LG 32LX3DC-UA Service Manual
LG 32LX3DC-UA Service Manual

LG 32LX3DC-UA Service Manual

Lcd tv lg 32lx3dc-ua/32lx3dcs-ua

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LCD TV

SERVICE MANUAL

CHASSIS : AL-04CA
MODEL : 32LX3DC-UA/32LX3DCS-UA
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 32LX3DC-UA

  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : AL-04CA MODEL : 32LX3DC-UA/32LX3DCS-UA 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 ...............12 TROUBLE SHOOTING ................15 BLOCK DIAGRAM...................18 WIRING DIAGRAM ..................21 EXPLODED VIEW .................. 22 EXPLODED VIEW PARTS LIST ..............23 REPLACEMENT PARTS LIST ............... 24 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 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-A6K3 (1366x768) LG Philips LCD Operating Environment Temp. : 0 ~ 40 deg Humidity : 10 ~ 90 % Storage Environment Temp. : -20 ~ 50 deg Humidity : 10 ~ 90 % 4.
  • Page 7 Set Password New/Confirm Block Ch. Movie Rating G/PG/PG-13/R/NC-17/X TV Rating-Children Age/Fantasy Violence TV Rating-General Age/Dialogue/Language/Sex/Violence Aux.Block Video1/Video2/Component1/Component2/RGB1/RGB2/DVI Etc. Comb Filter 3D Comb(main), 4H Comb(sub) 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. External Interface - AV Input Item Unit Remark AV Video Out Level 0.85 1.15 AV Video Sync Out Level 0.24 0.29 0.32 AV Burst Out Level 0.14 0.28 0.35 AV Video Out Frequency Charactristic AV Video Out S/N 40.0 AV Audio In S/N, L/R 43.0 AV Audio In Frequency Response, Low...
  • Page 11 9. Electro Optical Characteristic Specifications Item Unit Remark Contrast Ratio It measured at center point Surface Luminance, White Cd/m Full white Luminance Variation Response Time Tr (Rising time) msec Color coordinate 0.640 Full Pattern 0.343 GREEN 0.275 -0.03 0.605 +0.03 BLUE 0.145 0.065...
  • Page 12 11. Factory default condition Item Condition Remark Input Mode N.A.(Specified by D-Box) Volume Level N.A.(Specified by D-Box) Mute Aspect Ratio 16:9(Specified by D-Box) Picture Ez Picture Normal User Control Contrast Brightness Colour Sharpness Tint Color Temperature Medium Sound EZ Sound Normal Audio Language Empty Ch map...
  • Page 13: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object 3. Total Adjustment This instruction is for the application to the LCD TV. 3.1 EDID (Extended Display Identification Data ) / DDC (Display Data Channel) download 2. Designation. 3.1.1 Summary 2.1 As this chassis is a non-charging type of chassis for : This function was created by VESA and is intended to insulation of the power supply part, it may not use an realize "Plug and Play"...
  • Page 14 3.2.2 Adjustment Method 3.3 Color adjustment of main/subsidiary part Color adjustment of main/subsidiary part is intended to A) Enter the 100% Vertical Color Bar Pattern reduce color difference of the main/subsidiary part in the (TVBAR_100) of the 720P Mode supported for entry PIP/POP/SPLIT Screen.
  • Page 15: 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 16: Troubleshooting

    TROUBLESHOOTING No power Power supply Check Connector connection connector connection status. Fail Pass Connection Stand voltage check: of power supply part : D-board P810 '+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 P818 #5Pin 5V Check wiring status of the 15-pin...
  • Page 17 No Raster Stand by voltage : Check No Power Replace Power board D_board P810 +12V-P (Go to Power) Pass Fail Pass Stand by voltage : Check No Power D_board IC480 Replace IC480/Q411 (Go to Power) Pass Fail #5, #6, #7, #8 12V Pass Replace D_board Fail...
  • Page 18 No Sound Power board 15Pin Check Sound supply: Connector Replace Connector A_board P817 #1, #2 18V Fail Fail check Pass Pass Replace Power Board Speaker output check : Replace A_Board Is there waveform of P601 #1? Fail Pass Replace Speaker - 18 -...
  • Page 19 BLOCK DIAGRAM(LCD Built-In) - 19 -...
  • Page 20: Block Diagram

    BLOCK DIAGRAM DESCRIPTION(MAIN) ATSC/NTSC tuner (TDVB-001P) can receive both terrestrial analog and terrestrial digital signals. But a NTSC tuner (6700NFNS06C) can receive terrestrial analog only. Therefore if you run two displays at thesame time, it is not possible to see two digital channels. A/V SW (CXA2069) is the IC that takes external input terminal signals and broadcast signals from the tuners and handles them selectively.
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  • Page 23: Exploded View Parts List

