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LG 32LC3R Service Manual
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LG 32LC3R Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LP61A
FACTORY MODEL : 32LC3R-ZJ
MODEL : 32LC3R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
e-mail:http://www.LGEservice.com/techsup.html
R
website:http://biz.LGservice.com

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Summary of Contents for LG 32LC3R

  • Page 1 LCD TV SERVICE MANUAL CHASSIS : LP61A FACTORY MODEL : 32LC3R-ZJ MODEL : 32LC3R CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 SAFETY PRECAUTIONS ................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................19 BLOCK DIAGRAM...................22 EXPLODED VIEW .................. 24 REPLACEMENT PARTS LIST ............... 26 SVC. SHEET ....................- 2 -...

  • Page 3: Safety Precautions

    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 X-RADIATION, Shock, Fire, or other Hazards.
  • Page 4 SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service unit under test. manual and its supplements and addenda, read and follow the 2. After removing an electrical assembly equipped with ES SAFETY PRECAUTIONS on page 3 of this publication. devices, place the assembly on a conductive surface such as NOTE: If unforeseen circumstances create conflict between the aluminum foil, to prevent electrostatic charge buildup or...
  • Page 5 IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through Circuit Board Foil Repair which the IC leads are inserted and then bent flat against the Excessive heat applied to the copper foil of any printed circuit circuit foil. When holes are the slotted type, the following technique board will weaken the adhesive that bonds the foil to the circuit should be used to remove and replace the IC.

  • Page 6: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test method This specification is applied to LP61A chassis. 3.1 Performance : LGE TV test method followed 2. Requirement for Test 3.2 Demanded other specification Safety : CE, IEC Specification Testing for standard of each part must be followed in below EMC : CE, IEC...
  • Page 7 6. Chroma & Brightness (Optical) Item Unit Maker Remark Luminance cd/m AUO 26", 32", 37" - 50cm from the surface LPL 26", 32" - Full White Pattern CMO 27", 32" View angle (R/L, U/D) 176/176 degree AUO 26" - CR >10 170/170 AUO 32"...
  • Page 8 7. Component Video Input (Y, PB, PR) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 720x480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 720x480 15.75 60.00 13.514 SDTV, DVD 480I(525I) 720x576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 50Hz 720x480 31.47 59.94 27.000 SDTV 480P 720x480 31.50 60.00...

  • Page 9: Adjustment Instruction

    *Use for Windows 95/98 : Setup_LptDrv_v0104_9x.exe LN61A chassis(HURRICANE 3 MIDDLE) by manufacturing *Use for Windows 2000/XP : Setup_LptDrv_v0202_XP_2000.exe LG TV Plant all over the world. *Use for Windows NT : Setup_LptDrv_v0104_NT.exe 2. Specification (3) Verification (Start > Programs > Micronas > Visual 2.1 Because this is not a hot chassis, it is not necessary to...
  • Page 10 (3) Double click the blue box and confirm "Bootloader Version" as 40. (4) Click the "Erase Flash" button => Select "Bootloader.bat" file(install > VCTP_download > Bootloader) => Push "OK" (5) Double click the download file low, then "edit" window will be opened =>...
  • Page 11 (8) Click OK button at the "edit window" (2) Supply the power (Stand-by 5V) and wait for 3 seconds. (3) Push the S/W off (Disconnect SCL to GND using switch at jig) (9) Under Downloading process Push S/W (10) If download is failed, for example "No acknowledge from slave".
  • Page 12 (6)Click the "Erase Flash" button (10) Click OK button at the "edit window" (7) Double click the download file low then, "edit" window will be opened (11) Under Downloading progress (8) Chick the choice button I n the "edit window", then "file choice window’...
  • Page 13 (3) Execute ‘Download_CS.vi2c’ program in PC, then a (8) Chick the choice button I n the "edit window", then main widow will be opened. "file choice window’ will be opened Double click (4) Click "GO" button (9) Choose the Hex file in folder and execute downloading with click "open button"...
  • Page 14 4.1.2. Channel memory download 4.1.3. Tool Option Area Option Change (1) Connect the download jig to D-sub jack Before PCBA check, have to change the Tool option and (2) Execute ‘Channal.vi2c’ program in PC, then a main Area option window will be opened. Option values are below (If on changed the option, the input menu can differ the model spec.)
  • Page 15 Remocon before Adjustment of W/B, the Baud rate & PSM, CSM will change 115200bps, a. Product ID Standard (MJ: Optimum), Normal] Product ID Model Name EDID TABLE 32LC3R 30087(A) 7587 8775 30088(D) 7588 8875 b. Serial No : Controlled on production line c.
  • Page 16 6.3 Adjustment of White Balance (For Manual adjustment) - Operate the zero-calibration of the CA-110, then stick sensor to LCD module when you adjust. - For manual adjustment, it is also possible by the following sequence 1) Select RF no signal by pressing POWER ON key on remote control for adjustment then operate heat run more than 15 minutes.
  • Page 17 7. Shipping Conditions Item Setting Remarks Station Auto Programme System Storage from Search To start Manual Programme Storage System Band V/UHF Channel Fine Search Name _ _ _ _ _ Programme Edit To set Favorite programme -- ----- Ch memory Picture Dynamic Normal...
  • Page 18 SVC REMOCON FUNTION REAMARK To turn the TV on or off POWER To turn the TV on automatically if the power is supplied to the TV. (Use the POWER ON POWER key to deactivate): It should be deactivated when delivered. To activate the mute function.

