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LCD TV
SERVICE MANUAL
CHASSIS : CL-81
MODEL : 15LC1R-ZG
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

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   Summary of Contents for LG 15LC1R-ZG

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : CL-81 MODEL : 15LC1R-ZG CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 DISASSEMBLY ..................6 SPECIFICATION ..................7 ADJUSTMENT INSTRUCTION ...............12 SERVICE OSD ..................14 SVC REMOCON ..................15 TROUBLE SHOOTING ................16 BLOCK DIAGRAM...................20 WIRING DIAGRAM ..................22 EXPLODED VIEW .................. 23 REPLACEMENT PARTS LIST ............... 25 SVC. SHEET ....................- 2 -...

  • Page 3: Product Safety

    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 Replacement Parts List. 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.

  • Page 4: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service prevent potential shock reasons prior to applying power to the manual and its supplements and addenda, read and follow the unit under test. SAFETY PRECAUTIONS on page 3 of this publication. 2.

  • Page 5

    IC Remove/Replacement 3. Solder the connections. Some chassis circuit boards have slotted holes (oblong) through CAUTION: Maintain original spacing between the replaced which the IC leads are inserted and then bent flat against the component and adjacent components and the circuit board to prevent excessive component temperatures.

  • Page 6: Disassembly

    DISASSEMBLY #2 Detached stand assy (Remove the screws) #3 Disassembly stand assy #4 Detached Backcover (Remove the screw) #5 Open the Backcover's latch with jig #6 Unlock latch between Cabinet and Backcover - 6 -...

  • Page 7: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range This specification is applied to CL-81 chassis. 2. Requirement for Test Testing for standard of each part must be followed in below condition. (1) Temperature: 25°C ±...

  • Page 8

    5. Reference table-Function Item Specification Remark Teletext TOP, FLOF TOP(option) REMOCON NEC Code AV Input Rear S-Video Input Rear Component Input Rear(Option, Non EU) PERI TV Connector Full SCART : 1 Rear(Option EU) RGB Input D-Sub 15 pin H/P Input Rear PC Audio Input RS-232...

  • Page 9

    7. Outgoing Condition Item Condition Remark Power Volume Level Main Picture Input Main Last Channel Pr 01 Mute Station Auto Program Manual Program Program Edit Favorite Program None Picture Dynamic Normal Dynamic Contrast Brightness Colour Sharpness Tint NTSC OPTION Sound Flat Balance Special...

  • Page 10

    8.Engineering Specification 8-1.General Specification Item Specification Remark Power Supply LED Color H/V Sync Video Power Consumption ≤ 40W Normal On/On Active BLUE Off/On ≤ 2W Stand By On/Off AMBER Off/Off Cut-off Switch off ITEM Spectification 1: RED 2: Green 3: Blue 4: ID2(GND) 5: S.T(GND) 6: RED GND...

  • Page 11: Svc Menu Option

    9. SVC MENU OPTION Item Condition Remark Option1 ACMS Yes : ZG NO : TG TEXT Refer remark TOP: below nation GERMANY BENELUX SWITZERLAND FINLAND AUSTRIA POLAND SWEDEN ITALY NORWAY SPAIN FLOP: Except above nation CH+AU Refer remark YES : China, Australia NO : Except above area AGC-L Option2...

  • Page 12: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application 3.3 ADC Process "IIC_ SW" must set "0"for Auto Adjust (After ISP, This document is applied to 15" LCD TV which is automatically set "0") manufactured in Monitor (or TV) Factory or is produced on the basis of this data.

  • Page 13

    3.4 Function Check 4.4 Other quality Confirm that each items satisfy under standard condition 3.4.1 DDC2B test that was written product spec. "IIC_ SW" must set "1" (After ADC, automatically set "1") Confirm Video and Sound at each source Execute DDC2B Scan Test 1) AV Select input AV1 and whether picture is displayed or not 3.4.2 Check display and sound...

  • Page 14: Service Osd

    SERVICE OSD Description of operation Service Menu - [00 0 0 0000] : Country Option Code - Option 1 ~ 4 : Detail Country Option 1~4(Refer Adjust spec sheet) - Auto ADC : Adjust ADC in PC or AV by SVC Remote Control - Audio Setup : Only Engineering.

  • Page 15: Svc Remocon

    SVC REMOCON FUNTION REMARK POWER To turn the TV on or off MUTE To activate the mute function. P-CHECK To check TV screen image easily. Shortcut keys S-CHECK To check TV screen sound easily Shortcut keys ARC(23inch) To select size of the main screen Shortcut keys (Auto, 4:3, 16:9, 14:3, Zoom, Cinema Zoom) CAPTION...

