LG M2452D-PUN Service Manual
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LG M2452D-PUN Service Manual

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LED LCD TV
SERVICE MANUAL
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO :
MFL63642184 (1203-REV00)
LD02M
M2452D
North/Latin America
Europe/Africa
Asia/Oceania
M2452D-PUN
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED LCD TV SERVICE MANUAL CHASSIS : LD02M MODEL : M2452D M2452D-PUN CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL63642184 (1203-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION .............. 10 TROUBLE SHOOTING ................14 BLOCK DIAGRAM .................. 22 EXPLODED VIEW .................. 23 SCHEMATIC CIRCUIT DIAGRAM .............. Copyright © 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 © LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    Copyright © LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. 3. Solder the connections. Copyright © LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Application Range

    80 % Contrst Ratio 3000 5000 Color Coordinates 0.645 0.334 Green 0.335 0.624 Blue 0.156 0.052 White 0.313 0.329 Copyright © LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: General Specification

    Software Update + Picture + Music + Move RS-232C (1EA) Commercial Mode RS-232C Input is used by Phone Jack port [CONTROL&SERVICE] Local Key (Touch) Copyright © LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 55.935 59.887 106.500 1600*900 60.000 60.000 108.000 1680*1050 64.674 59.883 119.000 1680*1050 65.290 59.954 146.250 1920*1080 67.500 60.000 148.500 Copyright © LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 50 .000 148.500 HDTV 1080P 1920* 1080 67.432 59.940 148.350 HDTV 1080P 1920* 1080 67.5 00 60.000 148.500 HDTV 1080P Copyright © LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Adjustment Instruction

    In this case, you have to channel 200KHz. recover. if all channel data is cleared, you didn’t have a DTV/ATV test on production line. Copyright © LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Function Check

    MODE Carry the command. EDID data and Download Automatically download Model option (The use of a internal download Data) Copyright © LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 4) Check the model name Instart menu -→ Factory name displayed (ex M2352D-PZN) 5) Check the Diagnostics (DTV country only) -→ Buyer model displayed (ex M2352D-PZ) Copyright © LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...

  • Page 13: White Balance Adjustment

    4.7. Outgoing condition Configuration * After all function test., press IN-STOP Key by SVC Remote controller. And make Outgoing Condition. Copyright © LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Trouble Shooting

    Voltage Level (1.5V) Recheck Check X201 Clock Check X201 Clock Replace X201 Replace X201 24MHz 24MHz Replace IC100 Flash Memory Copyright © LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 Repair Main B/D P1002(#10,11,22,23) Check FFC Cable for damage Replace Cable or open conductors. Replace T-con Board or module Copyright © LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 SCL(R2609), SDA(R2610) Check Tuner(TU2601 or 02 or 03) Replace Tuner(TU2601 or 02 or 03) SIF #6 CVBS #8 Recheck Copyright © LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 2. Check IC802 Output voltage(5V) Check Tuner(TU3701) I2C Signal Check IC100 SCL(R3702), SDA(R3701) Check Tuner(TU3701) Replace Tuner(TU3701) SIF #9, VIF #11 Recheck Copyright © LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...

  • Page 18: No Video - Component

    Replace R239,R237,R241 R239,R237,R241 C220,C218,C222 C220,C218,C222 IC101 has problem Wave form of C218 Wave form of C222 Wave form of C220 Copyright © LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 Wave form of R4025(Vsync) Wave form of R4024(Hsync) Wave form of R228/C204 Wave form of R230/C206 Wave form of R232/C208 Copyright © LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 Check I2C Signal (JK600/601) Re download EDID data (#15, #16) Replace Scaler(IC101) Check HDCP Key (IC101) Copyright © LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 Or Adapter Check Signal from IC700 Replace IC700 L702,L703, L704, L705 Check Signal from IC101 Replace IC101 SDA/SCL (R703/R214, R707/R213) Copyright © LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...

  • Page 22: Block Diagram

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

  • Page 23: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright © LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 2012.03.08 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCALER/MEMORY/EEPROM Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 2012.03.08 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCALER Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 2012.03.08 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR INTERFACE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR PCMCIA THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCIA Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR HDMI/SCART THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI/SCART Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. AUDIO IC Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR POWER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR LVDS/CON/IR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR LED DRIVER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LED Driver Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR DDR MEMORY THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 2012.03.08 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 Copyright ⓒ 2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

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