  • Page 19: Troubleshooting

    TROUBLESHOOTING 1. No power (1) Symptom 1) Front LED is No light 2) The Set doesnt discharge little (2) Check process Is plug in power cord? Plug in a power cord Check P200 Voltage (P-ST_5V)? Check the PSU Check X-tal X600 (19.6608MHz) Check X-tal X600 Check IC600 Voltage (3.3V) Check IC600...
  • Page 20 2. No picture (1) Symptom 1) Some mode doesnt display. 2) Front LED is green 3) The set still discharge a little (2) Check follow 1) RF-mode doesnt display Are good some Are input voltage, I2C, Is the LVDS cable Is the Tuner cable Is VCT-P IC good? elements(C, R, L, or...
  • Page 21 3. No Sound (1) Symptom 1) Front LED is Green 2) The Set display a screen, but a sound doesnt output (2) Check follow 1) Speaker part Are Speaker Cables Are Speaker Cables Are Speaker units Good? connect normally? good? Insert the cable Exchange the Exchange the cable...

  • Page 22: Block Diagram

    BLOCK DIAGRAM - 22 -...
  • Page 23 BLOCK DIAGRAM DESCRIPTION 1. Video control and display data Video signal is received from TUNER, AV port(AV1,AV2,S-Video) and goes to the one-chip video decoder (VCTI) which separate the R,G,B signal and passes on the signal to AD converter(AD9883) through the video switch(SM5301).
  • Page 24 - 24 -...

  • Page 25: Exploded View

    PCB Assembly,Sub, SUB M.I LP61A 32LC3R AEUULHX Preamp+LED EBR32491401 PCB Assembly,Sub, SUB T.T LP61A 32LC3R-ZJ Side-AV CKD EBR30713301 Hand Insert PCB Assembly,Sub, SUB M.I LP61A 32LC3R . 32LC3R Side-AV M.I AGU30353102 Plate Assembly, ASSY 32LC3, C/SKD 6709900016C SMPS,AC/DC, LGLP2637HEP 90.0VTO264.0V 215W 47TO63HZ UL/CSA/SEMKO YY / AT / H&E...

  • Page 26: 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 27 DATE: 2006. 07. 10. DATE: 2006. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1013 0CK104CK56A 0603B104K500CT 100nF 10% 50 C417 0CK102CK56A 0603B102K500CT 1nF 10% 50V C1014 0CK104CK56A 0603B104K500CT 100nF 10% 50 C419 0CK104CK56A...
  • Page 28 DATE: 2006. 07. 10. DATE: 2006. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C856 0CK105CF94A 0603F105Z160CT 1uF -20TO+80 C617 0CK104CK56A 0603B104K500CT 100nF 10% 50 C859 0CK105CF94A 0603F105Z160CT 1uF -20TO+80 C618 0CK104CK56A 0603B104K500CT 100nF 10% 50...
  • Page 29 DATE: 2006. 07. 10. DATE: 2006. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D905 0DD200009AF RU2M 400V 1.2V 10UA 20A 400 L1007 6210TCE001G HH-1M3216-501JT 500OHM 3.2X D906 0DD200009AF RU2M 400V 1.2V 10UA 20A 400 L1008...
  • Page 30 DATE: 2006. 07. 10. DATE: 2006. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION RESISTORs L106 0LCML00020G MLI-201209-3R3K 3.3UH 10% 0 L107 0LCML00020G MLI-201209-3R3K 3.3UH 10% 0 AR600 0RHZTCZ001D RCA86TRJ22R0 22OHM 5% 1/16W L108 0LCML00020G...
  • Page 31 DATE: 2006. 07. 10. DATE: 2006. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R164 0RJ2001D677 MCR03EZPJ202 2KOHM 5% 1/10W R352 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R165 0RJ0822D677 MCR03EZPJ820 82OHM 5% 1/10W R355 0RJ4700D677...
  • Page 32 DATE: 2006. 07. 10. DATE: 2006. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R806 0RJ1000D477 MCR03EZPF101 100OHM 1% 1/10 R227 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R807 0RJ1000D477 MCR03EZPF101 100OHM 1% 1/10 R228 0RJ4701D677...
  • Page 33 DATE: 2006. 07. 10. DATE: 2006. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R634 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R733 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R635 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R734 0RJ1000D677...
  • Page 34 DATE: 2006. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q202 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50 R200 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R201 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R202 0RH6800D622 MCR10EZHJ681 680OHM 5% 1/8W R203 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2...
  • Page 38 Jul., 2006 P/NO : MFL30105534 Printed in Korea...

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