    CABINET ASSEMBLY, 32LX3DCS BRAND 3090TKE026 SET 3091TKE034F CABINET ASSEMBLY, 32LX3DCS BRAND 3090TKE026 CSKD 6304FLP290A LCD(LIQUID CRYSTAL DISPLAY), LC320W01-A6K6 LG PHILPS TFT COLOR WXGA AIODC or 6304FLP181A LCD(LIQUID CRYSTAL DISPLAY), LC320W01-A6K3 LG PHILPS TFT COLOR AI ODC 3809TKE030E BACK COVER ASSEMBLY, 32LX3DC 3808TKE025 SET...
  • 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. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C310 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C657 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C316 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C658...
  • Page 26 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CD11 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C238 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP CD13 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C241...
  • Page 27 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C851 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C850 0CH2334F566 0.33UF 16V 10% X7R 2012 R/T C883 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C825...
  • Page 28 IC200 0ICTMLG009A LGDT1102 HD2 LG IC SBGA-43 C813 0CE476VF6DC 47UF MV 16V 20% R/TP(SMD) S IC200 0ICTMLG009D LGDT1102 HD2 LEED FREE LG I-Non Pb-free C814 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) S IC315 0ICTMLG013A LGDT1901A LG IC 24P SSOP TR...
  • Page 29 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION F801 6200VJT001A BMK400 TA NIIGATA 50VOLT 1A COIL & CORE & FILTER & INDUCTOR F810 6200VJT006A STC222D NIIGATA 50VOLT 4A 2...
  • Page 30 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION AR407 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% R/T R258 0RH2200D622 220 OHM 1 / 10 W 2012 5.00% AR408 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% R/T R259...
  • Page 31 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R811 0RH2202D622 22K OHM 1 / 10 W 2012 5.00% R119 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R813 0RH6201D622 6.2K OHM 1 / 10 W 2012 5.00 R120...
  • Page 32 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1391 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R254 0RH2200D622 220 OHM 1 / 10 W 2012 5.00% R1397 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R255...
  • Page 33 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R379 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R635 0RH3000D622 300 OHM 1 / 10 W 2012 5.00% R380 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R637...
  • Page 34 6204B60001B VCXO BUBANG 27MHZ +/- 100 P R906 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% TU101 6700NFNS04F TDVL-H751P LG INOTEK MULTI R907 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% CONTROL BOARD R908 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% R910 0RH0222D622 22 OHM 1 / 10 W 2012 5.00%...
  • Page 35 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1863 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C838 0CH3103K516 10000PF 50V 10% B(Y5P) 2012 C1864 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C839...
  • Page 36 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L719 6210TCE001G HH-1M3216-501 CERATEC 3216M R107 0RH0222D622 22 OHM 1 / 10 W 2012 5.00% L802 6210TCE001G HH-1M3216-501 CERATEC 3216M R108...
  • Page 37 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1841 0RH4702D622 47K OHM 1 / 10 W 2012 5.00% R804 0RH2200D622 220 OHM 1 / 10 W 2012 5.00% R1843 0RH4701D622 4.7K OHM 1 / 10 W 2012 5.00 R805...
  • Page 38 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R997 0RH1000D622 100 OHM 1 / 10 W 2012 5.00% C602 0CE476VF6DC 47UF MV 16V 20% R/TP(SMD) S R998 0RH1000D622 100 OHM 1 / 10 W 2012 5.00% C604...
  • Page 39 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C813 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) S C944 0CH6101K416 100PF 50V 5% NP0 2012 R/TP C814 0CE106VF6DC 10UF MV 16V 20% R/TP(SMD) S C946...
  • Page 40 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L724 6210TCE001G HH-1M3216-501 CERATEC 3216M R124 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D L725 6210TCE001G HH-1M3216-501 CERATEC 3216M R130...
  • Page 41 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R189 0RH1502D622 15K OHM 1 / 10 W 2012 5.00% R835 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R190 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% R845...
  • Page 42 DATE: 2005. 07. 10. DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION RP103 0RH1001D622 1K OHM 1 / 10 W 2012 5.00% L3102 0RH1000D622 100 OHM 1 / 10 W 2012 5.00% T801 6200J00011B H354LAI-K5225 TOKO R/TP BAN...
  • Page 43 DATE: 2005. 07. 10. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L3101 6210TCE001G HH-1M3216-501 CERATEC 3216M LED801 0DLBE0158AA BRIGHT LED ELECTRONICS BL-H LED802 0DLBE0158AA BRIGHT LED ELECTRONICS BL-H LED803 0DLBE0158AA BRIGHT LED ELECTRONICS BL-H LED804 0DLBE0158AA BRIGHT LED ELECTRONICS BL-H LED805 0DLBE0158AA BRIGHT LED ELECTRONICS BL-H LED806 0DLBE0158AA BRIGHT LED ELECTRONICS BL-H LED807 0DLBE0158AA BRIGHT LED ELECTRONICS BL-H...
  • Page 47 Jul, 2005 P/NO : 38289S0004N Printed in Korea...

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