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LG 32LC2D(B) Service Manual
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LG 32LC2D(B) Service Manual

32", 37", 42" tft wxga lcd
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LCD TV

SERVICE MANUAL

CHASSIS : LD61A
FACTORY NAME : 32LC2D(B)-EC/37LC2D(B)-EC/42LC2D(B)-EC
MODEL : 32LC2D(B)/37LC2D(B)/42LC2D(B)
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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  • Page 1: Service Manual

    website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html LCD TV SERVICE MANUAL CHASSIS : LD61A FACTORY NAME : 32LC2D(B)-EC/37LC2D(B)-EC/42LC2D(B)-EC MODEL : 32LC2D(B)/37LC2D(B)/42LC2D(B) 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 ...............13 TROUBLE SHOOTING ................17 BLOCK DIAGRAM...................30 EXPLODED VIEW .................. 32 REPLACEMENT PARTS LIST ............... 38 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

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1.General Specification(TV) Item Specification Remark Video input applicable system PAL-D/K, B/G, I, NTSC-M, SECAM NTSC 4.43 Receivable Broadcasting System 1) PAL/SECAM BG EU/Non-EU 2) PAL/SECAM DK (PAL Market) 3) PAL I/I 4) SECAM L/L'...
  • Page 7 2. General Specification Item Specification Remark Panel 32", 37", 42" TFT WXGA LCD Frequency range H : 31 ~ 61Khz PC Input V : 56 ~ 75Hz Control Function 1) Contrast/Brightness 2) H-Position / V-Position 3) Tracking : Clock / Phase 4) Auto Configure 5) Reset Component Jack...
  • Page 8 3.Optical Feature(LCD Module) Item Specification Min. Typ. Max. Remark Viewing Angle <CR>10> R/L, U/D 178, 178 Luminance Luminance(cd/m 32/37/42 Variation MAX/MIN Contrast Ratio CR(32", 37") All White/All Black CR(42") All White/All Black (32", 37") 1200 1600 All White/All Black (42") 1100 CIE Color Coordinates White...
  • Page 9 5. RGB PC INPUT Mode Table Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Analog RGB, Digital RGB 720x400 31.468 70.8 28.321 640x480 31.469 59.94 25.17 VESA 37.684 75.00 31.5 VESA 800x600 37.879 60.31 40.00 VESA 46.875 49.5 VESA 832x624 49.725 74.55 57.283 1024x768 48.363...
  • Page 10 7. HDMI INPUT Mode Table Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Analog RGB, Digital RGB 720x400 31.468 70.8 28.321 640x480 31.469 59.94 25.17 VESA 37.684 75.00 31.5 VESA 800x600 37.879 60.31 40.00 VESA 46.875 49.5 VESA 832x624 49.725 74.55 57.283 1024x768 48.363 60.00...
  • Page 11 7. Mechanical specification <32LC2D> Item Content Remark Product Dimenson Width(W)(32"/37"/42") Length(D)(32"/37"/42") Height(H)(32"/37"/42") Before Packing 1054 813.5 With Stand After Packing 1052 1166 Product Weight Only SET 22Kg(32")/31Kg(37")/37.0Kg(42") With Stand With Box 25.5Kg(32")/33.3Kg(37")/42.3Kg(42") 8. Mechanical specification <Table 1> Scart Arrangement 1.(Full Scart) Signal Signal Level Impedance...
  • Page 12 <Table 2> Scart Arrangement 2.(Half Scart) Signal Signal Level Impedance Audio Output B (right) 0.5 Vrms < 1㏀ Audio Input B (right) 0.5 Vrms > 10㏀ Audio Output A (left) 0.5 Vrms < 1㏀ Ground (audio) Ground (blue) Audio input A (left) 0.5 Vrms >...

