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LG 32LG30 Service Manual
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LG 32LG30 Service Manual

Lg 32lg30 lcd tv - service manual
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LCD TV

SERVICE MANUAL

CHASSIS : LA85D
MODEL : 32LG30
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
website:http://biz.LGservice.com
32LG30-UD
Internal Use Only

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Summary of Contents for LG 32LG30

  • Page 1: Service Manual

    Internal Use Only website:http://biz.LGservice.com LCD TV SERVICE MANUAL CHASSIS : LA85D MODEL : 32LG30 32LG30-UD CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION ..............9 TROUBLE SHOOTING ................14 BLOCK DIAGRAM.................. 20 EXPLODED VIEW .................. 24 SVC. SHEET ....................Copyright © 2008 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Product Safety

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2008 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 © 2008 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 © 2008 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : 0 ~ 85 % Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 1920*1080 26.97 23.976 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P Copyright © 2008 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 1920*1080 26.97 23.976 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...

  • Page 9: Adjustment Instruction

    3) Adjust by commanding AUTO_COLOR_ADJUST (0xF1) 8. FACTORY MODE : ON 9. DEBUG MODE : OFF 0x00 0x02 instruction. Copyright © 2008 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 10: Edid Data

    1) HDMI & RGB: Check Digital & Analog 2) (Only)HDMI: Check Digital only (5) Press ESC(Cancel Mode) -> F8(Auto Mode). (Set Auto Detecting) Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: White Balance

    End of gain adjust Start of offset adjust(Inner white pattern) End of offset adjust End of White Balance adjust(Inner pattern disappeared) Copyright © 2008 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 12: Adjustment Of White Balance

    Color Coordination Temp ∆UV COOL 0.276±0.002 0.283±0.002 11000K 0.0000 MEDIUM 0.285±0.002 0.293±0.002 9300K 0.0000 WARM 0.313+0.002 0.329±0.002 6500K 0.0000 Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 8) If it is OK, the GOOD LAMP is turned and the stopper is moves down, and it moves to the next process. Copyright © 2008 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only...

  • Page 14: Troubleshooting

    Check Check Demodulator Input Clock Replace X400. X400(25MHz) Check IC400(LGDT) Output Replace IC400. - Ar401, AR402 Check Mstar LVDS output. Replace Mstar(IC100). Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...

  • Page 15: Component Video

    C1711, C1712, C1713 Check signal IC903 output Replace IC903. R990, R991, R993 Check Mstar LVDS output Replace Mstar(IC100). Copyright © 2008 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 Check other set. C635(Composite), C634/ C633(S-Video)(Rear), If no problem, check signal line. R615(Composite)(Side) Check Mstar LVDS output Replace Mstar(IC100). Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 Replace the defective IC. power & I2C Signal (#5, #6) Check IC802 clock signal Replace IC802. #26, #27 Replace Mstar (IC100) Copyright © 2008 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 Check SIF buffer signal. Check SIF Signal line. Follow procedure All source audio Replace Mstar IC. trouble shooting guide. Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...

  • Page 19: Hdmi Audio

    Check SIF Signal line. Power & I2C Signal(#5, #6) Follow procedure All source audio trouble Replace Mstar IC. shooting guide. Copyright © 2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...

  • Page 20: Block Diagram

    BLOCK DIAGRAM 1. VIDEO Path Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 2. AUDIO Path Copyright © 2008 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 3. Power flow diagram Copyright © 2008 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 4. I2C Design Mstar TUNER Demodulator Audio AMP I/O exp. TDVF-H051F LGDT3304 NTP3000A M62320 Copyright © 2008 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 24: Exploded View

    It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright © 2008 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only...
  • Page 25 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 May, 2008 P/NO : MFL41524416 Printed in Korea...

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