LG 32LX4DC-UB Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. LCD TV
  5. 32LX4DC-UB
  6. Service manual
LG 32LX4DC-UB Service Manual

LG 32LX4DC-UB Service Manual

Chassis: la53a
Hide thumbs
Table of Contents

Advertisement

Quick Links

LCD TV

SERVICE MANUAL

CHASSIS : LA53A
MODEL : 32LX4DC-UB/32LX4DCS-UB
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

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 32LX4DC-UB and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for LG 32LX4DC-UB

Summary of Contents for LG 32LX4DC-UB

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : LA53A MODEL : 32LX4DC-UB/32LX4DCS-UB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION..............11 TROUBLE SHOOTING ................14 BLOCK DIAGRAM...................17 EXPLODED VIEW .................. 18 EXPLODED VIEW PARTS LIST ..............19 REPLACEMENT PARTS LIST ............... 20 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 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

    32 inch wide Aspect Ratio 16:9 Tuning System LCD Module LC320W01-SL11 (1366x768) LG Philips LCD Operating Environment Temp. : 0 ~ 40 deg Humidity : ~ 80 % Storage Environment Temp. : -20 ~ 50 deg Humidity : 10 ~ 90 % 4.
  • Page 7 Block Ch. Select Movie Rating G/PG/PG-13/R/NC-17/X TV Rating-Children Age/Fantasy Violence TV Rating-General Age/Dialogue/Language/Sex/Violence Input.Block Video, Front Video, Component1, RGB, DVI Etc. Comb Filter 3D Comb 3D comb for main display, 4H comb for sub display Remocon LG code - 7 -...
  • Page 8 5. External Input Format Component Video Input (Y, CB/PB, CR/PR) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 640x480 15.73 60.00 SDTV ,DVD 480I 704x480 31.47 59.94 SDTV 480P 1280x720 45.00 60.00 HDTV 720P 1280x720 44.96 59.94 HDTV 720P 1920x1080 33.75 60.00 HDTV 1080I 1920x1080 33.72...
  • Page 9 DVI Iinput (PC/DTV) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 640x350 31.468 70.09 25.17 640x480 31.469 59.94 25.17 VESA(VGA) 640x480 31.861 72.80 31.50 VESA(VGA) 640x480 37.500 75.00 31.50 VESA(VGA) 800x600 35.156 56.25 36.00 VESA(SVGA) 800x600 48.077 72.18 50.00 VESA(SVGA) 800x600 46.875 75.00 49.50 VESA(SVGA)
  • Page 10 7. General Specifications Item Unit Remark Active Screen Size 750.62(diagonal) 29.53 inches Outline Dimension 697.3(H)x431.8(V)x50.9(D) Pixel Pitch 0.5025x0.1675xRGB Pixel Format 1280(H)x768(V) stripe arrangement Color Depth 8bit 16.7 Mbit Luminance ,White 500 (center 1 point typ) cd/m2 Viewing Angle (CR>10) R/L 176(Typ),U/P 176(Typ) degree Power Consumption 99.16...

  • Page 11: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 4. ADC-Set Adjustment These instructions are applied to all of the LCD TV, LA53A. 4-1. Synopsis The menu of MST3385A-set let optimum black level and Gain automatically set up during changing from Analog mode to 2.
  • Page 12 (D) Readjust after confirming the case Pattern or (4) When the automatic adjustment is over, 'RF Configuration adjustment condition where the adjustment errors. Success’ is displayed. If the adjustment has errors, 'Video (E) After adjustment is complete, exit the adjustment mode Configuration Error’...

  • Page 13: Svc Remocon

    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 14: Troubleshooting

    TROUBLESHOOTING No power Power supply Check Connector connection connector connection status. Fail Pass Connection Stand voltage check: of power supply part : D-board P100+5V-STDBY Check wiring status of the 13-pin Fail connector Pass Pass Replace Power_board Connection Stand voltage check: of power supply part : A-board P502 #5Pin 5V Check wiring status of the 15-pin...
  • Page 15 No Raster Stand by voltage : Check No Power Replace Power board D_board P100 +12V-P (Go to Power) Pass Fail Pass Stand by voltage : Check No Power D_board Q202 Replace Q202/Q200 (Go to Power) Pass Fail #5, #6, #7, #8 12V Pass Replace D_board Fail...
  • Page 16 No Sound Power board 15Pin Check Sound supply: Connector Replace Connector A_board P502 #1, #2 18V Fail Fail check Pass Pass Replace Power Board Speaker output check : Replace A_Board Is there waveform of P600/P601 #1? Fail Pass Replace Speaker - 16 -...

  • Page 17: Block Diagram

    BLOCK DIAGRAM(LCD Built-In) - 17 -...

  • Page 18: Exploded View

    - 18 -...