  • Page 13: Adjustment Instruction

    [Channel Download] => [Write Batch]. This spec. sheet is applied to all of the LD61A chassis Next, select proper binary file(*.bin) including the CH manufactured at LG TV Plant all over the world. information for each model at [Channel Download] => [NVRAM File].
  • Page 14 3) Connect RS232 cable(Use Download Jig and general RS- Before AV ADC Calibration, should be executed the 232C Twisted Serial Cable). "Panel size selection 5. Select method of Panel size 5.1 Press ADJ Key in the Adjust remocon 5.2 Select "Panel Control" by using ▲/▼ (CH+/-) key, and press (ENTER) *Before upgrading "Hudson flash memory", push the switch...

  • Page 15: White Balance

    6.1 Adjustment of RF/AV/S-VIDEO 6.3 Adjustment of RGB * Required Equipments * Required Equipments - Remote controller for adjustment - Remote controller for adjustment - MSPG-925F Pattern Generator (Which has Video Signal: -l MSPG-925F Pattern Generator 100% Color Bar Pattern shown in Fig. 1) (Which has XGA [1024*768] 60Hz 100% Color Bar pattern =>...

  • Page 16: 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 17: Trouble Shooting

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  • Page 30: Block Diagram

    BLOCK DIAGRAM(Main) - 30 -...
  • Page 31 BLOCK DIAGRAM(Jack) 8Pin Rec ord 8Pin Rec ord DTV V_out I2S DTV/HDMI MSP_SPDIF WIRE_IR_in WIRE_IR_out PC_RGB - 31 -...

  • Page 32: Exploded View

    - 32 -...
  • Page 33 PCB Assembly,Sub, SUB T.T LD61A 32LC2D-EC ALUKLFX LED/IR 6709900016C SMPS,AC/DC, LGLP2637HEP 90.0VTO264.0V 215W 47TO63HZ UL/CSA/SEMKO YY / AT / H&E or 6709900016A Power Supply Assembly, FREE H3/E2 LCD MODEL LCD LG ELECTRONICS LB LC 68719ST100A PCB Assembly,Sub, SUB T.T LD61A 32LC2D-EC ALUKLFX JACK BOARD 33139D3075A...
  • Page 34 - 34 -...
  • Page 35 PCB Assembly,Sub, SUB T.T LD61A 37LC2D-FC ALFRLLX IR/LED TOTAL 6709900016D SMPS,AC/DC, LGLP2637HEP 90.0VTO264.0V 215W 47TO63HZ UL/CSA/SEMKO YY / AT / HE or 6709900016B Power Supply Assembly, FREE H3/E2 LCD MODEL LCD LG ELECTRONICS LB LC 37INCH 68719ST100A PCB Assembly,Sub, SUB T.T LD61A 32LC2D-EC ALUKLFX JACK BOARD 33139D3061A...
  • Page 36 - 36 -...
  • Page 37 EXPLODED VIEW PARTS LIST(42LC2D) PART NO. DESCRIPTION 30919E0047G Cover Assembly, 42LC2D BRAND 30909E0028 EC C/SKD 30919E0047L Cover Assembly, 42LC2DB BRAND 30909E0028 EC C/SKD 6304FLP363A LCD,Panel-TFT, LC420W02-SLA1 42INCH 1365X768 500CD COLOR 72% - 3809900165K Cover Assembly, 42LC2D 2PHONE EC C/SKD, SPRAY 3043900034C Base Assembly, 42LC2 42LC2 FOR USA C/SKD 3043900034F...

