LG 32LX2D-UA Service Manual
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LG 32LX2D-UA Service Manual

LG 32LX2D-UA Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : AL-04DA
MODEL : 32LX2D-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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  • Page 1: Service Manual

    LCD TV SERVICE MANUAL CHASSIS : AL-04DA MODEL : 32LX2D-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 ...............10 SVC REMOCON ..................12 HOTEL MODE..................13 TROUBLE SHOOTING ................16 BLOCK DIAGRAM...................19 WIRING DIAGRAM ..................21 EXPLODED VIEW .................. 22 EXPLODED VIEW PARTS LIST ..............23 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 X-RADIATION, 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

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test and Inspection Method This specification is applied to AL-04DA chassis. 3.1 Performance : LGE TV test method followed. 2. Requirement for Test 3.2 Demanded other specification.
  • Page 7 5. External Input Format Component Video Input (Y, C Resolution H-freq(kHz) V-freq.(kHz) Pixel clock Proposed 640 x 480 15.73 SDTV ,DVD 480I 704 x 480 31.47 59.94 SDTV 480P 1280 x 720 45.00 60.00 HDTV 720P 1280 x 720 44.96 59.94 HDTV 720P 1920 x 1080...
  • Page 8 HDMI Input (PC/DTV) Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 640*480 31.469 59.94 25.17 VESA(VGA) 640*480 37.861 72.80 31.50 VESA(VGA) 640*480 37.500 75.00 31.50 VESA(VGA) 800*600 35.156 56.25 36.00 VESA(SVGA) 800*600 37.879 60.31 40.00 VESA(SVGA) 800*600 48.077 72.18 50.00 VESA(SVGA) 800*600 46.875 75.00 49.50...
  • Page 9 6. General spec(Module) Item Unit Remark Active Screen Size 800.4(diagonal) 31.51 inches Outline Dimension 760(H) x 450(V) x 48(D) Typ. Pixel Pitch 170.25 x 510.75 x RGB Pixel Format 1366(H)x768(V) RGB stripe arrangement Color Depth 8bit 16.7 Mbit Luminance ,White cd/m2 Center 1 point Viewing Angle (CR>10)

  • Page 10: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Applicability 3. Full assembly process adjustment These specifications are applicable for all LCD TV models with an AL-04DA chassis that are manufactured by the <Precaution> Manufacturing Group of the Display Business Division, or Each PCB assembly must be checked using the check jig set any of its related manufacturers.
  • Page 11 3.2.4. Adjustment method 3.3.3. Manual White Balance Adjustment A) When entering the component, input 100% When adjusting after carrying out zero calibration for Horizontal Color Bar Pattern (HozTV30Bar) of the CA-100, the sensor should be tightly fixed on the supportable 720P mode, and select Component 1 LCD module surface.

  • Page 12: 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 13: Hotel Mode

    1.1. Stationl Menu Display - Decide to enter 'Station Menu' or not in the 'Main Menu' by setting 'Station Menu Display' as Yes(Enter Possible) orNo(Enter Impossible) on the "LG Hotel Mode" OSD. 1.2. Programl Change - Decide to change channel or not by setting 'Program Change' as Yes(Change Possible) or No(Change Impossible) when present source is TV.
  • Page 14 1.3. Input Source Change - Decide to change input source or not by setting 'Input Source Change' as Yes(Change possible) or No(Change impossible). - When 'Input Source Change' is set to No(Change impossible), TV/AV key and Multimedia key doesn't work, and entering 'Input' item in the 'Main Menu OSD' is impossible.
  • Page 15 1.10. Program - Decide to turn on TV as set channel or last memorized channel or not by setting 'Channel' as On(Work) or Off(Do Not Work). - When 'Power On Operation' is set to Yes(Work), then user can enter 'Channel' and set the value. - When 'Power On Operation' is set to On(Work), setting 'Channel' value of ''Power On Operation' is possible and TV always turns on as set 'Channel' value.

  • Page 16: Troubleshooting

    TROUBLESHOOTING No power Check the condition of power Connect the connectors Related connectors. FAIL PASS Check the Measure the power board stand_by voltage : Digital ref. voltage : D_board P1401 5 th pin FAIL Power board CN804 ST_ 6V 1th pin 24V FAIL PASS Replace Power_board...
  • Page 17 No raster Standby Check No power voltage check : Replace D_board (Go to No power) D_board P1401 FAIL PASS 5th 6V PASS Measure Check No power Standby voltage : Replace A_board (Go to No power) A_board P804 7th 6V PASS FAIL PASS Measure...
  • Page 18 No sound Measure Check Sound supply : A_power board trans output: Replace power board A_board P804 #1 18V 18V at power_board FAIL FAIL CN803 #1 PASS Check If A_board 18V is short-circuited. Replace A_board Resistance btween A_board PASS P821 Pin No.2 and 3 infnity? Check output to the Speaker :...

