LG 42PG6900 Service Manual
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PLASMA TV
SERVICE MANUAL
CHASSIS : PD84A
MODEL : 42PG6900
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
INPUT
MENU
ENTER
VOL
website:http://biz.LGservice.com
42PG6900-ZF
CH
Internal Use Only

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Summary of Contents for LG 42PG6900

  • Page 1 Internal Use Only website:http://biz.LGservice.com PLASMA TV SERVICE MANUAL CHASSIS : PD84A MODEL : 42PG6900 42PG6900-ZF CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. ENTER INPUT MENU...
  • Page 2: Table Of Contents

    SPECIFICATION ......................4 ADJUSTMENT INSTRUCTION ...................6 BLOCK DIAGRAM.....................13 EXPLODED VIEW ....................17 EXPLODED VIEW PARTS LIST................18 SVC. SHEET ......................19 PRINTED CIRCUIT DIAGRAM ..................36 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 3: Safety Precautions

    When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 4: Specification

    2)Humidity : 20 ~ 80% Storage Environment 3)Temp. : -20 ~ 60deg 4)Humidity : 10 ~ 90% Input Voltage 100-240V~, 50/60Hz Maker : LG Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 HDMI Input(3EA) HDMI-PC(HDMI 1 only) Rear 2EA HDMI-DTV & SOUND Side 1EA Audio Input (4EA) PC Audio, Component, AV L/R Input Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6: Adjustment Instruction

    (3) Press INSTART key on R/C for adjustment. (4) Press the (Vol. +) key operate to set, then it becomes automatically. Auto-RGB OK means completed adjustment Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 (6) Press the (Vol. +) key to operate the set, then it becomes automatically (7) Auto-RGB OK means the adjustment is completed Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8: Adjustment Method

    (3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub 15Pin cable, DVI to HDMI cable. 8-2. Setting of Device <Fig. 5> Connection Diagram of DDC download Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 : ex) HDMI 1 : 10, HDMI 2 : 20 ~ HDMI 3 : Year: ‘2006’ ==> ‘10’ Model Name(Hex): [ EDID Download is needed HDMI1~HDMI3. Checksum: Changeable by total EDID data. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 (3) Enter “W/B ADJUST” by pushing “ ” key at “3. W/B ADJUST”. PC (for communication through RS-232C) ==> UART Baud rate : 115200 bps Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 (4) Adjustment Commands (LENGTH = 84) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0, Phase Data write : Model Name and Serial Number write in EEPROM,. Delay : 20ms Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13: Block Diagram

    BLOCK DIAGRAM Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17: Exploded View

    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. LGE Internal Use Only Only for training and service purposes...
  • Page 18: Exploded View Parts List

    Copyright©2008 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 19: Svc. Sheet

    Copyright©2008 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 Copyright©2008 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 Copyright©2008 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 Copyright©2008 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 Copyright©2008 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 Copyright©2008 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 Copyright©2008 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 Copyright©2008 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
  • Page 27 Copyright©2008 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...
  • Page 28 Copyright©2008 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
  • Page 29 Copyright©2008 LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only Only for training and service purposes...
  • Page 30 Copyright©2008 LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only Only for training and service purposes...
  • Page 31 Copyright©2008 LG Electronics. Inc. All right reserved. - 32 - LGE Internal Use Only Only for training and service purposes...
  • Page 32 Copyright©2008 LG Electronics. Inc. All right reserved. - 33 - LGE Internal Use Only Only for training and service purposes...
  • Page 33 Copyright©2008 LG Electronics. Inc. All right reserved. - 34 - LGE Internal Use Only Only for training and service purposes...
  • Page 34 Copyright©2008 LG Electronics. Inc. All right reserved. - 35 - LGE Internal Use Only Only for training and service purposes...
  • Page 35 MAIN(TOP) Copyright©2008 LG Electronics. Inc. All right reserved. - 36 - LGE Internal Use Only Only for training and service purposes...
  • Page 36: Printed Circuit Diagram

    MAIN(BOTTOM) Copyright©2008 LG Electronics. Inc. All right reserved. - 37 - LGE Internal Use Only Only for training and service purposes...
  • Page 37 PRE-AMP(TOP) PRE-AMP(BOTTOM) CONTROL(BOTTOM) CONTROL(TOP) Copyright©2008 LG Electronics. Inc. All right reserved. - 38 - LGE Internal Use Only Only for training and service purposes...
  • Page 38 May, 2008 P/NO : MFL48161205 Printed in Korea...

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