LG+32LN5100+Ch+LL35B.pdf

Internal Use Only North/Latin America Europe/Africa Asia/Oceania

http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com

LED TV SERVICE MANUAL CHASSIS : LL35B

MODEL : 32LN5100

32LN5100-MB

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL67697601 (1304-REV00)

Printed in Korea

CONTENTS

CONTENTS . ............................................................................................. 2 SAFETY PRECAUTIONS ......................................................................... 3 SERVICING PRECAUTIONS..................................................................... 4 SPECIFICATION........................................................................................ 6 ADJUSTMENT INSTRUCTION................................................................. 9 BLOCK DIAGRAM................................................................................... 13 EXPLODED VIEW .................................................................................. 14 SCHEMATIC CIRCUIT DIAGRAM ..............................................................

Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes

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LGE Internal Use Only

SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Exploded View. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.

General Guidance

Leakage Current Hot Check (See below Figure) Plug the AC cord directly into the AC outlet.

An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation. If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with the specified. When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1 W), keep the resistor 10 mm away from PCB. Keep wires away from high voltage or high temperature parts.

Do not use a line Isolation Transformer during this check. Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor between a known good earth ground (Water Pipe, Conduit, etc.) and the exposed metallic parts. Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms/volt or more sensitivity. Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to 0.5 mA. In case any measurement is out of the limits specified, there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer.

Leakage Current Hot Check circuit

Before returning the receiver to the customer, always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc., to be sure the set is safe to operate without damage of electrical shock.

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc. If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1 MΩ and 5.2 MΩ. When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer.


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SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First. General Servicing Precautions 1. Always unplug the receiver AC power cord from the AC power source before; a. Removing or reinstalling any component, circuit board module or any other receiver assembly. b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection. c. Connecting a test substitute in parallel with an electrolytic capacitor in the receiver. CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc) equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc". 3. Do not spray chemicals on or near this receiver or any of its assemblies. 4. Unless specified otherwise in this service manual, clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable non-abrasive applicator; 10 % (by volume) Acetone and 90 % (by volume) isopropyl alcohol (90 % - 99 % strength) CAUTION: This is a flammable mixture. Unless specified otherwise in this service manual, lubrication of contacts in not required. 5. Do not defeat any plug/socket B+ voltage interlocks with which receivers covered by this service manual might be equipped. 6. Do not apply AC power to this instrument and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed. 7. Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead. Always remove the test receiver ground lead last. 8. Use with this receiver only the test fixtures specified in this service manual. CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver. Electrostatically Sensitive (ES) Devices Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the unit under test. Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static type solder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.) General Soldering Guidelines 1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 °F to 600 °F. 2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40 parts lead. 3. Keep the soldering iron tip clean and well tinned. 4. Thoroughly clean the surfaces to be soldered. Use a mall wirebristle (0.5 inch, or 1.25 cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners. 5. Use the following unsoldering technique a. Allow the soldering iron tip to reach normal temperature. (500 °F to 600 °F) b. Heat the component lead until the solder melts. c. Quickly draw the melted solder with an anti-static, suctiontype solder removal device or with solder braid. CAUTION: Work quickly to avoid overheating the circuit board printed foil. 6. Use the following soldering technique. a. Allow the soldering iron tip to reach a normal temperature (500 °F to 600 °F) b. First, hold the soldering iron tip and solder the strand against the component lead until the solder melts. c. Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil. CAUTION: Work quickly to avoid overheating the circuit board printed foil. d. Closely inspect the solder area and remove any excess or splashed solder with a small wire-bristle brush.

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IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above. Removal 1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts. 2. Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC. Replacement 1. Carefully insert the replacement IC in the circuit board. 2. Carefully bend each IC lead against the circuit foil pad and solder it. 3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas). "Small-Signal" Discrete Transistor Removal/Replacement 1. Remove the defective transistor by clipping its leads as close as possible to the component body. 2. Bend into a "U" shape the end of each of three leads remaining on the circuit board. 3. Bend into a "U" shape the replacement transistor leads. 4. Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact then solder each connection. Power Output, Transistor Device Removal/Replacement 1. Heat and remove all solder from around the transistor leads. 2. Remove the heat sink mounting screw (if so equipped). 3. Carefully remove the transistor from the heat sink of the circuit board. 4. Insert new transistor in the circuit board. 5. Solder each transistor lead, and clip off excess lead. 6. Replace heat sink. Diode Removal/Replacement 1. Remove defective diode by clipping its leads as close as possible to diode body. 2. Bend the two remaining leads perpendicular y to the circuit board. 3. Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board. 4. Securely crimp each connection and solder it. 5. Inspect (on the circuit board copper side) the solder joints of the two "original" leads. If they are not shiny, reheat them and if necessary, apply additional solder.

3. Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered. At IC Connections To repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections). 1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary). 2. carefully scratch away the solder resist and acrylic coating (if used) from the end of the remaining copper pattern. 3. Bend a small "U" in one end of a small gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection. 4. Route the jumper wire along the path of the out-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area and clip off any excess jumper wire. At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board. 1. Remove the defective copper pattern with a sharp knife. Remove at least 1/4 inch of copper, to ensure that a hazardous condition will not exist if the jumper wire opens. 2. Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern. 3. Connect insulated 20-gauge jumper wire from the lead of the nearest component on one side of the pattern break to the lead of the nearest component on the other side. Carefully crimp and solder the connections. CAUTION: Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges.

Fuse and Conventional Resistor Removal/Replacement 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top.


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SPECIFICATION

NOTE : Specifications and others are subject to change without notice for improvement.

1. Application range

3. Test method

This specification is applied to the LL35B chassis.

1) Performance: LGE TV test method followed 2) Demanded other specification - Safety : CE, IEC specification - EMC : CE, IEC

2. Requirement for Test

Each part is tested as below without special appointment. (1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 5 °C (2) Relative Humidity: 65 % ± 10 % (3) Power Voltage : Standard input voltage (AC 100-240 V~, 50/60 Hz) * Standard Voltage of each products is marked by models. (4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM. (5) The receiver must be operated for about 5 minutes prior to the adjustment.

4. Model General Specification

* HDMI 1.4 with Deep Color is only apply for FHD Model

No.

Item

Specification

1.

Market

Central and South America

2.

Broadcasting system

NTSC, PAL-M, PAL-N BAND

Available Channel

VHF

02~13

UHF

14~69

CATV

01~125

Remarks

3.

Channel Storage

4.

Receiving system

Upper Heterodyne

5.

Video Input

NTSC, PAL-M/N

Rear (2EA)

6.

Component Input

Y/Cb/Cr, Y/ Pb/Pr

Rear (1EA)

7.

USB Input

MP3, JPEG,Movie

Side(1EA)

8.

AV Audio Output

RF/AV/HDMI Audio Output

Rear (1EA)

9.

D-SUB INPUT

S/W Upgrade Only

Rear (1EA)

10.

HDMI Input

HDMI-DTV, Only PCM MODE

Rear (2EA)

11.

Audio Input (1EA)

AV&Component

L/R Input(2EA)


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5. Component Video Input (Y, PB, PR) No.

Resolution

H-freq(kHz)

V-freq(Hz)

Pixel clock(MHz)

Proposed

1.

720*480

15.73

59.94

13.500

SDTV, DVD 480I(525I)

2.

720*480

15.75

60.00

13.514


3.

720*576

15.625

50.00

13.500

SDTV, DVD 576I(625I) 50Hz

4.

720*480

31.47

59.94

27.000

SDTV 480P

5.

720*480

31.50

60.00

27.027

SDTV 480P

6.

720*576

31.25

50.00

27.000

SDTV 576P 50Hz

7.

1280*720

44.96

59.94

74.176

HDTV 720P

8.

1280*720

45.00

60.00

74.250

HDTV 720P

9.

1280*720

37.50

50.00

74.25

HDTV 720P 50Hz

10.

1920*1080

28.125

50.00

74.250

HDTV 1080I 50Hz,

11.

1920*1080

33.72

59.94

74.176

HDTV 1080I

12.

1920*1080

33.75

60.00

74.25

HDTV 1080I

13.

1920*1080

56.25

50

148.5

HDTV 1080P

14.

1920*1080

67.432

59.94

148.350

HDTV 1080P

15.

1920*1080

67.5

60.00

148.5

HDTV 1080P

6. HDMI Input 6.1. PC Mode

* Spec. out but it can be shown the picture at only HDMI/DVI IN 1 via DVI to HDMI Cable

No.

H-freq(kHz)

V-freq.(Hz)

Pixel clock(MHz)

1.

640×480

Resolution

31.469

59.94

25.17

VESA(VGA)

Proposed

2.

800×600

37.879

60.317

40.00

VESA(SVGA)

3.

1024×768

48.363

60.004

65.00

VESA(XGA)

4.

1280×768

47.776

59.87

79.5

VESA(WXGA)

5.

1360×768

47.72

59.799

84.62

VESA(WXGA)

6

1366×768

47.7

60.00

84.62

WXGA

7.