  • Page 19: Block Diagram

    BLOCK DIAGRAM - 19 -...
  • Page 20 BLOCK DIAGRAM DESCRIPTION In this system there are 2 tuners - ATSC/NTSC tuner(TDVS-H701P) and NTSC-only tuner.(TAFM-H103P) So it is impossible to have a digital (main)/digital (sub) PIP. CXA2181Q is the AV switch for the component signals and CXA2069Q is the AV switch for the composite signals. The audio signals which separated by CXA2069 are sent to MSP4440.

  • Page 21: Wiring Diagram

    - 21 -...

  • Page 22: Exploded View

    - 22 -...

  • Page 23: Exploded View Parts List

    LCD,Module-TFT, LC320W01-A6K6 DRIVER 32.0INCH 1366X768 500CD COLOR 72% - - - or 6304FLP181A LCD,Module-TFT, LC320W01-A6K3 DRIVER 31.5INCH 1366X768 500CD COLOR - - 600VS1 - 6304FLP288C LCD Panel, LC320W01-SL01 LG PHILPS TFT COLOR WXGA AIODC 4 MASK (LC320W01-SL01-F1C) 3809TKE030L Cover Assembly, 32LX1D-UA DTV 3808TKE025 SET 3809TKE030M...

  • 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: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C712 0CH3104K566 0805B104K500CT 100nF 10% 50 C636 0CF4741L438 PCMT 365 76474 470nF 5% 63V C713 0CH3103K516 C2012Y5P1H103KT 10nF 10% 50 C715...
  • Page 26 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION RESISTORs 6210TCE001G HH-1M3216-501JT 500OHM 3.2X 6210TCE001G HH-1M3216-501JT 500OHM 3.2X R101 0RH3300D622 MCR10EZHJ331 330OHM 5% 1/8W 6210TCE001G HH-1M3216-501JT 500OHM 3.2X R102 0RH1000D622 MCR10EZHJ101 100OHM 5% 1/8W...
  • Page 27 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R233 0RH1000D622 MCR10EZHJ101 100OHM 5% 1/8W R103 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R234 0RH0222D622 MCR10EZHJ220 22OHM 5% 1/8W R108 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1...
  • Page 28 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R650 0RJ3301D677 MCR03EZPJ332 3.3KOHM 5% 1/1 C1190 0CE476SF6DC VMV476M016S0ANC010 47uF 20% R651 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 C1194 0CE476SF6DC VMV476M016S0ANC010 47uF 20% R653...
  • Page 29 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C719 0CH8226F691 MVK5.0TP16VC22M 22uF 20% 16 C1042 0CH3222K516 C2012Y5P1H222KT 2.2nF 10% 5 C771 0CE106WFKDC MVK4.0TP16VC10M 10uF 20% 16 C1043 0CH3474H946 C2012Y5V1E474ZT 470nF -20TO C775...
  • Page 30 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1168 0CH3104K566 0805B104K500CT 100nF 10% 50 C1319 0CH3104K566 0805B104K500CT 100nF 10% 50 C1169 0CH3104K566 0805B104K500CT 100nF 10% 50 C132 0CH3104K566 0805B104K500CT 100nF 10% 50 C117...
  • Page 31 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1640 0CH3104K566 0805B104K500CT 100nF 10% 50 C238 0CH3104K566 0805B104K500CT 100nF 10% 50 C1643 0CH3104K566 0805B104K500CT 100nF 10% 50 C240 0CH3104K566 0805B104K500CT 100nF 10% 50 C1645...
  • Page 32 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C421 0CH3104K566 0805B104K500CT 100nF 10% 50 C501 0CH3104K566 0805B104K500CT 100nF 10% 50 C422 0CH3104K566 0805B104K500CT 100nF 10% 50 C502 0CH3104K566 0805B104K500CT 100nF 10% 50 C423...
  • Page 33 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C641 0CH3104K566 0805B104K500CT 100nF 10% 50 C773 0CH3104K566 0805B104K500CT 100nF 10% 50 C642 0CH3104K566 0805B104K500CT 100nF 10% 50 C776 0CH3104K566 0805B104K500CT 100nF 10% 50 C643...
  • Page 34 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C932 0CH3104K566 0805B104K500CT 100nF 10% 50 C1229 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C934 0CH3104K566 0805B104K500CT 100nF 10% 50 C1316 0CK104CK56A 0603B104K500CT 100nF 10% 50 C935...
