2 Further accessories. . . . . . . . . . . . . . . . . . . . . . . . . 10-2

Chapter 10

Accessories

1

Chapter

Chapter 10

Note Accessories for the XS balances are listed in the «Technical Data and Accessories» chapter of the Operating Instructions. All information required for ordering accessories will be found there. The Operating Instructions are on the LAB service-expert CD or at http://extranet.mt.com LabTec Market Support.

1.1

Frequently used accessories

1.1.1

Protectiv Cover

Designation Protectiv Cover Terminal

1.1.2

Designation

Note

Power supply Line cable

Part No. 11106870

Power supply

1.1.3

Part No. 11106930

DK GB USA AUS SA EU (Schuko) CH I

87452 89405 88668 88751 89728 87925 87920 87457

Further accessories

All accessories are listed in the Operating Instructions in the chapter Technical Data and Accessories.

Service Aids

11

Chapter

Service Aids List of contents 1

Service Aids . . . . . . . . . . . . . . . . . . . . . 11-2

1.1

LARS Software, connection cable computer-balance and interface RS232 . . . . . . . 11-2

1.2

ESD Service kit . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

1.3

Mounting Gauges . . . . . . . . . . . . . . . . . . . . . . . . . 11-3

Chapter 11

Service Aids

1

Chapter

Chapter 11

Service Aids 1.1

LARS Software, connection cable computer-balance and interface RS232 LARS diskettes and LARSLock, Part No. 11107505

ServiceExpert CD, Part No. 11780410

RS9 – RS9 connection cable for balance – PC, 1m m/f, Part No. 11101051

Service Aids

1.2

Chapter

ESD Service kit ESD Service-kit Part No. 11600009

1.3

Mounting Gauges B

C

XS Mounting Gauges set Part No. 11106805

D 2312

E

A

Consisting of: 2 Hanger gages A 2 Long gage screw B 2 Short gage screw C 2 Adjusting screm D 2 Pin E

Chapter 11

Service Aids

1.4

Chapter

Service Data Plate Service Data Plate Part No. 11106832

Chapter 11

Document History

12

Chapter

Document History List of contents 1

Document Status . . . . . . . . . . . . . . . . . 12-2

2

Software Status . . . . . . . . . . . . . . . . . . 12-3

2.1

Balance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3

2.2

Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3

Chapter 12

Document History

1

Chapter

Document Status Document number

Date of change

Changed pages

Short description of change

11780583 8.12

9/2003

-

First edition

11780583A 8.12

12/2003

Chapter 3 Page: 3-2 - 3-11

New order numbers

11780583B 8.12

03/2003

-

Complete revise

Chapter 12

Servicemanual Mettler Toledo XS Analytical Balances: Chapte r

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