1280×1024

63.595

60.00

108.875

SXGA

8.

1920×1080

66.647

59.988

138.625

WUXGA

Remarks

* Monitor Range Limits Min Vertical Freq - 58 Hz / Max Vertical Freq - 63 Hz Min Horiz. Freq - 28 kHz / Max Horiz. Freq - 68 kHz Pixel Clock - 150 MHz


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6.2. DTV Mode No.

H-freq(kHz)

V-freq.(kHz)

Pixel clock(MHz)

1.

720*480

Resolution

15.73

59.94

13.500


Proposed

2.

720*480

15.75

60.00

13.514


3.

720*576

15.625

50.00

13.500

SDTV, DVD 576I(625I) 50Hz

4.

720*480

31.47

59.94

27

SDTV 480P

5.

720*480

31.5

60.00

27.027

SDTV 480P

6.

720*576

31.25

50.00

27

SDTV 576P

7.

1280*720

44.96

59.94

74.176

HDTV 720P

8.

1280*720

45

60.00

74.25

HDTV 720P

9.

1280*720

37.5

50.00

74.25

HDTV 720P

10.

1920*1080

28.125

50.00

74.25

HDTV 1080I

11

1920*1080

33.72

59.94

74.176

HDTV 1080I

12

1920*1080

33.75

60.00

74.25

HDTV 1080I

13

1920*1080

56.25

50.00

148.5

HDTV 1080P

14

1920*1080

67.432

59.94

148.350

HDTV 1080P

15

1920*1080

67.5

60.00

148.5

HDTV 1080P

16

1920*1080

27

24.00

74.25

HDTV 1080P

17

1920*1080

33.75

30.00

74.25

HDTV 1080P

18

1920*1080

26.97

23.97

74.25

HDTV 1080P

19

1920*1080

33.716

29.976

74.25

HDTV 1080P


-8-

Remarks Spec. out but display.


ADJUSTMENT INSTRUCTION 1. Application Range

This specification sheet is applied to all of the LED TV with LL35B chassis.

3.2. EDID Download

2. Designation

(1) Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument. (2) Adjustment must be done in the correct order. (3) The adjustment must be performed in the circumstance of 25 °C ± 5 °C of temperature and 65 % ± 10 % of relative humidity if there is no specific designation. (4) The input voltage of the receiver must keep 100-220 V, 50/60Hz. (5) The receiver must be operated for over 5 minutes prior to the adjustment when module is in the circumstance of above 15 °C. ► In case of keeping module is in the circumstance of 0 °C, it should be placed in the circumstance of above 15 °C for 2 hours. ► In case of keeping module is in the circumstance of below -20 °C, it should be placed in the circumstance of above 15 °C for 3 hours. * Caution When a still image is displayed for 20 minutes or longer (especially where W/B scale is strong. Digital pattern 13ch and/or Cross hatch pattern 09ch), there can some afterimage in the black level area.

3. MAIN PCBA Adjustments 3.1. ADC Calibration 3.1.1. Using D/L Jig

- An ADC calibration is automatically adjusted from DFT-Jig - If it needs to adjust manually, refer to appendix.

Item

Enter Adjust MODE

Adjust ‘Mode In’

ADC adjust

ADC Adjust

A

A D

0 1

1 FF 17 49 01 00 88 20 3A 03 22 0C 80 10 F0 18 00

2 FF 01 4B 01 C4 35 54 3F 28 1F 00 35 10 16 71 00

3 FF 03 21 01 8E 00 56 1C F1 10 10 00 3E 00 1C 00

4 FF 80 08 01 21 BC 0A 44 4F 26 00 BC 96 26 16 00

** HDMI 1 : 256Bytes 5 6 7 8 9 FF FF 00 1E 6D A0 5A 78 0A F3 00 45 40 01 01 01 01 1D 00 72 00 00 1E 1B 21 77 21 00 00 1C 20 20 20 20 20 0F 00 0A 20 20 84 07 01 16 02 11 07 50 09 7F 80 1E 00 01 1D 88 21 00 00 1E 00 13 8E 21 00 7C 43 00 C4 8E 20 58 2C 25 00 00 00 00 00 00

A 01 30 61 51 50 00 20 20 03 07 00 8C 00 21 C4 00

B 00 A4 40 D0 A0 00 20 20 11 83 80 0A 18 00 8E 00

C 01 54 01 1E 51 00 00 20 12 01 51 D0 8C 00 21 00

D 01 46 01 20 00 FC 00 20 13 00 D0 8A 0A 98 00 00

E 01 96 01 6E 1E 00 00 01 14 00 1C 20 A0 01 00 00

F 01 26 01 28 30 4C FD ⓐ 05 68 20 E0 14 1D 9E ⓐ

5 FF A0 00 01 00 88 20 0F 90 11 80 88 00 7C 20 00

A 01 B0 61 71 50 00 20 20 03 07 00 8C 00 21 C4 00

B 00 A3 40 38 A0 00 20 20 11 83 80 0A 18 00 8E 00

C 01 57 01 2D 51 00 00 20 12 01 51 D0 8C 00 21 00

D 01 49 01 40 00 FC 00 20 13 00 D0 8A 0A 98 00 00

E 01 9C 81 58 1E 00 00 01 04 00 1C 20 A0 01 00 00

F 01 25 80 2C 30 4C FD ⓐ 14 68 20 E0 14 1D 9E ⓐ

▪ 8BIT FHD MODEL ** HDMI 1 : 256Bytes 0 1 2 3 0 00 FF FF FF 10 01 17 01 03 20 11 49 4B 21 30 01 01 D1 C0 40 45 00 08 44 50 48 88 35 00 60 47 20 54 56 70 00 3A 3F 1C 80 02 03 28 F1 90 05 20 22 1F A0 03 0C 00 10 B0 40 80 35 00 C0 2D 10 10 3E D0 51 F0 16 00 E0 80 18 71 1C F0 00 00 00 00

4 FF 80 08 01 21 BC 0A 44 4F 26 00 BC 96 26 16 00

6 FF 5A 01 02 00 21 20 00 07 07 1E 21 13 43 58 00

EDID C/S data

CMD 1 CMD 2 Data 0 A

0 10 20 30 40 50 60 70 80 90 A0 B0 C0 D0 E0 F0

0 00 01 0F 01 55 48 47 00 02 20 03 40 2D 51 80 00

0

When transfer the ‘Mode In’, Carry the command.

0

Automatically adjustment (The use of a internal pattern)

Block 0 Check sum (Hex) Block 1

Adjust Sequence ▪ aa 00 00 [Enter Adjust Mode] ▪ xb 00 40 [Component1 Input (480i)] ▪ ad 00 10 [Adjust 480i Comp1] ▪ aa 00 90 End Adjust mode


7 00 78 01 3A 1E 00 20 0A 01 50 00 00 8E 00 2C 00

8 1E 0A 45 80 1B 00 20 20 16 09 01 00 21 C4 25 00

9 6D D9 40 18 21 1C 20 20 02 7F 1D 1E 00 8E 00 00

a. White Balance Adjustment

* ADC Calibration Protocol (RS232) NO

▪ HD MODEL

-9-

HD HDMI A5 44(HDMI1) 34(HDMI2)

FHD (8Bit) HDMI C1 44 (HDMI1) 34 (HDMI2)


4. White Balance Adjustment

(2) Adjustment Map

4.1. Overview

Adj. item

4.1.1. W/B adj. Objective & How-it-works

(1) Objective: To reduce each Panel’s W/B deviation (2) How-it-works: When R/G/B gain in the OSD is at 192, it means the panel is at its Full Dynamic Range. In order to prevent saturation of Full Dynamic range and data, one of R/G/B is fixed at 192, and the other two is lowered to find the desired value. (3) Adj. condition: normal temperature 1) Surrounding Temperature: 25 °C ± 5 °C 2) Warm-up time: About 5 Min◦ 3) Surrounding Humidity: 20% ~ 80% 4) B efore White balance adjustment, Keep power on status, don’t power off

Cool

Medium

4.1.2. Adj. condition and cautionary items

(1) Lighting condition in surrounding area surrounding lighting should be lower 10 lux. Try to isolate adj. area into dark surrounding. (2) P robe location: Color Analyzer(CA-210) probe should be within 10 cm and perpendicular of the module surface (80°~ 100°) (3) Aging time 1) After Aging Start, Keep the Power ON status during 5 Minutes. 2) In case of LCD, Back-light on should be checked using no signal or Full-white pattern.

Warm

j j j

a b c

00 00 00

C0 C0 C0

j j j

d e f

00 00 00

C0 C0 C0

Default (Decimal)

4.5. Adjustment method 4.5.1. Auto WB calibration

(1) Set TV in ADJ mode using P-Only key(or POWER ON key). (2) Place optical probe on the center of the display. - It need to check probe condition of zero calibration before adjustment. (3) Connect RS-232C Cable (4) Select mode in ADJ Program and begin a adjustment. (5) When WB adjustment is completed with OK message, check adjustment status of pre-set mode. (Cool, Medium, Warm) (6) Remove probe and RS-232C cable. ▪ W/B Adj. must begin as start command “wb 00 00” , and finish as end command “wb 00 ff”, and Adj. offset if need.

