LG 37HIZ22 Service Manual
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LG 37HIZ22 Service Manual

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LCD TV
SERVICE MANUAL
CHASSIS : LP62F
MODEL : 37HIZ22
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
37LC2RHA-ZH
R
Internal Use Only
website:http://biz.LGservice.com

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  • Page 1 Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LP62F MODEL : 37HIZ22 37LC2RHA-ZH CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    TROUBLE SHOOTING ................16 BLOCK DIAGRAM...................22 EXPLODED VIEW..................24 EXPLODED VIEW PARTS LIST ..............25 REPLACEMENT PARTS LIST ..............26 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

    An other abnormality exists that must be corrected before the receiver is returned to the customer. 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

    1) Temp : -20 ~ 50 deg 2) Humidity : 10 ~ 90 %RH Display LCD Module 32"/42" : LPL 37" : AUO, LPL Copyright © 2007 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 1366 x 768 Pixels RGB strip arrangement Coating Hard coating(3H), Anti-glare treatment of the front polarizer Back Light 32" 20EEFL 37" 20EEFL 40” 20CCFL Copyright © 2007 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 HDTV 1080I 1920 x 1080 33.75 60.00 74.250 HDTV 1080I 1920 x 1080 28.125 50.00 74.250 HDTV 1080I 50Hz Copyright © 2007 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 WXGA(42XGA,50", 60") 1360 x 768 47.700 60.00 84.62 WXGA(42XGA,50", 60") 1366 x 768 47.700 60.00 84.62 WXGA(42XGA,50", 60") Copyright © 2007 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 Tilt Degree Without Tilt function Tilt force Swivel Degree Swivel Force Appearance General Refer to Standard of LG(55)G1-1020 Copyright © 2007 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Adjustment Instruction

    1. Application Range 4.1. EDID Data This spec. sheet is applied to all of the LP62F chassis(H3- Item Data Condition High) manufactured at LG TV Plant all over the world. Manufacturer ID 1E6D Version Digital : 1 Revision Digital : 3 2.
  • Page 12 - AV ADC(ZH: AV3, TH : AV1, MH: VIDEO1) should be => Model: 217 / Pattern: 33 done before White-balance. Copyright © 2007 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 ACK : 0 - With signal G-Gain ACK : 1 -> Without signal ACK : 2 -> Power Off B-Gain R-Offset G-Offset B-Offset Copyright © 2007 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 2) Select “OPTION2” by using (CH +/-) key, and press the number key (0~9). 3) Option3,4,5 are same as option1,2. Copyright © 2007 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 XD Demo To start Screen Auto config. Manual config. XGA/VGA mode Variable by each mode PFP Transparency Reset Copyright © 2007 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...

  • Page 16: Troubleshooting

    11. Check the Y B/D Module high tension circuit output circuit output circuit Manufacture enterprise meaning of a passage Copyright © 2007 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 CN101 connection cable), authorizes the AC voltage marking on manual. When ST-BY 5V does not operate, replace Power Board. Copyright © 2007 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 1. Check the Main Board. Is the VSC Is the P804's 1. Change the Main Board.ß Board normal? output normal? Copyright © 2007 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Replace Ctrl Board in Plasma panel. Plasma normal? Is the LCD Replace LCD Module Module normal? LCD TV Copyright © 2007 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 Is the Input voltage, IIC Is the IC800 Replace IC800. Communication and HV normal? sync normal? Copyright © 2007 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 Check the signal after IC300 refer to circuit diagram. Only RF is Check the Tuner In/Out. no sound? Copyright © 2007 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...

  • Page 22: Block Diagram

    BLOCK DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 MEMO Copyright © 2007 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: Exploded View

    EXPLODED VIEW Copyright © 2007 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...

  • Page 25: Exploded View Parts List

    Speaker,Woofer, g1560102 ND 15W 8OHM 82DB 100HZ 193 X 57 X 50 LUG MACOM EAJ32763501 LCD,Module-TFT, LC370WX1-SL15 WXGA 37.0INCH 1366X768 500CD COLOR 72% 16/9 800:1 A-TW Pol. P6 LG PHILIPS LCD ACQ30192611 Cover Assembly, 37LC2RHA-ZH LP62F 37" LGEMA PHANTOM OF 37LC2RHA-ZH cabinet assy.