  • Page 38: 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 39 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C832 0CE226WF6DC MVK5.0TP16VC22M 22uF 20% 16 C1207 0CK102CK56A 0603B102K500CT 1nF 10% 50V C833 0CE226WF6DC MVK5.0TP16VC22M 22uF 20% 16 C1208 0CK102CK56A 0603B102K500CT 1nF 10% 50V...
  • Page 40 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C152 0CK104CF56A 0603B104K160CT 100nF 10% 16 C514 0CK103CK56A 0603B103K500CT 10nF 10% 50V C1523 0CK103CK56A 0603B103K500CT 10nF 10% 50V C515 0CK103CK56A...
  • Page 41 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C885 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1088 0CK104CK56A 0603B104K500CT 100nF 10% 50 C886 0CK104CK56A 0603B104K500CT 100nF 10% 50 C1090 0CK104CK56A...
  • Page 42 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C190 0CK103CK56A 0603B103K500CT 10nF 10% 50V C628 0CK104CK56A 0603B104K500CT 100nF 10% 50 C191 0CK822CK46A 0603B822J500CT 8.2nF 5% 50V C630 0CK104CK56A...
  • Page 43 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D1106 0DS226009AA KDS226 1.2V 85V 300MA 2A 4N L1205 6210VC0006A FBMH3216 HM501NT 500OHM 3.2 D1107 0DS226009AA KDS226 1.2V 85V 300MA 2A 4N...
  • Page 44 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L511 6210TCE001G HH-1M3216-501JT 500OHM 3.2X AR353 0RJ0332C687 RCA86TRJ33R0 33OHM 5% 1/16W L512 6210TCE001G HH-1M3216-501JT 500OHM 3.2X AR354 0RJ0332C687 RCA86TRJ33R0 33OHM 5% 1/16W...
  • Page 45 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1819 0RJ0512D677 MCR03EZPJ510 51OHM 5% 1/10W R312 0RJ0000G676 MCR18EZHJ000_ 0OHM 5% 1/4W R1821 0RJ0512D677 MCR03EZPJ510 51OHM 5% 1/10W R313 0RJ0000G676...
  • Page 46 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R944 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R125 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W R949 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1254 0RJ0000D677...
  • Page 47 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R152 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W R324 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R154 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W R325 0RJ0332D677...
  • Page 48 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R548 0RJ2000D677 MCR03EZPJ201 200OHM 5% 1/10 R732 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R549 0RJ2000D677 MCR03EZPJ201 200OHM 5% 1/10 R733 0RJ0222D677...
  • Page 49 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R900 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10 C302 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% R903 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W C304 0CE226WF6DC MVK5.0TP16VC22M 22uF 20% 16 R904...
  • Page 50 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C145 0CK104CK56A 0603B104K500CT 100nF 10% 50 C482 0CK103CK56A 0603B103K500CT 10nF 10% 50V C154 0CC221CK41A C1608C0G1H221JT 220pF 5% 50 C485 0CK104CK56A...
  • Page 51 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C435 0CK474CH94A 0603F474Z250CT 470nF -20TO+ L101 6210VC0006A FBMH3216 HM501NT 500OHM 3.2 C437 0CC101CK41A C1608C0G1H101JT 100pF 5% 50 L110 6210VC0006A FBMH3216 HM501NT 500OHM 3.2...
  • Page 52 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L408 0LCTO00019A D75C-646CY-220M=P3 22UH 20% R126 0RJ2203D677 MCR03EZPJ224 220KOHM 5% 1/1 L409 0LCTO00019A D75C-646CY-220M=P3 22UH 20% R127 0RJ4703D677 MCR03EZPJ474 470KOHM 5% 1/1...
  • Page 53 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R188 0RJ6801D677 MCR03EZPJ682 6.8KOHM 5% 1/1 R378 0RJ4703D677 MCR03EZPJ474 470KOHM 5% 1/1 R189 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R379 0RJ4701D677...
  • Page 54 DATE: 2006. 05. 18. DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R564 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R401 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R565 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R402 0RJ2702D677...
  • Page 55 DATE: 2006. 05. 18. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION SW104 140-313A THVV501BBC 1C1P 12VDC 0.05A SW105 140-313A THVV501BBC 1C1P 12VDC 0.05A SW106 140-313A THVV501BBC 1C1P 12VDC 0.05A SW107 140-313A THVV501BBC 1C1P 12VDC 0.05A SW108 140-313A THVV501BBC 1C1P 12VDC 0.05A ZD101 0DZ510009AK GDZJ5.1B 5.1V 4.94TO5.2V 80...
  • Page 61 May., 2006 P/NO : 38289S0043 Printed in Korea...

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