LG 42LB9RT Service Manual
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LG 42LB9RT Service Manual

LG 42LB9RT Service Manual

Chassis : lp7bb
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LCD TV
SERVICE MANUAL
CHASSIS : LP7BB
MODEL : 42LB9RT
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Internal Use Only
website:http://biz.LGservice.com
42LB9RT-MD

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Summary of Contents for LG 42LB9RT

  • Page 1 Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LP7BB MODEL : 42LB9RT 42LB9RT-MD CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    BLOCK DIAGRAM...................25 EXPLODED VIEW .................. 26 EXPLODED VIEW PARTS LIST ..............27 REPLACEMENT PARTS LIST ............... 28 SVC. SHEET ....................Copyright © 2007 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    Udskiftning má kun ske med batteri at samme fabrikat og type. Levér det brugte batteri tilbage til leverandoren Copyright © 2007 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4 Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright © 2007 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright © 2007 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    PC Audio, Component (2EA), AV(2EA) L/R Input Audio variable out (1EA) USB Input (1EA) DivX, MP3, JPEG AV out (1EA) Copyright © 2007 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 0.292/0.292/0.292 0.635/0.636/0.635 0.339/0.343/0.344 Green 0.282/0.284/0.286 0.606/0.615/0.614 Blue 0.145/0.144/0.146 0.064/0.063/0.061 Contrast ratio 32" LPL(0-RT) 1000 42" LPL(0-RT) Luminance Variation Copyright © 2007 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 75.02 78.75 VESA(XGA) 1280*768 47.776 59.87 79.50 WXGA(42XGA,50",60") 1360*768 47.712 60.01 85.50 WXGA(42XGA,50",60") 1366*768 47.700 60.00 84.62 WXGA(42XGA,50",60") Copyright © 2007 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 28.125 50.00 74.250 HDTV 1080I 50Hz 1920*1080 67.5 60.00 148.5 HDTV 1080P 1920*1080 56.25 148.5 HDTV 1080P 50Hz Copyright © 2007 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Adjustment Instruction

    1. Application Range 5. HDD Assembly Adjustment method This spec. sheet is applied to all of the LP7BB chassis (Saturn Analog DVR) manufactured at LG TV Plant all over 5.1. HDD FORMAT the world. 1) Assemble MAIN , DVR Board.
  • Page 11 White Balance Adjustment. - After AV color balance adjustment, Change the mode from AV to RF. (Cancel Heat-run mode.) Copyright © 2007 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 5) Auto-RGB OK means adjustment is completed 5) Auto-RGB OK means the adjustment is completed Copyright © 2007 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 Module and Filter. Therefore Refer to the below Color Coordinates Target. But, in case of WCG module, use the CH12 of CA-210. Copyright © 2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only...

  • Page 14: Trouble Shooting

    Copyright © 2007 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 Copyright © 2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 Copyright © 2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 Copyright © 2007 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 Copyright © 2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Copyright © 2007 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 Copyright © 2007 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 Copyright © 2007 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 Copyright © 2007 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 Copyright © 2007 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 Copyright © 2007 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...

  • Page 25: Block Diagram

    Copyright © 2007 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...

  • Page 26: Exploded View

    EXPLODED VIEW Copyright © 2007 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...

  • Page 27: Exploded View Parts List

    Speaker,Full Range, C103A02K1400 ND 7W 8OHM 81DB 160HZ 122 EAB39506401 Speaker Assembly, 42LB9RT-MD.KWZZLJZ LGEAZ ASSEMBLE PHANTOM TWEETER EAJ38817501 LCD,Module-TFT, LC420WX8-SLA1 WXGA 42INCH 1366X768 500CD COLOR 72% 16/9 1000:1(basic) 5ms(GTG) Zero RT Pol. 10000K Vitiaz 2 LG PHILIPS LCD ABJ32993205 Cabinet Assembly, 42LB9RT-MD LP7BA 42" H4_ANALOG_DVR CABINET ASSEMBLY_FULL_CKD ACQ33924404 Cover Assembly,Rear, 42LB9RT-MD lP7BA 42"...