4.5.2. LED White balance table

4.3. Equipment connection

- G-gain should be fixed. (1) Cool Mode 1) Purpose : Adjust the color temperature to reduce the deviation of the module color temperature. 2) P rinciple : To adjust the white balance without the saturation, Fix the G gain to 172 (default data) and change the others (R/B Gain ). 3) Adjustment mode : mode - Cool (2) Medium / Warm Mode 1) Purpose : Adjust the color temperature to reduce the deviation of the module color temperature. 2) P rinciple : To adjust the white balance without the saturation, Fix the one of R/G/B gain to 192 (default data) and decrease the others. 3) Adjustment mode : Two modes - Medium / Warm

4.4. Adjustment Command (Protocol) (1) RS-232C Command used during auto-adj. RS-232C COMMAND

Data Range (Hex.) MIN MAX 00 C0 00 C0 00 C0

G Cut

4.2. Equipment

(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED: CH14) (2) A dj. Computer (During auto adj., RS-232C protocol is needed) (3) Adjust Remocon (4) Video Signal Generator MSPG-925F 720p/204-Gray (Model: 217, Pattern: 49) * Color Analyzer Matrix should be calibrated using CS-1000.

R Gain G Gain B Gain R Cut G Cut B Cut R Gain G Gain B Gain R Cut G Cut B Cut R Gain G Gain B Gain R Cut

Command (lower caseASCII) CMD1 CMD2 j g j h j i

Explantion

CMD

DATA

ID

wb

00

00

Begin White Balance adjustment

wb

00

ff

End White Balance adjustment (internal pattern disappears )


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4.6. Reference(White Balance Adjustment coordinate and color temperature)

(1) Luminance: 204 Gray, 80IRE (2) S tandard color coordinate and temperature using CS-1000 (over 26 inch)

Mode

Color Temp

Color coordinate

Cool (C50)

13,000 K

x = 0.269 (±0.002) y = 0.273 (±0.002)

Medium (0)

9,300 K

x = 0.285 (±0.002) y = 0.293 (±0.002)

Warm (W50)

6,500 K

x = 0.313 (±0.002) y = 0.329 (±0.002)

(Direct LED)

x

y

x

y

x

y

276

287

296

315

332

7.3. Checkpoint

■ 42” POLA LED W/B adjust target value (42LS3450 series) Cool Medium Warm Target

(Direct LED)

x

y

x

y

x

y

274

280

290

300

318

336

(1) Check the POWER CABLE and SIGNAL CABE insertion condition

(1) Pallet moves in the station. (POWER CORD / AV CORD is tightly inserted) (2) Connect the AV JACK Tester. (3) Controller (GWS103-4) on. (4) GND Test (Auto) - If Test is failed, Buzzer operates. - If Test is passed, execute next process (Hi-pot test). (Remove A/V CORD from A/V JACK BOX) (5) HI-POT test (Auto) - If Test is failed, Buzzer operates. - If Test is passed, GOOD Lamp on and move to next process automatically.

* Test signal - Inner pattern for W/B adjust - External white pattern (80IRE, 204gray)

271

7.1. GND & HI-POT auto-check preparation 7.2. GND & HI-POT auto-check

Remark

■ Direct LED & 32” POLA W/B adjust target value Cool Medium Warm Target

7. GND and HI-POT Test

5. Tool Option setting & Inspection per countries

(1) Test voltage - GND: 1.5 KV / min at 100 mA - SIGNAL: 3 KV / min at 100 mA (2) TEST time: 1 second (3) TEST POINT -G ND Test = POWER CORD GND and SIGNAL CABLE GND. -H i-pot Test = POWER CORD GND and LIVE & NEUTRAL. (4) LEAKAGE CURRENT: At 0.5 mArms

(1) Press 'IN START' key at Factory Service remote control. (2) Select 'Tool Option 1'. (3) Punch in the number and press 'OK'. (Each of models has their number) (4) Correct 'Tool Option2' ~ 'Tool Option5'. (5) Completed adjusting Tool option.

6. AUDIO output check

6.1. Audio input condition

(1) RF input: Mono, 1KHz sine wave signal, 100% Modulation (2) CVBS, Component: 1KHz sine wave signal (0.4Vrms) (3) RGB PC: 1KHz sine wave signal (0.7Vrms)

6.2. Specification Item

Min

Typ

Max

Unit

Remark

Audio practical max Output, L/R (Distortion=10% max Output)

4.5

5.0

6.0

W Vrms

(1) Measurement condition - EQ/AVL/Clear Voice: Off (2) Speaker (8Ω Impedance)


- 11 -


8. USB S/W Download

9. Optional adjustments

(optional, Service only)

9.1. Manual ADC Calibration

■ Enter ‘EZ ADJUST’ mode by pressing ‘ADJ’ key. ■ Enter Internal ADC calibration mode by pressing ‘’ or ‘OK’ key at ‘7. ADC Calibration’

(1) Put the USB Stick to the USB socket. (2) Automatically detecting update file in USB Stick. - If your downloaded program version in USB Stick is lower than that of TV set, it didn’t work. Otherwise USB data is automatically detected. (3) Show the message “Copying files from memory”.

ADC Calibration

EZ ADJUST 0. Tool Option1

NG

ADC Comp 480i

1. Tool Option2 2. Tool Option3 3. Tool Option4 4. Tool Option5

ADC Comp 1080p

NG

ADC RGB

NG Start

5. Tool Option Commercial

Reset

6. Country Group 7. Area Option 8. ADC Calibration

►

9. White Balance 10. 10 Point WB 11. Test Pattern 12. EDID D/L 13. Sub B/C 14. Ext. Input Adjust

► Caution : U sing ‘P-ONLY’ key of the Factory Service remote control when turns TV on.

9.2. Manual White balance Adjustment

9.2.1. Adjustment condition and cautionary items

(4) Updating is starting.

(5) Updating Completed, The TV will restart automatically. (6) If your TV is turned on, check your updated version and Tool option. (explain the Tool option, next stage) * If downloading version is more high than your TV have, TV can lost all channel data. In this case, you have to channel recover. if all channel data is cleared, you didn't have a DTV/ATV test on production line. * After downloading, have to adjust TOOL OPTION again. 1) Push "IN-START" key in service remote control. 2) Select "Tool Option 1" and push "OK" key. 3) Punch in the number. (Each model has their number.)

(1) Lighting condition in surrounding area surrounding lighting should be lower 10 lux. Try to isolate adj. area into dark surrounding. (2) Probe location: Color Analyzer (CA-210) probe should be within 10cm and perpendicular of the module surface (80°~ 100°) (3) Aging time 1) After Aging Start, Keep the Power ON status during 5 Minutes. 2) In case of LCD, Back-light on should be checked using no signal or Full-white pattern.

9.2.2. Equipment

(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED: CH14) (2) Adj. Computer(During auto adj., RS-232C protocol is needed) (3) Adjust Remot control (4) Video Signal Generator MSPG-925F 720p/216-Gray (Model: 217, Pattern: 78)

9.2.3. Adjustment

(1) Set TV in Adj. mode using POWER ON. (2) Zero Calibrate the probe of Color Analyzer, then place it on the center of LCD module within 10cm of the surface. (3) Press ADJ key → EZ adjust using adj. R/C → 6. WhiteBalance then press the cursor to the right (Key►). When Key(►) is pressed 216 Gray internal pattern will be displayed. (4) One of R Gain / G Gain / B Gain should be fixed at 192, and the rest will be lowered to meet the desired value. (5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of color temperature. ■ If internal pattern is not available, use RF input. In EZ Adj. menu 6.White Balance, you can select one of 2 Test-pattern: ON, OFF. Default is inner(ON). By selecting OFF, you can adjust using RF signal in 216 Gray pattern.


- 12 -


- 13 -

((

((

P301

LPF

LPF

30 21 18

IC301

38

9

8

10 11

Sound AMP NTP7513 33

7

Audio_SCL

JK203 JK204

HDMI SCL/SDA

113 112

9 116 107

41 30 18 100

77 62 54

EEP SCL

48 115 50 51

Audio_SDA

I2S_MCLK I2S_WS I2S_SCK I2S_SDO

Main_1.8V IC711 1.8V REG

To USB

EEP SDA

84

SPI_CLK SPI_DI SPI_CZ SPI_DO

102 105 101

Inv. ON 85

94 95 97 96

1

XXX

P400

108

Led_PWR 27,35,36

26,33,34

IR/KEY

117 111 110

IR 22,20,24,33,34

IC501

MST6841XP

XXX

LVDS Output

P601/602 ST_3.5V

38

IF_AGC

10

B+

TUNER 5

4 Tuner SDA 3 Tuner SCL

9

24Mhz

USB_DN USB_DP

USB_5V

7

11

IF_N

JK101

M_3.3V

OP-AMP A_OUT_12V IC302 TU_1.8V x4 Gain Audio TU_3.3V Out IC401 To USB

37

52

53

45

40

39

43

44

99

98

IR Board

JK202

32 19 31 20

40 35

Main_3.3V

Main_1.2V

Main_5V

S_AMP_24V

Q710

IC701 MP20051

IC709 MP1497

IC503 EEPROM 24C64

IC502 Serial Flash 8Mbytes

Panel_Vcc Q720 AO3407A

4 P Dim

2 RL On

P701 KEY2

13~15 KEY1

3 5

Audio L-Out

9 10

Audio R-Out

Module

Y,Pb,Pr In

Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Comp. R/L In

P_ST 3.5V AV1 In

P_12V AV2 In

IF_P

POWER BOARD

BLOCK DIAGRAM

P_24V


EXPLODED VIEW IMPORTANT SAFETY NOTICE

A10

Set + Stand

A9

Stand Base + Stand Body

A2

300

301

500

200

122

910

123

530

LV1

900

540

120

521

510

400

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and EXPLODED VIEW. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer.


