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LG DM2780D Service Manual

Cinema 3d tv, chassis : ld93k.
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CINEMA 3D TV
SERVICE MANUAL
CHASSIS : LD93K
MODEL : DM2780D
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL63642458(1110-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
DM2780D-PUM
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 DM2780D

  • Page 1

    Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com CINEMA 3D TV SERVICE MANUAL CHASSIS : LD93K MODEL : DM2780D DM2780D-PUM CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL63642458(1110-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    PRECAUTIONS ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............12 TROUBLE SHOOTING ................16 BLOCK DIAGRAM...................24 EXPLODED VIEW .................. 25 SCHEMATIC CIRCUIT DIAGRAM .............. Copyright ©2011 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 ©2011 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 ©2011 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 ©2011 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    Variation(%) 75 % Contrst Ratio 1000 Color Coordinates 0.642 0.335 Green 0.299 0.636 Blue 0.153 0.043 White 0.313 0.329 Copyright ©2011 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7

    Software Update + Picture + Music + Movie RS-232C Commercial Mode Local Key (Touch) INPUT, MENU, OK, FVOLG, EPRD, POWER Copyright ©2011 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 8

    * If input signal is 100 IRE full white pattern, the luminance and color coordinate will depend on the panel. When testing DFC, please wait for at least 1 minutes after checking luminance at black pattern. Copyright ©2011 LG Electronics. Inc. All right reserved. - 8 -...

  • Page 9

    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 ©2011 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10

    1920* 1080 56.25 148.5 HDTV 1080P 1920* 1080 67.432 59.94 148.350 HDTV 1080P 1920* 1080 67.5 60.00 148.5 HDTV 1080P Copyright ©2011 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11

    - Product ID : 22685 9.2 HDMI EDID Data - Product ID : 22687 *(week), **(year), ***(Check sum) : Adjustable Data Copyright ©2011 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 12: Adjustment Instruction

    2. Set as below, and then click "Auto Detect" and check "OK" Please Check the Speed : To use speed between from 200KHz to 400KHz Copyright ©2011 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...

  • Page 13

    ADC Calibration°±. 3) Push the “Start” button. 4) ADC Calibration External is executed automatically. 5) Press “EXIT”key on R/C. Copyright ©2011 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14

    3) Input the Factory model name(ex M2380DF-PZ) or Serial than x,y target of each color temperature. number like photo. Copyright ©2011 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15

    5.5 Outgoing condition Configuration * After all function test., press IN-STOP Key by SVC Remote controller. And make Outgoing Condition. Copyright ©2011 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...

  • Page 16: Troubleshooting

    TROUBLESHOOTING 1. Power- Up Boot Fail Trouble Shooting Copyright ©2011 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...

  • Page 17

    2. No Picture Trouble Shooting Copyright ©2011 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...

  • Page 18

    3. Digital TV Video Trouble Shooting Copyright ©2011 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...

  • Page 19

    4. Analog TV Video Trouble Shooting Copyright ©2011 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...

  • Page 20

    5. Component Video Trouble Shooting Copyright ©2011 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...

  • Page 21

    6. RGB Video Trouble Shooting Copyright ©2011 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...

  • Page 22

    7. HDMI Video Trouble Shooting Copyright ©2011 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...

  • Page 23

    8. All Source Audio Trouble Shooting Copyright ©2011 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: Block Diagram

    BLOCK DIAGRAM Copyright ©2011 LG Electronics. Inc. All right reserved. - 24 - - 24 - LGE Internal Use Only Only for training and service purposes...

  • Page 25: 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. - 25 - LGE Internal Use Only Only for training and service purposes...

  • Page 26

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 27

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 28

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 29

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 30

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 31

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 32

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 33

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 34

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 35

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 36

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 37

    평가판에서 만든 PDF www.softvision.co.kr Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

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