LG 42LB1DRA - 42" LCD Integrated HDTV Service Manual

LG 42LB1DRA - 42" LCD Integrated HDTV Service Manual

Service manual
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LCD TV

SERVICE MANUAL

CHASSIS : LA61A
MODEL : 42LB1DR-UA / 42LB1DRA-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 42LB1DRA - 42" LCD Integrated HDTV

  • Page 1: Service Manual

    website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html LCD TV SERVICE MANUAL CHASSIS : LA61A MODEL : 42LB1DR-UA / 42LB1DRA-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..............11 SVC REMOCON ..................17 VIDEO TROUBLE SHOOTING&BLOCK DIAGRAM ......18 AUDIO TROUBLE SHOOTING&BLOCK DIAGRAM......41 EXPLODED VIEW .................. 53 EXPLODED VIEW PARTS LIST ..............54 REPLACEMENT PARTS LIST ............... 55 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 (ZE/TE) 2) PAL/SECAM DK EU/Non-EU 3) PAL I/I (PAL Market)
  • Page 7 2. General Specification Item Specification Remark Panel 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 1 : Y...
  • Page 8 3.Optical Feature(LCD Module) Item Specification Remark R/L, U/D 176, 176 Viewing Angle<CR 10> Luminance(cd/ ) Luminance Variation Typical MAX/MIN Contrast Ratio (With Al) 1000 ALL white/All back WHITE Typ. 0.285 CIE Color Coordinates Typ. 0.293 Typ. 0.640 Typ. Typ. 0.341 Typ.
  • Page 9 6. RGB DTV INPUT Mode Table Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed 720x576 31.25 50.00 SDTV 576p 50Hz 720x480 31.47 59.94 SDTV 480p 60Hz 1280x720 45.00 50.00 HDTV 720p 50Hz HDCP 1280x720 44.96 59.94 HDTV 720p 60Hz HDCP 1920x1080 28.13 50.00 HDTV 1080i 50Hz HDCP...
  • Page 10 10. Mechanical specification <Table 1> Scart Arrangement 1.(Full 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 11: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Object If you turn on a still screen more than 20 minutes (Especially These instructions are applied to all of the PDP TV, PA61A. Digital pattern(13 CH), Cross Hatch Pattern), an afterimage may occur in the black level part of the screen. 2.
  • Page 12 (2) Select "Configure -> Select Device". (7) Download is executed and about 5 seconds later, the "Programming succeeded" message is displayed on the Output window and the Download process is ended. (8) The execution of process (6) is convenient when using the (3) When the "Select Device"...
  • Page 13 (4) Click the "OpenFile - Download" button from CP Data 6. Gemstar Operation Confirmation Download, ‘select the Private Key’ appears and click ENTER. 6-1. Required Test Equipment (1) PC with Factory Test Program (2) VBI Inserter (Norpak TES3) - Guide Data Discharge Equipment [ In case of without the VBI Inserter(TES3), a VCR may be used.
  • Page 14 7. Cable Operation Confirmation (1) Confirm that the Cable Card is inserted in the slot. (2) Enter the EZ adjust menu by pressing the Adjust key on the Service Remote Control (S R/C). (3) Go to number 2 Cable Check and press the Right key ( (4) Confirm items below.
  • Page 15 When the adjustment is over, 'ADC RGB_DTV Success’ 10. ADC-Set Adjustment is displayed. (5) Readjust after confirming the case Pattern or 10-1. Synopsis adjustment condition where the adjustment errors. ADC-Set adjustment to set the black level and the Gain to Error massage is ‘Component Not Connection’...
  • Page 16 11-2. Adjustment of White Balance Operate the Zero-calibration of the CA-210, then attach sensor to PDP module surface when you adjust. Manual adjustment is also possible by the following sequence. (1) HEAT RUN at least 30 minutes by pressing the Power only Key on the Service Remote Control and adjust.
  • Page 17: Svc Remocon

    SVC REMOCON 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. MUTE To check TV screen image easily.
  • Page 18: Video Trouble Shooting&Block Diagram

    32Mb PC_TPOUT2 PC_TPOU HD2_TP[0:7] - 18 -...
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  • Page 23 1394 TP_In TP In1 TP In2 TP Out12 TP Out11 TP In1 TP In2 DDR-32MB DDR-32MB OOB Data - 23 -...
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  • Page 35 1394 TP_In TP Out12 TP Out11 TP In1 TP In2 TP In1 TP In2 DDR-32MB DDR-32MB OOB Data - 35 -...
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  • Page 41: Audio Trouble Shooting&Block Diagram

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  • Page 53: Exploded View

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  • Page 54: Exploded View Parts List