- 14 -


EAX65027101 LB35B/LC35B/LL35B

COMPONENT / AV IN / AV AUDIO OUT

JK101 PPJ239-06 7H 6H

AV2RIN

R117 ZD110 20V

R116 220K

AV2_RIN

10K

R118 12K

C108 470pF 50V

4H 5G

AV2LIN

R114 ZD109 20V

R113 220K

AV2_LIN

10K

R115 12K

C107 470pF 50V

4F 6F

AV2_VIN

AV2_VIN D101 READY

8F 5E

R112 75

ZD108 SD05

D102 READY

MNTROUT

8E

C106

R111 1K

C105 5600pF 50V

ZD107 20V

C E

Q103 C E

B

B

MMBT3904(NXP)

10uF 16V POP

MNT_ROUT MUTE_AOUT NOISE

READY Q104 MMBT3904(NXP)

5D

MNTLOUT

C104

R110

ZD106 20V

7D

1K

C103 5600pF 50V

C E

C

B

B

Q101

MNT_LOUT

10uF 16V

MMBT3904(NXP)

E

POP

MUTE_AOUT NOISE

READY Q102 MMBT3904(NXP)

7N 6N

R108

COMMONRIN

ZD105 20V

R107 220K

ZD104 20V

R104 220K

10K

COMMON_RIN R109 12K

C102 470pF 50V

R106 12K

C101 470pF 50V

4N 5M 5L

R105

COMMONLIN

10K

COMMON_LIN

COMP_PR

COMP_PR 8L

D103 READY

ZD102 SD05

R103 75

ZD101 SD05

R102 75

D104 READY

5K

COMP_PB

D105 READY

8K D106 READY

COMP_PB

V-OUT Buffer(DEBUG)

4J 6J

COMMON_VIN D107 READY

7J

D108 READY

COMMON_VIN ZD100 SD05

P_12V

R101 75

DEBUG

AV2_VIN

OPT

TP101

R122 0

C E

B

MMBT3904(NXP) Q105 R121 33

DEBUG

MNT_VOUT

DEBUG

R120 75 DEBUG

R123 220

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.

32LN5100 INPUT1

2012/11/15 1

7

INPUT1

Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes



HDMI(REAR)

I2C Control

R231 1K

KJA-PH-1-0177 JK201

HDMI1_HPD

With UART IC

C

R230 10K

+3.5V_ST

MMBT3904(NXP)

1

M1

3

M3_DETECT

4

M4

MAX3232CDR

R206 16

1

C1+

R205 0

W/O UART IC

M5_GND

GND

With UART IC R201 100 R204 0

DOUT1 R202 100

RIN1

15

2

14

3

13

4

V+

C1-

C203 0.1uF

DEBUG P201

DIN1

12505WS-04A00 DIN2

12

5

11

6

10

7

9

8

D230

BAT54C

HDMI1_DET READY ZD230

SHIELD With UART IC

20 19 HPD

R234 4.7K

18 +5V_POWER C2+

With UART IC ROUT1

With UART IC C202 0.1uF

C

VCC C201 0.1uF

W/O UART IC

5

0 W/O UART IC

A2

M6

+5V_USB

E

A1

6

Q230

B

IC201

C2-

R232 R233 2.7K 2.7K

READY ZD231

16 SDA 15 SCL

C204 0.1uF

V-

DOUT2

17 DDC/CEC_GND

With UART IC

R235 10K

READY ZD232

R236 100 R237 100

HDMI1_SDA HDMI1_SCL

14 NC

With UART IC

READY ZD233

13 CEC 12 CLK-

C205 0.1uF

HDMI1_CK-

11 CLK_SHIELD

1 ROUT2

RIN2

10

2 EAN41348201

9 8

3

7

CLK+

HDMI1_CK+ HDMI1_D0-

DATA0DATA0_SHIELD DATA0+

HDMI1_D0+ HDMI1_D1-

DATA1-

4

6

P202 +3.5V_ST

5

12507WS-04L

VCC

PM_RXD

GND

RM_TXD

5 4

1

DATA1_SHIELD DATA1+

HDMI1_D1+ HDMI1_D2-

3 DATA2DATA2_SHIELD 2 DATA2+ 1

2

HDMI1_D2+

3

JK203

4

DSUB_SCL

DSUB_SDA

5 GND

R242 1K Q240

B

MMBT3904(NXP) +5V_USB

A1

E

D240 BAT54C

HDMI2_DET C

READY ZD240

A2

HDMI2_HPD

C

R241 10K

SHIELD

20 19 HPD

USB(SIDE)

17 DDC/CEC_GND Close to SIDE_USB

16 SDA 15 SCL

L220 OPT

C220 10uF 10V

3AU04S-305-ZC-(LG) JK202

C221 22uF 10V

R245 4.7K

18 +5V_POWER

+5V_USB

120OHM

R246 10K

R243 R244 2.7K 2.7K

READY ZD241

READY ZD242

14 NC

1

13 CEC 12 CLK-

R247 100 R248 100

HDMI2_SDA HDMI2_SCL

READY ZD243

USB DOWN STREAM

HDMI2_CK-

2

11 CLK_SHIELD USB_DN 9

READY ZD221 30V

8 7

DATA0-

DATA0+

6 5 4

HDMI2_CK+ HDMI2_D0-

DATA0_SHIELD

DATA1-

5

4

3

10 USB_DP READY ZD220 30V

CLK+

HDMI2_D0+ HDMI2_D1-

DATA1_SHIELD DATA1+

3 DATA2DATA2_SHIELD 2 DATA2+ 1

HDMI2_D1+ HDMI2_D2HDMI2_D2+

JK204


32LN5100 INPUT2

2012/11/15

2

7

INPUT2




SW_RESET

100

AUAMP_SCL

PVDD1A

OUT1A

PVDD1B 31

32

33

34

PGND1A

RESET

AD

CLK_I

BST1A 35

36

37

38

GND_IO

VDD_IO

6

NTP7513

25

AGND

24

VDR2

23

BST2A

22

PGND2A

100

WCK

8

SDA

9 10

21

R315 12

4.7K

SPEAKER_L C331 0.1uF 50V

L304 10uH ABCO

R316 12

R323 4.7K SPK_L-

L304-*1 10.0uH

C315 22000pF 50V

JP304 SPK_L+

SPK_L+ C312 1uF 10V

C313 1uF 10V

3

JP302 SPK_R+

SPK_R+

C311 22000pF 50V

OUT2A

SPK_L-

SPK_L-

C314 1uF 10V

4

JP303

2

JP301 SPK_R-

SPK_R-

1 .