  • Page 35 IC202 0IZZ9H0130A IC202 FUJITSU TSOP 48PIN FL-Pb Free IC1406 0DRSE00048A RLCAMP0504M 1.2V 6V 25V 12A IC202 0IZZTSZ771A 32LX2D-UA FLASH 48P 1 IC606 0DRSE00048A RLCAMP0504M 1.2V 6V 25V 12A IC203 0IZZ9H0131A IC203 FUJITSU TSOP 48PIN FL-Pb Free IC607 0DRSE00048A RLCAMP0504M 1.2V 6V 25V 12A...
  • Page 36 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IC305 0IPRP00032A "SIL3512ECTU128,LF SILICON I" L709 6210TCE001G HH-1M3216-501JT 500OHM 3.2X IC705 0IPRPNE008A UPD64011BGM-8ED-A 3.0VTO3.6 L710 6210TCE001G HH-1M3216-501JT 500OHM 3.2X IC706...
  • Page 37 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION Q708 0TR150400BA 2SA1504S(ASY) PNP -5V -50V AR402 0RJ0222C687 RCA86TRJ22R0 22OHM 5% 1/16W Q709 0TR150400BA 2SA1504S(ASY) PNP -5V -50V AR403 0RJ0222C687 RCA86TRJ22R0 22OHM 5% 1/16W...
  • Page 38 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1041 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W R1214 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R1042 0RH1001D622 MCR10EZHJ102 1KOHM 5% 1/8W R1215 0RH4702D622 MCR10EZHJ473 47KOHM 5% 1/8W...
  • Page 39 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1601 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R408 0RH0222D622 MCR10EZHJ220 22OHM 5% 1/8W R1706 0RH2402D622 MCR10EZHJ243 24KOHM 5% 1/8W R409 0RH0222D622 MCR10EZHJ220 22OHM 5% 1/8W...
  • Page 40 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R667 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 R837 0RH3300D622 MCR10EZHJ331 330OHM 5% 1/8W R683 0RH4701D622 MCR10EZHJ472 4.7KOHM 5% 1/8 R838 0RH0752D622 MCR10EZHJ750 75OHM 5% 1/8W...
  • Page 41 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1036 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R117 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R1037 0RJ2200D677 MCR03EZPJ221 220OHM 5% 1/10 R1175 0RJ0000D677...
  • Page 42 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1402 0RJ2201D677 MCR03EZPJ222 2.2KOHM 5% 1/1 R256 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W R1403 0RJ2201D677 MCR03EZPJ222 2.2KOHM 5% 1/1 R257 0RJ0222D677...
  • Page 43 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R356 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10 R707 0RJ2202D677 MCR03EZPJ223 22KOHM 5% 1/10 R413 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R708 0RJ2200D677...
  • Page 44 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R865 0RJ4700D677 MCR03EZPJ471 470OHM 5% 1/10 SW1105 140-313B KPT-1115AM 1C1P 12VDC 0.05A R866 0RJ4700D677 MCR03EZPJ471 470OHM 5% 1/10 SW1106 140-313B KPT-1115AM 1C1P 12VDC 0.05A...
  • Page 45 DATE: 2006. 03. 20. DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C2032 0CK104CK56A 0603B104K500CT 100nF 10% 50 R3114 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2 C2033 0CK102CK56A 0603B102K500CT 1nF 10% 50V R3115 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2...
  • Page 46 DATE: 2006. 03. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R2117 0RH0752D622 MCR10EZHJ750 75OHM 5% 1/8W R2118 0RH0752D622 MCR10EZHJ750 75OHM 5% 1/8W R2123 0RH0222D622 MCR10EZHJ220 22OHM 5% 1/8W R2124 0RH0222D622 MCR10EZHJ220 22OHM 5% 1/8W R2125 0RH2200D622 MCR10EZHJ221 220OHM 5% 1/8W R2126 0RH2200D622 MCR10EZHJ221 220OHM 5% 1/8W R2127...
  • Page 51 Mar, 2006 P/NO : 38289S Printed in Korea...

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