  • Page 26: Replacement Parts List

    "Capacitor,AL,Chip" MVK6.3TP16VC100M 100uF C2211 0CE476WH6DC "Capacitor,AL,Chip" MVK8.0TP25VC47M 47uF 2 C1130 0CE107WF6DC "Capacitor,AL,Chip" MVK6.3TP16VC100M 100uF C224 0CE477SF6DC "Capacitor,AL,Chip" VMV477M016S0ANG030 470 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 26 - Only for training and service purposes...
  • Page 27 C1077 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C982 0CE476WF6DC "Capacitor,AL,Chip" MVK6.3TP16VC47M 47uF 2 C1078 0CK103CK56A "Capacitor,Ceramic,Chip" 0603B103K500CT 10nF 10 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...
  • Page 28 C1423 0CK103CK56A "Capacitor,Ceramic,Chip" 0603B103K500CT 10nF 10 C1214 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C1424 0CK105CF94A "Capacitor,Ceramic,Chip" 0603F105Z160CT 1uF -20 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 28 - Only for training and service purposes...
  • Page 29 C352 0CK563CK56A "Capacitor,Ceramic,Chip" C1608X7R1H563KT 56nF 1 C2004 0CC100CK41A "Capacitor,Ceramic,Chip" C1608C0G1H100JT 10pF 5 C353 0CK223CK56A "Capacitor,Ceramic,Chip" UMK107JB223KA-T 22nF 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...
  • Page 30 "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C863 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C557 0CC221CK41A "Capacitor,Ceramic,Chip" C1608C0G1H221JT 220pF C864 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 30 - Only for training and service purposes...
  • Page 31 C986 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C921 0CK103CK56A "Capacitor,Ceramic,Chip" 0603B103K500CT 10nF 10 C988 0CK226FF67A "Capacitor,Ceramic,Chip" EMK325BJ226MM-T 22uF 2 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...
  • Page 32 "Filter,Bead" HH-1M3216-501JT 500OHM ZD1002 0DZRM00178A "Diode,Zener" UDZS5.1B 5.1V 4.98TO5. L1015 6210TCE001G "Filter,Bead" HH-1M3216-501JT 500OHM ZD2200 0DZRM00178A "Diode,Zener" UDZS5.1B 5.1V 4.98TO5. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 32 - Only for training and service purposes...
  • Page 33 FET SI4925BDY P-CHANNEL MO L1902 6210TCE0013 "Filter,Bead" HB-1M1608-121JT 120OHM IC1203 0TR830009BA FET BSS83 N-CHANNEL MOSFET L1903 6210TCE0013 "Filter,Bead" HB-1M1608-121JT 120OHM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
  • Page 34 "TR,Bipolar" 2SC3875S(ALY) NPN 5V 6 R1008 0RJ1002D677 "Resistor,Chip" MCR03EZPJ103 10KOHM 5% Q422 0TR387500AA "TR,Bipolar" 2SC3875S(ALY) NPN 5V 6 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 34 - Only for training and service purposes...
  • Page 35 R1408 0RJ1002D677 "Resistor,Chip" MCR03EZPJ103 10KOHM 5% R1223 0RJ1000D677 "Resistor,Chip" MCR03EZPJ101 100OHM 5% R141 0RJ1001D677 "Resistor,Chip" MCR03EZPJ102 1KOHM 5% Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...
  • Page 36 0RH0000D622 "Resistor,Chip" MCR10EZHJ000 0OHM 5% 1 R1810 0RJ4701D677 "Resistor,Chip" MCR03EZPJ472 4.7KOHM 5 R200 0RJ1002D677 "Resistor,Chip" MCR03EZPJ103 10KOHM 5% Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 36 - Only for training and service purposes...
  • Page 37 R314 0RJ2200D677 "Resistor,Chip" MCR03EZPJ221 220OHM 5% R218 0RJ4700D677 "Resistor,Chip" MCR03EZPJ471 470OHM 5% R315 0RJ1001D677 "Resistor,Chip" MCR03EZPJ102 1KOHM 5% Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...
  • Page 38 0RJ0752D677 "Resistor,Chip" MCR03EZPJ750 75OHM 5% R408 0RJ0000D677 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 R507 0RJ4701D677 "Resistor,Chip" MCR03EZPJ472 4.7KOHM 5 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 38 - Only for training and service purposes...
  • Page 39 R879 0RJ0332C678 "Resistor,Chip" MCR01MZPJ330 33OHM 5% R818 0RJ2701D677 "Resistor,Chip" MCR03EZPJ272 2.7KOHM 5 R879 0RJ0332D677 "Resistor,Chip" MCR03EZPJ330 33OHM 5% Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...
  • Page 40 "Resistor,Chip" MCR01MZPJ680 68OHM 5% 6631T20033T "Harness,Single" SMH200-05P SMH200-05P R976 0RJ2700C678 "Resistor,Chip" MCR01MZPJ271 270OHM 5% 6631T20041C "Harness,Single" 12P(PHR) PHR-12 PHR-12 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 40 - Only for training and service purposes...
  • Page 41 "Harness,Single" SMH200 SMH200 1200mM 2 6631900092A "Harness,Single" PHR PHR 800mM 2.00MM 1 6631900108C "Harness,Single" SMH200 SMH200 350mM 2. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 - Only for training and service purposes...
  • Page 42 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 Jul., 2007 P/NO : MFL36483001 Printed in Korea...

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