  • Page 19: Exploded View Parts List

    LCD,Module-TFT, LC320W01-SL18 WXGA 32INCH 1366X768 500CD COLOR 72% 16/9 800:1 A-TW Pol. P6 LG PHILIPS LCD or EAJ30768801 LCD Module, LC320W01-SL14 WXGA 32.0INCH 1366X768 500CD COLOR 72% 16/9 800 NEC Lamp LG PHILIPS LCD . or 6304FLP359A LCD,Module-TFT, LC320W01-SL11 DRIVER 32INCH 1366X768 500CD COLOR 72% 16/9 800:1 - LG PHILIPS LCD 3809900197M Cover Assembly, 32LX4DC/S-UA/UB COMMERCIAL 32"...

  • Page 20: 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 21 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C505 0CH3104K566 0805B104K500CT 100nF 10% 50 C925 0CH3104K566 0805B104K500CT 100nF 10% 50 C506 0CH2152K516 0805B152K500CT 1.5nF 10% 50 C100 0CH5150K416 C2012C0G1H150JT 15pF 5% 50V C508...
  • Page 22 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C538 0CH2474F566 0805B474K160CT 470nF 10% 16 ZD312 0DZ510009EE UDZS5.1B 5.1V 4.98TO5.2V 80 C539 0CK222DK56A CS2012X7R222K500NR 2.2nF 10 ZD313 0DZ510009EE UDZS5.1B 5.1V 4.98TO5.2V 80 C540...
  • Page 23 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L203 6210TCE001A HB-1S2012-080JT 8OHM 2X1.25 Q204 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50 L206 6210TCE001A HB-1S2012-080JT 8OHM 2X1.25 Q205 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50 L207...
  • Page 24 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R333 0RH0752D622 MCR10EZHJ750 75OHM 5% 1/8W R535 0RH2201D622 MCR10EZHJ222 2.2KOHM 5% 1/8 R335 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W R536 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R340...
  • Page 25 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R774 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R348 0RH0822D622 MCR10EZHJ820 82OHM 5% 1/8W R775 0RH0752D622 MCR10EZHJ750 75OHM 5% 1/8W R350 0RH0822D622 MCR10EZHJ820 82OHM 5% 1/8W...
  • Page 26 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R622 0RH0101D622 MCR10EZHJ1R0 1OHM 5% 1/8W 2 R914 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R627 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R915...
  • Page 27 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C144 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% C1008 0CK104CK56A 0603B104K500CT 100nF 10% 50 C145 0CH8476F691 MVK6.3TP16VC47M 47uF 20% 16 C1009 0CK104CK56A 0603B104K500CT 100nF 10% 50 C147...
  • Page 28 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1127 0CK104CK56A 0603B104K500CT 100nF 10% 50 C333 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1128 0CK104CK56A 0603B104K500CT 100nF 10% 50 C334 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1129...
  • Page 29 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C540 0CK104CK56A 0603B104K500CT 100nF 10% 50 C703 0CK104CK56A 0603B104K500CT 100nF 10% 50 C541 0CK104CK56A 0603B104K500CT 100nF 10% 50 C704 0CK104CK56A 0603B104K500CT 100nF 10% 50 C542...
  • Page 30 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C840 0CK104CK56A 0603B104K500CT 100nF 10% 50 C992 0CK104CK56A 0603B104K500CT 100nF 10% 50 C903 0CK104CK56A 0603B104K500CT 100nF 10% 50 C993 0CK104CK56A 0603B104K500CT 100nF 10% 50 C910...
  • Page 31 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C237 0CK104CK56A 0603B104K500CT 100nF 10% 50 C957 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C238 0CK104CK56A 0603B104K500CT 100nF 10% 50 C963 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C241...
  • Page 32 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IC501 0IMCRSJ001A SC1565IST-1.8 2.2TO5.5V 1.8 L402 0LCML00003B MLB-201209-0120P-N2 120OHM IC601 0IMCRSJ001A SC1565IST-1.8 2.2TO5.5V 1.8 L405 0LCML00003B MLB-201209-0120P-N2 120OHM IC800...
  • Page 33 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L807 6210TCE001A HB-1S2012-080JT 8OHM 2X1.25 Q102 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50 L808 6210TCE001A HB-1S2012-080JT 8OHM 2X1.25 Q103 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50 L809...
  • Page 34 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1038 0RJ3900D677 MCR03EZPJ391 390OHM 5% 1/10 R236 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1044 0RJ0682D677 MCR03EZPJ680 68OHM 5% 1/10W R314 0RJ4701D477...
  • Page 35 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R549 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R945 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R550 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R956 0RJ2202D677...
  • Page 36 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1081 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R216 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1092 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R217 0RJ0222D677...
  • Page 37 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R383 0RJ1000D477 MCR03EZPF101 100OHM 1% 1/10 R488 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R384 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R490 0RJ0222D677...
  • Page 38 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R723 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R948 0RH0912D622 MCR10EZHJ910 91OHM 5% 1/8W R724 0RJ4702D677 MCR03EZPJ473 47KOHM 5% 1/10 R949 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2...
  • Page 39 DATE: 2006. 11. 20. DATE: 2006. 11. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R124 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R208 0RH4703D622 MCR10EZHJ474 470KOHM 5% 1/8 R125 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R209 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2...
  • Page 44 Nov, 2006 P/NO : MFL37471801 Printed in Korea...

This manual is also suitable for:

32lx4dcs-ub

Table of Contents