20

BCK

0x54

19

100

VCC5

DVDD

18

R307

VDR1

26

17

100

BST1B

27

16

R306

28

IC301

11

AUAMP_SDA

PGND1B

5

R302

100

29

4

7

C330 0.1uF 50V

TAIYO YUDEN

DGND SDATA

R303

I2S_SCK

OUT1B

3

15

I2S_WS

30

R322

C329 0.47uF 50V

C326 390pF 50V

GND

100

ABCO L303 10uH

R314 12

C325 390pF 50V

DGND_PLL

THERMAL 41

14

I2S_SDO

SPK_L+ R313 12

2

R301

L303-*1 10.0uH

C317 10uF 35V

VDD_PLL

13

C303 1uF 10V

1

12

C301 0.1uF 16V C302 0.1uF 16V

TAIYO YUDEN C318 0.1uF 50V

39

C322 0.1uF 16V

40

C321 10uF 6.3V

AGND_PLL

OPT

+24V_AMP

L301

BLM18PG121SN1D

[EP]GND

+3.3V_M

C319

I2S_MCLK R304

22000pF

50V

C320 1000pF 50V

SMAW250-H04R

P301

PVDD2A

OUT2B

PVDD2B

PGND2B

BST2B

MONITOR_2

MONITOR_1

+3.3V_M

MONITOR_0

R309 4.7K

SCL

R308 4.7K

C306 33pF 50V

FAULT

TAIYO YUDEN C305 33pF 50V

L305-*1 10.0uH +24V_AMP

R317 12

R318 12

SPK_R+

ABCO L305 10uH

C327 390pF 50V C309 0.1uF 50V

C308 22000pF 50V

C310 10uF 35V

C328 390pF 50V R319 12

C334 0.1uF 50V

R324 4.7K

C335 0.1uF 50V

R325 4.7K

C333 0.47uF 50V

SPEAKER_R

L306 10uH ABCO

R320 12

TAIYO YUDEN SPK_R-

L306-*1 10.0uH

R311 POWER_DET 100

AUDIO_OUT AMP : GAIN X 4 IC302 AS324MTR-E1

P_12V

C350 0.1uF 16V C

B

Q350 MMBT3904(NXP) R351

1 OUT1

1K

OUT4 14

E

MNT_LOUT R350 4.7K

C351 6800pF 50V

R352

C352

10K

33pF 50V

2 INPUT1-

INPUT4- 13

3 INPUT1+

INPUT4+ 12

R353 6.8K

R354

MNT_L_AMP

5.6K

P_12V

4 VCC

GND 11

C353 0.1uF 16V

R355

MNT_R_AMP

C354

5.6K

5 INPUT2+

INPUT3+ 10

6 INPUT2-

INPUT3- 9

33pF 50V

P_12V R356

10K R357 6.8K

C355 0.1uF 16V C

B

Q351 MMBT3904(NXP) R358

7 OUT2

1K

OUT3 8

E

MNT_ROUT R359 4.7K


C356 6800pF 50V

32LN5100 AUDIO

2012/11/15 3

7

AUDIO




IR

+3.5V_ST

R422 10K

R421 10K

KEY1

ZD401 SD05

OPT C421 0.1uF P421 12507WR-08L

KEY2

ZD402 SD05

OPT C422 0.1uF

1

2 +3.5V_ST

3 L421

BLM18PG121SN1D 4

IF

C424 1000pF 50V

C423 0.1uF 16V

R423 4.7K OPT

5

LED OPT C425 0.1uF 16V

7

IR C426 100pF 50V

NTSC TU402 TDSS-H501F(B)

PAL TU401 TDSH-G501D(B)

6

8 9

+3.3V_TU

R404 100K R403 100

1 2

NC

1

RESET

2

TUNER_RESET C401 0.1uF 16V

NC_1

+3.3V_TU

RESET

R407 2.2K

R408 2.2K

R405

3 4 5 6 7 8 9 10 11 B1

B1

A1

SCL

3

SDA

4

+B1[3.3V]

5

SIF

6

+B2[1.8V]

7

CVBS

8

IF_AGC

9

DIF[P]

10

DIF[N] A1

11 B1

B1

A1

SCL

C402 47pF 50V

SDA

R406 C403 47pF 50V

+B1[3.3V]

A2 A2

B2

12

Near the pin

+3.3V_M Size change,0929

L401 BLM18PG121SN1D

1/10W

NC_2

C406 100pF 50V

C405 0.1uF 16V

R410 1

C404 22uF 6.3V

C411 0.1uF 16V

1/10W

C412 10uF 6.3V

+B2[1.8] IC401 AP1117E18G-13

NC_3

1

R411 1

IN

ADJ/GND

3

OUT 2

IF_AGC DIF[P]

C409 100pF 50V

C407 10uF 6.3V C408 0.1uF 16V

DIF[N] R412 100

A1

NTSC R413-*1 0

R414 10 PAL

SHIELD

+3.3V_TU

TUNER_SDA

33

R409 1

R413 10 PAL

B2

TUNER_SCL

33

C410 0.1uF 16V

IF_AGC

should be guarded by ground

IF_P IF_N

Close to the tuner NTSC R414-*1 0

READY C430 0.1uF 250V

READY C431 0.1uF 250V R401 0 NTSC


32LN5100 TUNER & IR

2012/11/15 4

8

TUNER & IR



+3.5V_ST

AUAMP_SCL

PWM_DIM

MSTAR Vcc

+3.3V_M

R535 1K

R536 22

+1.2V_VDDC

1K

VDDC

120-ohm

C501 10uF 6.3V

HW_OPT1 HD

R551 4.7K

TESTPIN

DDCA_CK

DDCA_DA

R537 22

ST 1.26V

L500

R550 4.7K

R534

PWM1/GPIO25 PWM0/GPIO26

R540 1K

GPIO67

R541 100

SAR3/GPIO72 SAR2/GPIO73 SAR1/GPIO74 SAR0/GPIO75 AVDD_DDR_2

GPIO68

GPIO69/I2S_OUT_MCK

GPIO70

IRIN

CEC

HWRESET

GND

HOTPLUG_D

RXCKN_D

RXCKP_D

RX0N_D

RX0P_D

DDCDD_DA

RX1N_D

RX1P_D

R542 100

[EP]

FHD HIGH

FHD

C549 0.1uF

R545 100

R546 100

R538 4.7K

R543 100

HD LOW

HW_OPT

DSUB_SCL

R544 100

R518 100

LED R539 4.7K

R519 4.7K

DSUB_SDA

KEY1

KEY2

*H/W OPTION AVDD_DDR

SW_RESET

AUAMP_SDA

I2S_MCLK

IR

MUTE_AOUT +3.5V_ST

HW_RESET

HDMI2_HPD

HDMI2_CK+

HDMI2_CK-

HDMI2_D0-

HDMI2_SDA

HDMI2_D0+

LB35B/LC35B/LL35B

HDMI2_D1-

HDMI2_D1+

EAX65027101

DDR 1.8V

R533

L501

0

+1.8V_M

AVDD_DDR

120-ohm

C502 10uF 6.3V

C503 4.7uF

14

85

GPIO6

HSYNC1

19

84

GPIO7

BIN1P

20

83

INT/GPIO65 LVB0M

80

LVB0P

25

78

LVB1P

CVBS1

26

77

AVDD_MOD_3

CVBS0

27

76

LVB2M

VCOM

75

28

CVBSOUT1 AVDD_AU33

R547 10K R548

POWER_SW

LVB2P

72

32

71

LVB3P

33

70

LVB4M

34

69

LVB4P

35

68

LVA0M

67

LVA0P

37

66

LVA1M

62

63

64

LVA2P

LVA2M

58 LVA3P

61

57 LVA4M

LVACLKM

56 LVA4P

AVDD_MOD_2

55 VDDC_1

60

54 VDDP

59

53 GPIO61

LVA3M

52 GPIO60

LVACLKP

50 51

6

4

5

R569 R577 4.7K 4.7K

SCL

EEP_SCL

R578 22

SDA C573 22pF READY

C574 22pF READY

EEP_SDA

R579 22

VDDC C547 0.1uF RXB0RXB0+

SERIAL FLASH(2MB)

RXB0RXB0+

RXB1-

RXB1-

RXB1+

RXB1+

+3.5V_ST

C546 0.1uF RXB2RXB2+

RXBCK-

RXB3+

RXB2-

IC502 W25Q64FVSSIG

RXB2+

SPI_CZ

RXBCKRXBCK+

SPI_DO

R571 100

CS

R572

DO[IO1]

1

8

2

7

3

6

VCC

C570 0.1uF 16V

%HOLD[IO3]

100

RXB3-

WP[IO2]

R573 FLASH_WP

CLK

R574 100

100

RXB3+

GND

4

5

DI[IO0]

SPI_CLK

R575

SPI_DI

100

36

GPIO58/I2S_OUT_SD

3

C572 0.1uF 16V

WP

EEP_SCL

RXB3-

31

VAG

49

7

100

RXBCK+

LVB3M

48

8

2

VDDC_3.3

AUREF

47

1

+3.5V_ST VCC

R549

LVBCKP

39

A2

VSS

LVBCKM

MNT_R_AMP

A1

R527 10K

73

65

A0

10K R528 100

74

38

IC503 R1EX24256BSAS0A

HDMI2_DET

30

R508 100

EEPROM(64K)

HDMI1_DET

29

46

2.2uF

LVB1M

VSYNC1

LINEIN_L1 LINEIN_R1 LINEIN_L3 LINEIN_R3 LINEOUTL3 LINEOUTR3

2.2uF

79

24

45

C517 0.1uF

81

44

C515 0.1uF

22

43

0.047uF

GIN1P

42

C514

VDDC_2

RIN1P

FLASH_WP

100

POWER_DET

82

23

R530

EEP_SDA

21

41

0.047uF

3.3V_DMPLL

HW_OPT1

SOGIN1

40

68

L506

MNT_L_AMP

103

18

AU_3.3V

R510 220K

104

AVDD3P3_ADC

MNT_VOUT

C522 220pF

105

GPIO5

GIN1M

L505

120-ohm

PANEL_ON

GPIO4

R507

C521

GPIO3

86

C511

AU_3.3V

SPI_CLK

87

R503

AVDD33_DEMOD L504

120-ohm

SPI_DI

17

C508 0.047uF

L503

120-ohm

SPI_DO

16

C512 0.047uF

AV2_RIN

88

15

C548 0.1uF

SPI_CZ

VDD

C550 0.047uF

C520

LGE6841 (ATV_13)