  • Page 16: Troubleshooting

    TROUBLESHOOTING No power :[A]Process (LED indicator off) Check short of main B/D Check 15V or 5V or Change Lips Fail of Lips Pass Check Output of Change Q402 Fail Q402 Pass Check Output of Change U406 U406 Fail Pass Change LED Assy Check LED Assy Fail Pass...

  • Page 17

    :[B]Process No Raster Check LED Status Repeat A PROCESS on display unit Fail Pass Check Change U401~U405, U401~U405, U407, U409 U407, U409 Fail Pass Check the input/ Change U301 Output of U301 Fail Pass Check inverter Change inverter Connector or inverter connector or inverter Fail Pass...

  • Page 18

    No Raster on AV Signal No Raster on TV(RF) signal (SCART, CVBS, S-VHS) Check 5V, 33V of TU701 Repeat Check the output of Re-soldering or [A] Process Fail TU701 Fail Change the defect part Pass Change L108, L109, Check the signal of L110, L112, R194, R198, L108, L109, L110, L112 Fail...

  • Page 19

    No Sound Check the Change source input input source Fail Pass Re-soldering or Check the input/output Change the defect part of U301 Fail Check X301 Pass Re-soldering or Check the input/output Change the defect part of U201 Fail Pass Check the speaker Change speaker Fail Pass...

  • Page 20: Block Diagram

    BLOCK DIAGRAM - 20 -...

  • Page 21

    BLOCK DIAGRAM DESCRIPTION Power Supply Block (LIPS) LVDS Rx (DTC34LF86L) This Block Generates DC Voltage (5V,15V) to Main It is composed of DTC34LF86L/THC63LVDF84B. Control system from AC Power (100-240 V, 50/60 Hz, The LVDS Rx converts the LVDS data streams back 1.0A) into 24bits of CMOS/TTL data with Also it has the inverter function that converts input...

  • Page 22: Wiring Diagram

    WIRING DIAGRAM 6631T20010F-3P 6631T11012R-20P 6631900042B-11P 6631V00040A-2P 6631900026B-4P 6631900026B-4P 6631900024D-3P 6631T20029S-5P - 22 -...

  • Page 23: Exploded View

    EXPLODED VIEW - 23 -...

  • Page 24: Exploded View Parts List

    PART NO. 30919B0002E CABINET ASSEMBLY, 15LC1 BRAND . TITAN SILVER C/SKD 6304FLP234A LCD(LIQUID CRYSTAL DISPLAY), LC150X02-TL01 LG PHILPS TFT COLOR TN LAMP MULTI 3809900013H BACK COVER ASSEMBLY, 15LC1 2PHONE FOR RZ C/SKD 3043900039A TILT SWIVEL ASSEMBLY, 15LC1 . STAND BODY ASSY 3043900040A TILT SWIVEL ASSEMBLY, 15LC1 .

  • Page 25: Replacement Parts List

    REPLACEMENT PARTS LIST For Capacitor & Resistors, the CC, CX, CK, CN, CH : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit in the CQ : Polyestor RS : Metal Oxide Film P/No. means as follows; CE : Electrolytic RN : Metal Film CF : Fixed Film RH : CHIP, Metal Glazed(Chip)

  • Page 26

    DATE: 2005. 11. 13. DATE: 2005. 11. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C744 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C115 0CH6470K416 47PF 2012 50V 5% NP0 R/TP C117 0CK105DH56A 1UF 2012 25V 10% X7R R/TP...

  • Page 27

    DATE: 2005. 11. 13. DATE: 2005. 11. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C3094 0CE107WF6DC 100UF MVK 16V 20% R/TP(SMD) ZD101 0DZ560009DA UDZ S 5.6B TP ROHM-K SOD323 C311 0CE107WF6DC 100UF MVK 16V 20% R/TP(SMD) ZD105...

  • Page 28

    DATE: 2005. 11. 13. DATE: 2005. 11. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L302 6200J00005E HH-1M2012-601JT CERATEC R/T R1028 0RH3900D622 390 OHM 1 / 10 W 2012 5.00% L305 6200J00005E HH-1M2012-601JT CERATEC R/T...

  • Page 29

    DATE: 2005. 11. 13. DATE: 2005. 11. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R226 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R706 0RH1000D622 100 OHM 1 / 10 W 2012 5.00% R227 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D...

  • Page 30

    DATE: 2005. 11. 13. DATE: 2005. 11. 13. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R301 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP Q551 0TR390409AE FAIRCHILD KST3904(LGEMTF) T R3010 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP...

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  • Page 36

    Nov., 2005 P/NO : 38289S0022X Printed in Korea...

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