Related Manuals for LG 20LC1R-ZG
Summary of Contents for LG 20LC1R-ZG
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Page 1: Service Manual
LCD TV SERVICE MANUAL CHASSIS : CL-81 MODEL : 20LC1R-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 SVC REMOCON ..................14 TROUBLE SHOOTING ................15 BLOCK DIAGRAM...................19 WIRING DIAGRAM ..................21 EXPLODED VIEW .................. 22 REPLACEMENT PARTS LIST ............... 24 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 circuit foil.
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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 PERI TV Connector Full SCART : 1 Rear Ear-phone output 2 Carrier Stereo BG, DK NICAM Stereo BG, I, LL' 2 Carrier Daul BG, DK NICAM Daul...
- 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 ≤ 65W Normal On/On Active BLUE ≤ 1W(110V) Stand By Off/Off ORANGE ≤ 1W(220V) Cut-off Switch off ITEM Spectification Remark D-SUB Pin Configuraion 1: RED 2: Green 3: Blue 4: ID2(GND)
- Page 11 9. Preset CH information Sound PIF[MHz] SYSTEM Video NAME System Mode LGE KUMI PR 0 45.25 PAL-BG PHILIPS MONO C 01 PR 1 575.25 SECAM-DK DIGITAL DUAL C 34 PR 2 175.25 PAL-BG PHILIPS STEREO FLOF C 05 PR 3 231.25 PAL-I FUBK...
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Page 12: Adjustment Instruction
ADJUSTMENT INSTRUCTION 3.1.2 ADC Process (Board Adjustment line process) 1. Application 1) Auto Gain/Offset Adjustment This document is applied to 20.1" LCD TV which is Convert to AV in Input-Mode manufactured in Monitor Factory or is produced on the basis of this data. - Page 13 3.2 Total Assembly line process 3.3 Option configuration 3.2.1 Adjustment Preparation Press IN-START Key by using the SVC Remote IIC_SW should set to "0" Controller and Press option value, after then, configure the option data that is written in the product spec and Above 30 minutes H/run in RF no signal press MENU key.
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Page 14: 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 15: 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 Q402 Fail Pass Check Output of Change U406 U406 Fail Pass Change LED Assy Check LED Assy Fail Pass... - Page 16 :[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 17 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 TU701 Fail Fail Change the defect part Pass Change L108, L109, Check the signal of L110, L112, R194, R198, L108, L109, L110, L112 Fail...
- Page 18 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...
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Page 19: Block Diagram
BLOCK DIAGRAM - 19 -... - Page 20 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...
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Page 21: Wiring Diagram
WIRING DIAGRAM 6631T20037Q-3P INTERFACE BOARD Only 20LC1R*_LPL Module 6631900037A-50P-LPL 6631900037B-50P-AUO 6631T20034M-11P 6631900026A-4P 6631900026A-4P 6631T20029S-5P 6631900024D-3P - 21 -... -
Page 22: Exploded View
EXPLODED VIEW - 22 -... -
Page 23: Exploded View Parts List
DESCRIPTION PART NO. 30919D0001D CABINET ASSEMBLY, 20LC1R-ZB(TITAN) BRAND 3090TKD006 C/SKD 6304FLP188A LCD(LIQUID CRYSTAL DISPLAY), LC201V02-A3KA LG PHILPS TFT COLOR PB FREE MODULE , SS D-IC 3809900002F BACK COVER ASSEMBLY, 20LC1R-ZG NON C/SKD 3043900010A TILT SWIVEL ASSEMBLY, 20LC1 NON HINGE ASSY... -
Page 24: 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 25 DATE: 2005. 09. 23. DATE: 2005. 09. 23. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C719 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C3012 0CH6470K416 47PF 2012 50V 5% NP0 R/TP C720 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
- Page 26 DATE: 2005. 09. 23. DATE: 2005. 09. 23. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C359 0CE107WF6DC 100UF MVK 16V 20% R/TP(SMD) U404 0IRH033200A BA033FP-E2 MOLD-3 TP REGULA C371 0CE107WF6DC 100UF MVK 16V 20% R/TP(SMD) U409 0ISS780500H...
- Page 27 DATE: 2005. 09. 23. DATE: 2005. 09. 23. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q112 0TR162309CA KSC1623 TP SAMSUNG SOT23 N R177 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D Q704 0TR162309CA KSC1623 TP SAMSUNG SOT23 N...
- Page 28 DATE: 2005. 09. 23. DATE: 2005. 09. 23. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R383 0RH1502D622 15K OHM 1 / 10 W 2012 5.00% R234 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP R385 0RH1002D622 10K OHM 1 / 10 W 2012 5.00%...
- Page 29 DATE: 2005. 09. 23. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION OTHERs X301 6202TST003G HC-49/SM5H KONY 24.576MHZ + U303 6620F00017A CCSD-32T-SM WOOYOUNG 32P PL TU701 6700VS0003H TAEW-G053P LGIT MULTI FS PH CONTROL BOARD C501 0CN1040K949 "0.1UF D 50V 80%,-20% F(Y5V)" C504 0CN1040K949 "0.1UF D 50V 80%,-20% F(Y5V)"...
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- Page 35 Aug., 2005 P/NO : 38289S0022C Printed in Korea...