VDDC_3.3 C504 10uF 6.3V

VDDC_3.3

10K

RX2P_A

120-ohm

+3.5V_ST

USB_DN

ARC

COMP_PR

AV2_LIN

106

GPIO2

13

R523 33

2.2uF

107

89

RX2N_A

C509 1000pF

2.2uF

108

GPIO1

12

C506 0.1uF

C518

109

90

DDCDA_DA

VDDC

C519

110

91

GPIO0

IC501

11

DDCDA_CK

COMMON_RIN

111

92

PWM3/GPIO25 PWM2/GPIO24

HDMI1_SCL

COMMON_LIN

112

SPI_CK

93

HDMI1_D2+

C516 10uF

113

94

10

HDMI1_D2-

120-ohm

114

9

HDMI1_SDA

68

115

95

RX1P_A

C513 0.047uF

116

8

SPI_DI

HDMI1_D1+

R506 33

117

SPI_DO

HDMI1_D1-

AV2_VIN

118

96

RX1N_A

R505 33

119

7

AVDD_MOD_1

R504 33

120

SPI_CZ

ST 3.3V

L502

RL_ON

USB_DP

97

VDDC_3.3

C510 0.047uF

99

USB0_DP

98

HDMI1_D0+

R502 33

AVDD_MOD_4

6

RX0P_A

COMMON_VIN

100

5

RX0N_A

COMP_PB

GPIO63

RXCKP_A HDMI1_D0-

R501 33

101

USB0_DM

HDMI1_CK-

C507 0.1uF

GPIO64

RXCKN_A HDMI1_CK+

VDDC_3.3

121

4

HDMI1_HPD

C505 0.1uF

THERMAL 129

102

R570

HOTPLUG_A

122

3

HDMI2_D2+

123

RX2P_D

HDMI2_D2-

124

2

125

RX2N_D

126

1

127

DDCDD_CK HDMI2_SCL

128

INV_ON R531 10K

LVA1P

RXA0-

RXA0-

RXA0+

RXA0+

RXA1-

RXA1-

RXA1+

RXA1+

C571 0.1uF 16V READY

H/W RESET +3.5V_ST

C536 33pF

50V

Close to MSTAR Close to MSTAR

2

RESET

POWER_DET

RXA2-

RXA2+

GND

C560 0.1uF

RXA2+

R562 470 RXA2-

RXACK-

1

RXACK-

RXACK+

RXA3-

RXA3-

RXA3+

RXA3+

3

C561 4.7uF 10V

C541 22000pF 50V

C537 33pF

L521 100NH OPT

RXACK+

+3.3V_M

TUNER_SDA

C535 0.1uF

OPT

C551 220pF 50V

R524 0

TUNER_SCL

C534 0.1uF

C531 15pF

AVDD_DDR

R517 10K

24MHz

I2S_SCK

R514 100

TUNER_RESET

R513 100

R521 100

R561 10K

IC504 APX803D29 VCC

R520 100

I2S_SDO

GPIO56

GPIO55/I2S_OUT_WS

VSS

AVDD_DDR

IFAGC

C542 0.1uF

X501

C530 15pF

VIFM

VIFP

AVDD3P3_DADC

C533 0.1uF

AVDD33_DEMOD

I2S_WS

3.3V_DMPLL

GPIO57/I2S_OUT_BCK

C532 0.1uF R512 1M

AVDD3P3_DMPLL

R511 220K

XTALO

C523 220pF

XTALI

R509 100

IF_AGC

R564 10 C544 0.1uF

C543 0.1uF

C545 0.1uF

C562 4.7uF 10V

R563 62K

HW_RESET C563 0.1uF 16V

VDDC

IF_N


IF_P

VDDC_3.3 VDDC_3.3

32LN5100 MAIN SOC

2012/11/15 5

7

MAIN SOC




FHD P602 FI-RE51S-HF-J-R1500

1 2 3 4 5 6 7 8 9 10 11 12

RXA3+

13

RXA3-

14 15

RXACK+ RXACK-

16

RXA2+

17

HD P601 FF10001-30

RXA2-

18 1 19

RXA1+ 2

20

RXA13

21 4 22

RXA0+ 5

23

RXA06

24 7 25 8 26 9 27 10 28 29

RXB3+ RXB3-

11 12

30 31

RXBCK+ RXBCK-

13 14

32 33

RXB2+ RXB2-

15 16

34 17 35 36

RXB1+ RXB1-

18 19

37 20 38

RXB0+

39

RXB0-

21 22 40 23 41 24 42 25 43 26 44 27 45 28 46 29 47

PANEL_VCC

48

30

FHD L602 120OHM

50

[29] [28] [27] [26] [25]

RXA0RXA0+

[24] [23] [22]

RXA1RXA1+

[21] [20] [19]

RXA2RXA2+

[18] [17] [16]

RXACK-

[15]

RXACK+

[14] [13]

RXA3RXA3+

[12] [11] [10] [09] [08] [07] [06] [05]

PANEL_VCC

[04] [03]

HD L601 120OHM

[02] [01] HD C603 0.1uF 16V

31

49

[30]

OPT C602 1000pF 50V

OPT C601 10uF 16V

.

51 52


FHD C606 0.1uF 16V

OPT C605 1000pF 50V

OPT C604 10uF 16V

32LN5100 LVDS

2012/11/15 6

7

LVDS




** 3.5V_ST -> 1.26V VDDC +3.5V_ST

V0 = 0.8*(1+(R2/R1))

FROM LIPS & POWER B/D

IN_2

8

C

P701 SMAW200-H18S1

B

E

C740 10uF 6.3V

NC

RL_ON

PWM_DIM_120HZ R729-*1

PWR_ON C702 0.1uF 16V

ZD702 SD05

3.5V

120OHM

3.5V

3

4

5

6

P-DIM2

7

8

L702

24V

9

10

24V

120OHM

GND

11

12

GND

12V

13

14

12V

L703

12V

15

16

NC

120OHM

GND

17

18

GND

P_12V

R710 100

3

5

4

R742 1

FB

R1

EN

C742 10uF 6.3V

C

1K

R740 2.7K

R2 1%

GND

R741 4.7K

R715 10K

PWM_DIM_60HZ R729

B

PWM_DIM

R716 10K

Q703

GND

C707 0.1uF 50V

C705 0.1uF 16V

DRV_ON P-DIM

GND

+24V_AMP

ZD701 20V READY

2

1

6

C741 0.1uF 16V

+3.5V_ST

R714 1K

100

L701

OUT_2

2

1%

R744 10K +3.3V_M

+3.5V_ST

9

7

THERMAL

IN_1

OUT_1

1

+3.5V_ST MMBT3906(NXP) Q722

+1.2V_VDDC OUT:1.26V

IC701 MP20051

[EP]GND

100 R728 PWM_DIM_120HZ

E

MMBT3904(NXP)

INV_ON

** 3.3V_M -> 1.8V_M IC711 AP1117E18G-13

+3.3V_M

IN 3

ADJ/GND 1

C744 0.1uF 16V

C743 10uF 6.3V

+1.8V_M 2

OUT

C745 10uF 6.3V

.

19

** +3.5V_ST -> 3.3V_M +3.5V_ST Q710 AO3435

C750 0.1uF 16V READY

R748 33K

**12V->USB 5V

R749 2.2K C

NR8040T4R7N L771

C774 0.1uF SS

L770 120OHM Closed IC709 C770 10uF 16V

IN

C772 0.1uF 16V

SW

GND

2

3

FB

8

1

VCC

7

3A

4

E

OUT:5V R1 R770 43K

C776 22uF 10V

OPT

+5V_USB

C777 10uF 10V

1%

R771 33

R2

R778 47K

R772 8.2K 1%

EN

6

C775 0.1uF 16V

** Switch Panel-Vcc

BST

5

P_12V

R777 100K +3.3V_M

JP711

JP710

R765 3.3K

OPT R766 4.7K

C

PANEL_ON JP709

C761 0.1uF 16V

R762 5.6K

** Jig Point_GND JP708

C760 4.7uF 16V

G

R761 33K


PANEL_VCC

Q720 AO3407A

L761 120OHM

S

C773 0.1uF 16V

D

P_12V

6.8uH Closed IC709

Q711 MMBT3904(NXP)

B

POWER_SW

V0 = 0.8*(1+(R1/R2)) IC709 MP1497DJ

+3.3V_M C754 10uF 6.3V

C752 0.1uF 16V

G

R750 10K

R747 10K

C771 1uF 25V

C753 4.7uF 10V

D

S

L750 BLM18PG121SN1D

B Q721 E MMBT3904(NXP)

32LN5100 POWER

2012/11/15 7

7

POWER



Standard Repair Process

Error symptom

LCD TV

A. Video error

Established date

No video/ Normal audio

Revised date

2013. 01 .24 1/14

First of all, Check whether all of cables between board is inserted properly or not. (Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,) ☞A1 No video Normal audio

Normal audio

Y

Check Back Light On with naked eye

N Move to No video/No audio

☞A4 Y

On

Check Power Board 24v, 12v,3.5v etc.

