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LG D237IPS Service Manual
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LG D237IPS Service Manual

LG D237IPS Service Manual

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Download this manual See also: Owner's Manual
COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM94H
MODEL:
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67261203 (1108-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
D237IPS
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 D237IPS

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM94H D237IPS MODEL: CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67261203 (1108-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    TIMING CHART ..................10 ADJUSTMENT ..................11 BLOCK DIAGRAM...................15 TROUBLE SHOOTING ................20 EXPLODED VIEW .................. 24 SCHEMATIC CIRCUIT DIAGRAM .............. Copyright © 2011 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Precaution

    CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation. Copyright © 2011 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    Copyright © 2011 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • 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: Specifications

    Tilt Degree -5° ~ 18° Tilt force 0.8 kg ~ 2.0 kg Appearance General Refer to Standard of LG(56)G2-1011 Copyright © 2011 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 Environment Humidity 10 % ~ 80 % Condition Temperature -20°C ~ 60°C Storage Humidity 5% ~ 90% non-condensing Copyright © 2011 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 C: The Distance from The Top of Active Area to the Bezel D: The Distance from The Bottom of Active Area to the Bezel Bezel Copyright © 2011 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only...
  • Page 9 6.1.1 EDID Ver. 1.3 FOR ANALOG ( 128Byte) 6.1.2 EDID Ver. 1.3 FOR DIGITAL (128Byte) 6.1.3 EDID Ver. 1.3 FOR HDMI (256Byte) Copyright © 2011 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Timing Chart

    TIMING CHART (1) Signal(Video & Sync) (2) H/V Timing Copyright © 2011 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Adjustment

    (refer to the Adjustment standard and adjustment command table) - Display the result of ADC on Aging Mode OSD and Service OSD D237IPS Model doesn’t use internal ADC. If don’t use internal 3.2.1 Board Assembly Line ADC, please follow below step.
  • Page 12 Command code. 3.2.5.8. DDC EDID Write HDMI part EDID data D237IPS No need input HDMI EDID on the line, F/W include 3.2.4.5. Confirm User color coordinates . HDMI EDID, aging on MODE If AC ON, HDMI EDID automatic · Confirm Whether User color is saved same as WARM(6500K).
  • Page 13 Pattern 9 : 8 Color Bar Pattern + 16 Gray Level Pattern Pattern 10 : SMPTE Pattern Pattern 11 : 16 Gray Step Pattern (700mV) Copyright © 2011 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only...
  • Page 14 - mode12(1920x1080 @60Hz), - Burst pattern - 230Vac @50Hz - Analog & Digital & HDMI - After aging 30min Copyright © 2011 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Block Diagram

    BLOCK DIAGRAM (Main) Copyright © 2011 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 H/V signal, and set the resister value in each IC to control. Next, control auto set, H/V position, clock and phase that user could control by OSD. 4. ETC. Key, ambient Sensor, Headphone out Copyright © 2011 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 LPB BLOCK DIAGRAM(Power Side) Copyright © 2011 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 LPB BLOCK DIAGRAM(LED Driver Side) Copyright © 2011 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 10) Boost up Circuit : This is circuit to make high DC Voltage more than LED String Voltage. 11) LED CONTROLLER : This is circuit to use LED circuit control, circuit protection function. Copyright © 2011 LG Electronics. Inc. All right reserved. - 19 -...

  • Page 20: Trouble Shooting

    TROUBLESHOOTING GUIDE 1. NO POWER Copyright © 2011 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 2. NO RASTER (OSD IS NOT DISPLAYED) – LPB Copyright © 2011 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 3. NO RASTER (OSD IS NOT DISPLAYED) – MAIN Copyright © 2011 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 4. TROUBLE IN DPM Copyright © 2011 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: 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. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 Copyright ⓒ 2011 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...