LG M2762DP-EML Service Manual

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LCD MONITOR TV

SERVICE MANUAL

CHASSIS : LD93E

MODEL : M2762DP

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL62477319(1006-REV00)

North/Latin America

Europe/Africa

Asia/Oceania

M2762DP-EML

Internal Use Only

http://aic.lgservice.com

http://eic.lgservice.com

http://biz.lgservice.com

Printed in Korea

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Summary of Contents for LG M2762DP-EML

Page 1: Service Manual
Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD MONITOR TV SERVICE MANUAL CHASSIS : LD93E MODEL : M2762DP M2762DP-EML CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL62477319(1006-REV00) Printed in Korea...
Page 2: Table Of Contents
PRECAUTIONS ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............13 TROUBLE SHOOTING ................16 BLOCK DIAGRAM...................24 EXPLODED VIEW .................. 28 SVC. SHEET ....................Copyright ©2010 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
Page 3: Precautions
An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright ©2010 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
Page 4: Servicing Precautions
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 ©2010 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 ©2010 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 6: Specification
MTBF 50,000 HRS with 90%Confidence level Lamp Life : 50,000 Hours(min) Using Altitude 5,000 m (for Reliability) 3,000m(for FOS) Copyright ©2010 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
Page 7 2) Humidity : 0 ~ 90 % 5. Chroma & Brightness Test Condition : Default Mode at Each PSM Copyright ©2010 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 8 C: Interval between top of active area and bezel D: Interval between bottom of active area and bezel Bezel 6. LCD Module Optical characteristics Panel Optical Char. Copyright ©2010 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 9 1680* 1050 64.674 59.883 119.0 1680* 1050 65.290 59.954 146.25 1600* 1200 75.0 60.0 162.0 1920* 1080 66.587 59.934 138.5 Copyright ©2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 10 **: week ***: year ex) when year 2006 : input “10” **** : CHECK SUM (deferent along Serial No, week, year) Copyright ©2010 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
Page 11 : physical address.(HDMI1 : 10, HDMI2 : 20) / **(week), ***(year), ****(Check sum) : Adjustable Data Adjustable Datas(Serial No, week, Year and Check sum) in HDMI EDID are same with RGB/DVI Copyright ©2010 LG Electronics. Inc. All right reserved. - 11 -...
Page 12 *Appearance Gap spec Appearance General Refer to Standard of LG(55)G1-1020 Front: 0.5 mm Back & Bottom : 1.0 m Copyright ©2010 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 13: Adjustment Instruction
If display "Can’t ", Check connect computer, jig, and set. Please Check the Speed : To use speed between from 200KHz to 400KHz Copyright ©2010 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
Page 14 MSPG925 _ HDCP Key value is different among the sets. Adjustment pattern (COMPONENT ) Copyright ©2010 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 15 Confirm whether is normal or not when between power board's ac block and GND is impacked on 1.5kV(dc) or 2.2kV(dc) for one second Copyright ©2010 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 16: Trouble Shooting
Voltage Level (3.3V) Check X101 Clock Replace X 101 12MHz Replace IC 105 Flash Memory Wave form of X101 Copyright ©2010 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
Page 17 Check L VDS Cable for damage or ope n Replace Ca ble con ductors . Check L CD Module Control board (Refer to Module CAS) Copyright ©2010 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 18 #10(TXEC+) , #11(TXEC-) , #22(TXOC+) , #23(TXOC-) Check L CD Module Control board Refer to Mo dule CAS Wave form of X400 Copyright ©2010 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
Page 20 The Waveforms depend on input signal C121,C122,C119) IC101 has problem Waveform of R105/C122 Waveform of R104/C121 Waveform of R119/C119 Copyright ©2010 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
Page 21 C137,C134,C135) IC101 has problem The Waveforms depend on input signal Waveform of R625(S-video) Waveform of R626(S-video) Waveform of R611(CVBS) Copyright ©2010 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
Page 22 Check HDC P Key NVRAM (IC105) Replace IC105 Pow er & I2C Signal (# 5, #6) IC101 has problem Copyright ©2010 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
Page 23 Check Signal from IC500 Replace IC 500 L502, L503, L504, L505 Check Signal from IC101 Replace IC 101 (R173, R174, R175, R176) Copyright ©2010 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
Page 27 10) INVERTER TRANSFORMER : This change DC Voltage to input from Inverter FET to AC Voltage. 11) INVERTER CONTROLLER : This is circuit to use inverter circuit control, circuit protection function. Copyright ©2010 LG Electronics. Inc. All right reserved. - 27 -...
Page 28: 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. - 28 - LGE Internal Use Only Only for training and service purposes...

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LG M2762DP-EML Service Manual

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