N

☞A2

Y

Replace T-con Board or module

N

Ch k P Check Power B Board d 93.2~118.5V 93 2 118 5V v output t t

Normal o tage voltage

Normal voltage

Y

R Repair i P Power B Board d or parts

Replace Inverter or module End

N Repair Power Board or parts

※Precaution

☞A6 & A3

Always check & record S/W Version and White Balance value before replacing the Main Board

Replace Main Board

Re-enter White Balance value

1 / 37 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes



LCD TV

Error symptom

A. Video error

Established date

No video/ No audio

Revised date

2013. 01 .24 2/14

☞A4 No Video/ No audio

Check various voltages of Power Board ( 3.5V,12V,20V , , or 24V…))

Y

Normal voltage? N

Check and replace MAIN B/D End

Replace Power Board and repair parts t




Error symptom

LCD TV

A. Video error

Established date

Picture broken/ Freezing

Revised date

2013. 01 .24 3/14

☞ A5 Check RF Signal level

Normal Signal?

Y

Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) → DVD Player ,Set-Top-Box, Different maker TV etc`

N

☞ A6

Check RF Cable Connection 1. Reconnection 2. Install Booster

Normal Picture?

Y

Check S/W Version

Normal Picture?

N

Y

N N

SVC Bulletin?

Check Tuner soldering

Normal Picture?

Y

Close

N

S/W Upgrade Contact with signal distributor or broadcaster (Cable or Air) Normal Picture?

Y

N

Replace Main B/D

Y Close Close




LCD TV

Error symptom

A. Video error

Established date

Tuning fail, Picture broken/ Freezing

Revised date

☞ A5 Check RF Signal level

2013. 01 .24 4/14

Check RF signal cable Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) → Set-Top-Box, Different maker TV etc

☞ A6 Normal Signal?

Y

Check S/W Version

N

SVC Bulletin?

N

Check Tuner soldering

Replace Main B/D

Y S/W Upgrade

Contact with signal distributor or broadcaster

Normal Picture?

N

Y Close

Close




LCD TV

Error symptom

☞A7 A7 Check color by input -AV -COMPONENT -HDMI

A. Video error

Established date

Color error

Revised date

Color error?

Y

※ Check and replace Link Cable (LVDS) and contact condition

Y Color error?

Y

Color error?

Replace Main B/D

Replace module

N

N End

Check error color input mode

Check Test pattern

5/14

☞ A8/ A9

N

☞A10

2013. 01. 24

AV/ Component error

Check external device and cable

External device Y /Cable normal

Replace Main B/D

N Request repair for external device/cable N HDMI error

Check external device and cable

External device Y /Cable normal

Replace Main B/D




A. Video error

Error symptom

LCD TV

Established date

Vertical / Horizontal bar, residual image, light spot, external device color error

2013. 01 .24

Revised date

6/14

Vertical/Horizontal bar, residual image, light spot

Replace Module

☞A7 A7

☞ A8/ A9

Check color condition by input -AV -Component -HDMI

Screen Y normal?

Check external device connection condition

Normal?

Check and replace Link Cable

Screen normal?

N

N

Check Test pattern

N

Screen normal?

Replace Main B/D

Y

Y

Request repair for external device

Replace module

☞A10

Y

N

End

End

External device screen error-Color error Check S/W Version

Check version

N

Y

AV Input error Component error

S/W Upgrade pg

Normal screen?

Check screen condition by input -AV -Component -HDMI

N

HDMI

Y

Connect other external device and cable (Check normal operation of External Input, Component, and HDMI by connecting Jig, pattern Generator ,Set-top Box etc. Connect other external device and cable (Check normal operation of External Input, Component, and HDMI by y connecting g Jig, g, pattern Generator ,Set-top Box etc.

Screen normal?

N Replace Main B/D

Y Request repair for external device Y Screen normal?

N

Replace p Main B/D

End




LCD TV

Error symptom

B. Power error

Established date

No power

Revised date

☞A11 Check Power LED

. Stand-By: Red

2013. 01 .24 7/14

☞A13 DC Power on yp pressing g Power Key y by On Remote control

Y

Power LED On? N

Normal operation?

N

Check Power On ‘”High”

OK?

Y

Replace Power B/D

Y

Check Power cord was inserted properly

Replace Main B/D

☞A4 Normal?

Measure voltage of each output of Power B/D

N

Y

Close

Y

※ Check ST-BY 3.5V

Normal Y voltage?

☞A12

Normal voltage?

Y

Replace Main B/D

N Replace Power B/D

N

Replace Power B/D




LCD TV

Established date

B. Power error

Error symptom

Off when on, off while viewing, power auto on/off

2013. 01 .24

Revised date

8/14

Check outlet

☞A14 Ch k A/C cord Check d

E Error? ?

N

Check Power Off Mode

CPU Abnormal

Normal?

Replace Main B/D

Y

End

N Check for all 3- phase power out

Y

Abnormal 1

☞A13

Fix A/C cord & Outlet and check each 3 phase out

(If Power Off mode is not displayed) Check Power B/D voltage lt ※ Caution Check and fix exterior of Power B/D Part

* Please refer to the all cases which can be displayed on power off mode.

Replace Power B/D

Normal voltage?

Y

Replace Main B/D

N Replace Power B/D

Status

Power off List "POWEROFF_REMOTEKEY" "POWEROFF_OFFTIMER" "POWEROFF_SLEEPTIMER" "POWEROFF_INSTOP" Normal "POWEROFF_AUTOOFF" "POWEROFF_ONTIMER" "POWEROFF_RS232C" "POWEROFF_SWDOWN" "POWEROFF_UNKNOWN" "POWEROFF POWEROFF_ABNORMAL1 ABNORMAL1" Abnormal "POWEROFF_CPUABNORMAL"

Power Power Power Power Power Power Power Power Power Power Power

off off off off off off off off off off off

Explanation by REMOTE CONTROL by OFF TIMER by SLEEP TIMER by INSTOP KEY by AUTO OFF by ON TIMER by RS232C by S/W Download by unknown status except listed case by abnormal status except CPU trouble by CPU Abnormal




LCD TV

Error symptom

C. Audio error

Established date

No audio/ Normal video

Revised date

☞A15 No audio Screen normal

Check user menu > Speaker off

2013. 01 .24 9/14

☞A16 N

Off

Check audio B+ 24V of Power Board

Normal voltage

Y

N

Cancel OFF

Check Speaker disconnection

Y

Replace Power Board and repair parts

Disconnection

N

Replace MAIN Board

End

Y Replace Speaker




LCD TV

C. Audio error

Error symptom

Wrecked audio/ discontinuation/noise

Established date

2013. 01 .24

Revised date

10/14

→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio ☞A16

Check input signal -RF -External Input signal

Wrecked audio/ Discontinuation/ Noise for all audio Signal normal?

Check and replace speaker and connector

Check audio B+ Voltage (24V)

Y

N

Y

Wrecked audio/ Discontinuation/ Noise only for RF

Normal voltage? Replace Main B/D

N

Replace Power B/D (When RF signal is not received) Request repair to external cable/ANT provider (In case of External Input signal error) Check and fix external device

Replace Main B/D

Wrecked audio/ Discontinuation/ Noise only for External Input Connect and check other external device

Normal audio?

End

N

Y Check and fix external device




Error symptom

LCD TV

D. Function error

Established date

Remote control & Local switch checking

Revised date

2013. 02. 02 11/14

1. Remote control(R/C) operating error ☞A17 Check R/C itself Operation

☞A17

Check & Repair Cable connection Connector solder

Normal Y operating? N

Normal operating?

N

Y

Check R/C Operating When turn off light in room

Check & Replace Baterry of R/C

If R/C operate, Explain the customer cause is interference from light in room.

Normal operating?

Replace Main B/D

☞A17

Check B+ 3 3.5V 5V On Main B/D

☞A4

Close

Normal Voltage?

Y

Check IR Output signal

N

Check 3.5v on Power B/D Replace Power B/D or Replace Main B/D (Power B/D don’t have problem)

Normal Signal?

Y

N Repair/Replace IR B/D

Close

N Replace R/C




LCD TV

Check input signal g

Signal input?

Established date

D. Function error

Error symptom

External device recognition error

Y

N

Check and fix external device/cable

Check technical information - Fix information - S/W Version

Technical information?

2013. 02. 02

Revised date

N

External Input and Component Recognition error

12/14

Replace Main B/D

Y

Fix in accordance with ith ttechnical h i l information

RGB,HDMI/ DVI, Optical Recognition error

Replace Main B/D




LCD TV

Identify nose type

Error symptom

Circuit noise

Mechanical noise

E. Noise

Established date

Circuit noise, mechanical noise

Revised date

Check location of noise

2013. 02. 02 13/14

Replace PSU(with LED driver) OR Replace LED driver

Check location of noise

※ Mechanical noise is a natural phenomenon, and apply the 1st level description. When the customer does not agree apply the process by stage agree, stage. ※ Describe the basis of the description in “Part related to nose” in the Owner’s Manual.