  • Page 28: Replacement Parts List

    "Capacitor,AL,Chip" VMV106M025S0ANB010 10u C513 0CE476SF6DC "Capacitor,AL,Chip" VMV476M016S0ANC010 47u C1222 0CE106SH6DC "Capacitor,AL,Chip" VMV106M025S0ANB010 10u C515 0CE107SF6DC "Capacitor,AL,Chip" VMV107M016S0ANE010 100 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 28 - Only for training and service purposes...
  • Page 29 C118 0CK105DH56A "Capacitor,Ceramic,Chip" C2012X7R105KFT 1uF 10% C101 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C1180 0CK104DK56A "Capacitor,Ceramic,Chip" 0805B104K500CT 100nF 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...
  • Page 30 C1369 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C1318 0CC100BKF1A "Capacitor,Ceramic,Chip" 0402N100J500LT 10pF 5% C137 EAE32755801 "Capacitor,Ceramic,Chip" CL31A106K5HNNNE 10uF 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 30 - Only for training and service purposes...
  • Page 31 C216 0CK104DK56A "Capacitor,Ceramic,Chip" 0805B104K500CT 100nF 1 C1420 0CK474CH94A "Capacitor,Ceramic,Chip" 0603F474Z250CT 470nF - C216 0CK273CK56A "Capacitor,Ceramic,Chip" 0603B273K500CT 27nF 10 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...
  • Page 32 C449 0CH6010K116 "Capacitor,Ceramic,Chip" C2012C0G1H010DT 1pF 0. C320 0CK474CH94A "Capacitor,Ceramic,Chip" 0603F474Z250CT 470nF - C450 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 32 - Only for training and service purposes...
  • Page 33 C743 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C535 0CC150BK4AA "Capacitor,Ceramic,Chip" C1005C0G1H150JT 15pF 5 C744 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
  • Page 34 C949 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 1 C803 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C950 0CK104BF56A "Capacitor,Ceramic,Chip" C1005X7R104KET 100nF 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 34 - Only for training and service purposes...
  • Page 35 "Diode,Rectifier" UF4005 TSC 600V 1.7V 1 D513 EAH33945901 "Diode,TVS" CDS3C30GTH 30V 50V 120 D505 EAH36641301 "Diode,Rectifier" UF4005 TSC 600V 1.7V 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...
  • Page 36 "IC,LDO Voltage Regulator" "AZ1085S-3.3TR/E1,LF 12" FB701 6210TCE003K "Filter,Bead" BAS3550T0 65TO100OHM 3 IC1000 0IPMG78341A "IC,LDO Voltage Regulator" "AZ1085S-3.3TR/E1,LF 12" L1001 6200J00005N "Filter,Bead" HH-1M2012-121JT(H:1mm) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 36 - Only for training and service purposes...
  • Page 37 6210TCE001G "Filter,Bead" HH-1M3216-501JT 500OHM L203 0LCML00020G "Inductor,Multilayer,Chip" MLI-201209-3R3K 3.3UH L1141 6200J00005N "Filter,Bead" HH-1M2012-121JT(H:1mm) L204 0LCML00020G "Inductor,Multilayer,Chip" MLI-201209-3R3K 3.3UH Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...
  • Page 38 "TR,Bipolar" KTN2907AS PNP -5V -60V Q116 0TRIY80001A "TR,Bipolar" 2SC3052 NPN 6V 50V 50V Q701 0TR222209AB "TR,Bipolar" KTN2222AS NPN 6V 75V 4 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 38 - Only for training and service purposes...
  • Page 39 R107 0RH2002D622 "Resistor,Chip" MCR10EZHJ203 20KOHM 5% AR908 EBC32260405 "Resistor,Array" MNR04M0APJ680 68OHM 5% R107 0RH2701D622 "Resistor,Chip" MCR10EZHJ272 2.7KOHM 5 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...
  • Page 40 0RJ0000D677 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 R1214 0RJ1001D677 "Resistor,Chip" MCR03EZPJ102 1KOHM 5% R1274 0RJ0222C678 "Resistor,Chip" MCR01MZPJ220 22OHM 5% Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 40 - Only for training and service purposes...
  • Page 41 0RJ0332C678 "Resistor,Chip" MCR01MZPJ330 33OHM 5% R1356 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1 R151 0RJ4703D677 "Resistor,Chip" MCR03EZPJ474 470KOHM 5 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 - Only for training and service purposes...
  • Page 42 R213 0RH0471D622 "Resistor,Chip" MCR10EZHJ4R7 4.7OHM 5% R201 0RJ0822D677 "Resistor,Chip" MCR03EZPJ820 82OHM 5% R213 0RJ4701D677 "Resistor,Chip" MCR03EZPJ472 4.7KOHM 5 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 42 - Only for training and service purposes...
  • Page 43 0RH9102D622 "Resistor,Chip" MCR10EZHJ913 91KOHM 5% R2327 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1 R309 0RJ2200D677 "Resistor,Chip" MCR03EZPJ221 220OHM 5% Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 43 - Only for training and service purposes...
  • Page 44 R429 0RJ1001D677 "Resistor,Chip" MCR03EZPJ102 1KOHM 5% R345 0RJ1000C678 "Resistor,Chip" MCR01MZPJ101 100OHM 5% R430 0RJ4701C678 "Resistor,Chip" MCR01MZPJ472 4.7KOHM 5 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 44 - Only for training and service purposes...
  • Page 45 R542 0RJ1000C678 "Resistor,Chip" MCR01MZPJ101 100OHM 5% R493 0RJ0561D677 "Resistor,Chip" MCR03EZPJ5R6 5.6OHM 5% R543 0RJ1000C678 "Resistor,Chip" MCR01MZPJ101 100OHM 5% Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 45 - Only for training and service purposes...
  • Page 46 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 R643 0RJ0342D477 "Resistor,Chip" MCR03EZPF34R0 34OHM 1% R749 0RJ0000D677 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 46 - Only for training and service purposes...
  • Page 47 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1 R831 0RJ0000D677 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 R905 0RJ0000C678 "Resistor,Chip" MCR01MZPJ000 0OHM 5% 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 47 - Only for training and service purposes...
  • Page 48 EBL35311205 "Tuner,Tuner/Modulator" TAUT-H001F NTSC 55.25M TU201 EBL35311209 "Tuner,Tuner/Modulator" TAFT-H004P NTSC 55.25M X1200 6202TST001H Crystal SX-1 27MHZ 30PPM 27MHZ Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 48 - Only for training and service purposes...
  • Page 49 "Harness,Single" YEONHO)SMH250 35097/35 6631900098F "Harness,Single" SMH250 35097/35098 120 6631T20037B "Harness,Single" 14P SHIELD WIRE SMH200 6851V00080A "Harness,Single" 1537740-1 1537113-2 1- Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 49 - Only for training and service purposes...
  • Page 50 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 52 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 54 Aug., 2007 P/NO : MFL39265902 Printed in Korea...

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