    EXPLODED VIEW PARTS LIST DESCRIPTION PART NO. 30919E0034E Cover Assembly, 42LB1 BRAND . 42LB1DR-UA 30919E0034H Cover Assembly, 42LB1 BRAND . 42LB1DR-UA(C/SKD) 30919E0034B Cover Assembly, 42LB1 BRAND . 42LB1DRA 30919E0034G Cover Assembly, 42LB1 BRAND . 42LB1DRA-UA(C/SKD) 6304FLP295A LCD,Module-TFT, LC420W02-B6K1 DRIVER 42.0INCH 1366X768 500CD COLOR 6304FLP363A LCD,Panel-TFT, LC420W02-SLA1 42INCH 1365X768 500CD COLOR 72% - 3809900149B...
  • Page 55: 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 56 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C1017 0CK103CK56A 0603B103K500CT 10n 10% 50V C1305 0CK104CK56A 0603B104K500CT 100n 10% 50V C1018 0CK104CK56A 0603B104K500CT 100n 10% 50V C1306 0CK103CK56A...
  • Page 57 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C221 0CK104CK56A 0603B104K500CT 100n 10% 50V C337 0CK104CK56A 0603B104K500CT 100n 10% 50V C222 0CK104CK56A 0603B104K500CT 100n 10% 50V C338 0CK104CK56A...
  • Page 58 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C466 0CK103CK56A 0603B103K500CT 10n 10% 50V C661 0CK104CK56A 0603B104K500CT 100n 10% 50V C467 0CK103CK56A 0603B103K500CT 10n 10% 50V C662 0CK104CK56A...
  • Page 59 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C749 0CK104CK56A 0603B104K500CT 100n 10% 50V C860 0CK104CK56A 0603B104K500CT 100n 10% 50V C750 0CK104CK56A 0603B104K500CT 100n 10% 50V C861 0CK104CK56A...
  • Page 60 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C965 0CK104CK56A 0603B104K500CT 100n 10% 50V C1396 0CK104CK56A 0603B104K500CT 100n 10% 50V C966 0CK104CK56A 0603B104K500CT 100n 10% 50V C1618 0CK102CK56A...
  • Page 61 KDS184 1200MV 85V 300MA 2A IC402 0ICTMLG009E LGDT1102F HD2.4 LG IC 432P D602 0DD184009AA KDS184 1200MV 85V 300MA 2A IC505 0ICTMLG013B LGDT1901B LG IC SSOP 24P TR D302 0DRSE00038A SDC15 1300MV 14.3VTO16.4V 2 IC804 0ICTMLG018C "LGDP4412, IEP3 LG IC 452P,T" D303 0DRSE00038A SDC15 1300MV 14.3VTO16.4V 2...
  • Page 62 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IC207 0IMMRMR027E MX29LV320CTTC-70G 32MBIT 4M R244 6210TCE0013 HB-1M1608-121JT 120OHM 1.6X IC208 0IMMRMR027E MX29LV320CTTC-70G 32MBIT 4M L1000 0LCML00020B MLI-201209-6R8K 6.8UH 10% -...
  • Page 63 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION AR500 0RJ0332C687 RCA86TRJ33R0 33OHM 5% 1/16W R1009 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 AR501 0RJ0332C687 RCA86TRJ33R0 33OHM 5% 1/16W R1010 0RJ4701D677...
  • Page 64 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1308 0RJ1201D677 MCR03EZPJ122 1.2KOHM 5% 1/1 R3075 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W R1309 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R3079 0RJ4701D677...
  • Page 65 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R703 0RJ4702D677 MCR03EZPJ473 47KOHM 5% 1/10 R925 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R714 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W R926 0RJ1001D677...
  • Page 66 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R1117 0RJ8200D677 MCR03EZPJ821 820OHM 5% 1/10 R1384 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R1118 0RJ0562D677 MCR03EZPJ560 56OHM 5% 1/10W R1385 0RJ0222D677...
  • Page 67 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R221 0RJ3301D677 MCR03EZPJ332 3.3KOHM 5% 1/1 R376 0RJ0222D677 MCR03EZPJ220 22OHM 5% 1/10W R222 0RJ3301D677 MCR03EZPJ332 3.3KOHM 5% 1/1 R377 0RJ0222D677...
  • Page 68 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R628 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R777 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 R630 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W R778 0RJ1000D677...
  • Page 69 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R936 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 C110 0CE105WK6DC MVK4.0TP50VC1M 1u 20% 50V 5 R937 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 C112...
  • Page 70 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C634 0CE106WFKDC MVK4.0TP16VC10M 10u 20% 16V C317 0CK104CK56A 0603B104K500CT 100n 10% 50V C635 0CE106WFKDC MVK4.0TP16VC10M 10u 20% 16V C322 0CK104CK56A 0603B104K500CT 100n 10% 50V...
  • Page 71 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C538 0CK104CK56A 0603B104K500CT 100n 10% 50V ZD201 0DZRM00248A RLZ8.2B 8200MV 7.78TO8.19V C539 0CK104CF56A 0603B104K160CT 100n 10% 16V ZD202 0DZRM00248A RLZ8.2B 8200MV 7.78TO8.19V...
  • Page 72 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION L310 6210TCE001G HH-1M3216-501JT 500OHM 3.2X R150 0RJ0752D677 MCR03EZPJ750 75OHM 5% 1/10W L315 6210TCE001G HH-1M3216-501JT 500OHM 3.2X R155 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W...
  • Page 73 DATE: 2006. 02. 20. DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R512 0RJ4700D677 MCR03EZPJ471 470OHM 5% 1/10 R102 0RJ5100D677 MCR03EZPJ511 510OHM 5% 1/10 R5120 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/1 R104 0RJ5100D677...
  • Page 74 R5158 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 X501 6212AB3004D CSALF2M69G4ZF01-A3 2.696MHZ R5159 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10 6634D00016A TASA-H401F LG INNOTEK 75 OH R516 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W X201 6202VDT002H SX-1 18.432MHZ 30PPM 18.432 R5160 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10...
  • Page 75 DATE: 2006. 02. 20. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IC101 6712000011B KSM-2013TE2A 4.5TO5.5V 1.3M C102 0CE107SF6DC VMV107M016S0ANE010 100u 20% C103 0CH6330K416 C2012C0G1H330JT 33p 5% 50V C104 0CH3103K516 C2012Y5P1H103KT 10n 10% 50V C105 0CH3104K566 0805B104K500CT 100n 10% 50V C106 0CE106SH6DC VMV106M025S0ANB010 10u 20% C108...
  • Page 81 Feb, 2006 P/NO : 38289S0043Y Printed in Korea...

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