OR

OR

※ When the nose is severe severe, replace the module (For models with fix information, upgrade the S/W or provide the description) ※ If there is a “Tak Tak” noise from the cabinet, refer to the KMS fix information and then proceed as shown in the solution manual (For models without any fix information, provide the description)




LCD TV

F. Exterior defect

Error symptom

Zoom part with exterior damage

Exterior defect

Module damage

Replace module

Cabinet damage

Replace cabinet

Remote controller damage

Stand dent

Established date Revised date

2013. 02. 02 14/14

Replace remote controller

Replace stand



Contents of LCD TV Standard Repair Process Detail Technical Manual No.

Error symptom

1

Content

Page

Check LCD back light with naked eye

A1

LED driver B+ measuring method

A2

Check White Balance value

A3

Power Board voltage measuring method

A4

TUNER input signal strength checking method

A5

LCD-TV Version checking method

A6

LCD TV connection diagram

A7

Check Link Cable (LVDS) reconnection condition

A8 A9

12

Adjustment Test pattern - ADJ Key

A10

13

LCD TV connection diagram

A8

Check Link Cable (LVDS) reconnection condition

A8 A9

15


A10

16

Exchange T-Con Board (1)

A-1/5

17

Exchange T T-Con Con Board (2)

A 2/5 A-2/5

Exchange LED driver Board (PSU)

A-3/5

19

g Module itself ((1)) Exchange

A-4/5 /

20

Exchange Module itself (2)

A-5/5

2 3

A. Video error_ No video/Normal audio

4 6 7

A. Video error_ No video/Video lag/stop

9 10 11

14

18

A. Video error_Color error

A. Video error_Vertical/Horizontal bar, residual image image, light spot

Defected Type caused by T-Con/ Inverter/ Module

Remarks

Continue to the next page 15 / 37 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes


Contents of LCD TV Standard Repair Process Detail Technical Manual Continued from p previous page p g No.

Error symptom

Content

Page

21

Check front display LED

A11

22

Check power input Voltage & ST-BY ST BY 3 3.5V 5V

A12

Checking method when power is ON

A13

POWER BOARD voltage measuring method

A4

POWER OFF MODE checking method

A14

Checking method in menu when there is no audio

A15

Voltage and speaker checking method when there is no audio

A16

23

B. Power error_No power

24

Remarks

25 26

B. Power error_Off when on, off while viewing

28 C. Audio error_No audio/Normal video 29 30

C. Audio error_Wrecked audio/discontinuation

Voltage and speaker checking method in case of audio error

A16

31

D. Function error_ No response in remote controller, key error

Remote controller operation checking method

A17



Standard Repair Process Detail Technical Manual LCD TV

Error symptom Content

A. Video error_No video/Normal audio Check Back Light g On with naked eye y


2013. 02.15 A1

Power On -> > disjoint back case -> > check lighting from the module





A. Video error_No video/Normal audio Inverter B+ 24V measuring g method


2013. 02 .15 A2

Measure DC Voltage applying to Module from Power Board.

*Output Output Voltage is depend on inch 32 inch : 65.6~86.9V 39 inch : 117.3~142.2V 42 inch : 141.8~164.3V

*Output Voltage from Power Board -> supply to Module. Check Pin contacting statement and connection statement.




Error symptom

A. Video error_No video/Normal audio

Content

Check White Balance value


2013. 02.15 A3

Entry method 1. Press the ADJ button on the remote controller for adjustment. 2. Enter into W/B ADJUST 3. After recording the R, G, B (GAIN, Offset) value of Color Temp (Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD. 4. Confirm W/B ADJUST “OK” at In-start menu.




Error symptom

A. Video error_No video/ Audio

Content

Power Board voltage g measuring g method


2013. 02.15 A4

Edge LED Check the DC 24V 24V, 12V 12V, 3 3.5V. 5V 18 Pin (Power Board ↔ Main Board) - 공통

1

Power on

2

DRV ON

3

3.5V

4

PDIM

5

3.5V

6

N/C

7

GND

8

GND

9

24V

10

24V

11

GND

12

GND

13

12V

14

12V

15

12V

16

N.C

17

GND

18

GND





A. Video error_Video error, video lag/stop LCD-TV Version checking method


2013. 02.15 A6

1. Checking method for remote controller for adjustment

Version

Press the IN-START with the remote controller for adjustment





A. Video error _Vertical/Horizontal bar, residual image, light spot LCD TV connection diagram g (1) ( )


2013. 02.15 A7

As the part connecting to the external input, check the screen condition by signal





A. Video error_Color error Check and replace p Link Cable(LVDS) ( ) and contact condition


2013. 02.15 A8/A9

1. Check and replace LVDS Cable 2. Check LVDS connection condition




Error symptom

A. Video error_Color error

Content



2013. 02.15 A10

You can view 6 types of patterns(with White and Full White) using the ADJ Key Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..) 4.Video error (Classification of MODULE or Main-B/D!)



Appendix : Exchange T-Con Board (1)

Solder defect, CNT Broken



S ld d Solder defect, f t CNT B Broken k

TT-Con T-Con TSolder Con Defect Defect, Defect Defect, CNT CNT Broken Broken SCon ld Defect, d defect, f tCNT CNT B Broken k T-Con Broken

Abnormal Power Section

Solder defect, Short/Crack





Appendix : Exchange T-Con Board (2)



GRADATION



Fuse Open, p , Abnormal p power section

Abnormal Display

Noise

GRADATION



Appendix : Exchange PSU(LED driver)

No Light

Dim Light

Dim Light

Dim Light

No picture/Sound Ok 27 / 37 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes


Appendix : Exchange the Module (1)

Panel Mura, Light leakage

Crosstalk

Panel Mura, Light leakage

Press damage

Press damage

Crosstalk

Un-repairable Cases In this case please exchange the module.

Press damage 28 / 37 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes


Appendix : Exchange the Module (2)

Vertical Block Source TAB IC Defect

Horizontal Block Gate TAB IC Defect

Vertical Line Source TAB IC Defect

Horizontal Block Gate TAB IC Defect Gate TAB IC Defect

Vertical Block Source TAB IC Defect

Horizontal line Gate TAB IC Defect Gate TAB IC Defect

Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect 29 / 37 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes



Error symptom

B. Power error _No power

Content

Check front display p y LED


2013. 02.15 A11

ST-BY condition: Red




Error symptom


Content

Check power input voltage and ST-BY 3.5V


2013. 02.15 A12


1

Power on

2

DRV ON

3

3.5V

4

PDIM

5

3.5V

6

N/C

7

GND

8

GND

9

24V

10

24V

11

GND

12

GND

13

12V

14

12V

15

12V

16

N.C

17

GND

18

GND




Error symptom


Content

Checking g method when power p is ON


2013. 02.15 A13


1

Power on

2

DRV ON

3

3.5V

4

PDIM

5

3.5V

6

N/C

7

GND

8

GND

9

24V

10

24V

11

GND

12

GND

13

12V

14

12V

15

12V

16

N.C

17

GND

18

GND





B. Power error _Off when on, off whiling viewing POWER OFF MODE checking g method


2013. 02. 15 A14

Entry method 1. Press the IN-START button of the remote controller for adjustment 2. Enter to ENGINEER OPTION 3. Enter and Check POWER OFF HISTORY



Standard Repair Process Detail Technical Manual Error symptom

LCD TV

Content

C. Audio error_No audio/Normal video Checking g method in menu when there is no audio


2013. 02.15 A15

Checking method 1. Press the MENU button on the remote controller 2. Select the AUDIO function of the Menu 3. Check whether TV Speaker is on




Error symptom

C. Audio error_No audio/Normal video

Content

Voltage and speaker checking method when there is no audio


2013. 02. 15. A16

Check the DC 24V, 12V, 3.5V. 18 Pin (Power Board ↔ Main Board) - 공통 ②

② 1

Power on

2

DRV ON

3

3.5V

4

PDIM#1

5

3.5V

6

PDIM#2

7

GND

8

GND

9

24V

10

24V

11

GND

12

GND

13

12V

14

12V

15

12V

16

N.C

17

GND

18

GND

①

③

Checking order when there is no audio ① Check the contact condition of or 24V connector of Main Board ② Measure the 24V input voltage supplied from Power Board (If there is no input voltage, remove and check the connector) ③ Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal, the speaker is normal. 35 / 37 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes




D. Function error_ No response in remote controller, key error Remote controller operation checking method


2013. 01 .09 A17

P600

②

③

①

1 2 3 4 5 6 7 8 9

GND KEY1 KEY2 3.5V_ST GND LED_R/BUZZ IR GND GND

Checking order 1, 2. Check IR cable condition between IR & Main board. 3. Check the st-by 3.5V on the terminal 4.



LG+32LN5100+Ch+LL35B.pdf

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