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LG 50PG30 Service Manual
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LG 50PG30 Service Manual

LG 50PG30 Service Manual

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See also: Owner's Manual
PLASMA TV
SERVICE MANUAL
CHASSIS : PU84C
MODEL : 50PG30
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MENU
ENTER
INPUT
CANADA : http//biz.lgservice.com
USA
: http//www.lgservice.com
: http//biz.lgservice.com
50PG30F-UA
VOL
CH
Internal Use Only

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Summary of Contents for LG 50PG30

  • Page 1 Internal Use Only CANADA : http//biz.lgservice.com : http//www.lgservice.com : http//biz.lgservice.com PLASMA TV SERVICE MANUAL CHASSIS : PU84C MODEL : 50PG30 50PG30F-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MENU ENTER INPUT...

  • Page 2: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. CANADA: LG Electronics Canada, Inc. 550 Matheson Boulevard East Mississauga, Ontario L4Z 4G3 : LG Customer Interactive Center P.O.Box 240007, 201 James Record Road Huntsville,...

  • Page 3: Table Of Contents

    ADJUSTMENT INSTRUCTIONS ..........5 TROUBLE SHOOTING GUIDE ...........11 BLOCK DIAGRAM...............42 EXPLODED VIEW...............44 EXPLODED VIEW PARTS LIST .........45 SCHEMATIC DIAGRAM............46 PRINTED CIRCUIT BOARDS ..........54 Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 3 - Only for training and service purposes...

  • Page 4: Specifications

    -4 ~ 140¡F (-20 ~ 60¡C) Storage Humidity L ess than 85% The specifications shown above may be changed without prior notice for quality improvement. Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 4 - Only for training and service purposes...

  • Page 5: Adjustment Instructions

    If display “Error”, Check connect computer, jig, and set. (3) Click “Connect” tab. If display “Can’t” , Check connect computer, jig, and set. Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 5 - Only for training and service purposes...
  • Page 6 [ Manual ADC process using Service Remocon. After enter Service Mode by pushing “ADJ” key, execute “ADC Adjust” by pushing “ ” key at “0. ADC CALIBRATION “. Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 6 - Only for training and service purposes...

  • Page 7: Adjustment Method

    3) After turning VR902,voltage of D.M.M adjustment as same as Va voltage which on label of panel right/top (deviation; ±0.5V) Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - Only for training and service purposes...
  • Page 8 Vs voltage which on label of panel right/top (deviation ; ±0.5V) (Fig. 3) 60inch Power PCB Assy Voltage Adjustment Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 8 - Only for training and service purposes...
  • Page 9 PC(for communication through RS-232C), UART baud rate: 115200 bps EDID Download Protocol (RS-232C) RGB EDID DATA HDMI-1 EDID DATA HDMI-2 EDID DATA Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes...
  • Page 10 - R-offset / G-offset / B-offset is set to 128 - Control G-Gain and B-Gain. - Each gain is limited to 192 Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 10 - Only for training and service purposes...
  • Page 11 (1) Press ADJ R/C In-start key and select 0.AREA OPTION (2) Select Country by using (VOL +/-) in accordance with destination Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes...

  • Page 12: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 12 - Only for training and service purposes...
  • Page 13 Replace IC706 & Check IC706 #2 Pin Recheck Voltage Level 2.6V Check X100 Clock Replace 100 12MHz Replace IC105 Flash Memory Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes...
  • Page 14 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 14 - Only for training and service purposes...
  • Page 15 Maybe Mstar has problems #17(TXBC-) , #16(TXBC+) Replace Cable Check LVDS Cable Check PDP Module Control board Refer to Module CAS Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes...
  • Page 16 Falling Time of Vs (90% to 10%) msec Time interval between 90% of Vcc and 90% of Vs 2000 msec when Power On Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 16 - Only for training and service purposes...
  • Page 17 SDA (continue) Command Data Stop for Addr By Slave By Slave By Master Master : Image Board Slave : PDP Module Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 17 - Only for training and service purposes...
  • Page 18 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 18 - Only for training and service purposes...
  • Page 19 Maybe Mstar(IC100) has problems #33(TXAC-) , #32(TXAC+) , #17(TXBC-) , #16(TXBC+) Check PDP Module Control board Refer to Module CAS Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 19 - Only for training and service purposes...
  • Page 20 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 20 - Only for training and service purposes...
  • Page 21 Check CVBS signal Maybe Tuner(TU400) has problems TU400 #16 Pin Check CVBS signal Replace it C112 Maybe Mstar(IC100) has problems Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 - Only for training and service purposes...
  • Page 22 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 22 - Only for training and service purposes...
  • Page 23 Replace it. C833, C834, C835, C838, C839, C840 Check signal IC601 output Replace it R631, R632, R633 Maybe Mstar(IC100) has problems Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 - Only for training and service purposes...
  • Page 24 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 24 - Only for training and service purposes...
  • Page 25 R673, R674 Check signal Replace it. R678, R679, R680 Check Signal Replace it C116, C124, C126 Maybe Mstar(IC100) has problems Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...
  • Page 26 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 26 - Only for training and service purposes...
  • Page 27 C949 (Composite) Check signal Replace it C111 (Composite), C109 / C110 (S-Video) (Rear) C174 (Composite) (Side) Maybe Mstar(IC100) has problems Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...
  • Page 28 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 28 - Only for training and service purposes...
  • Page 29 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...
  • Page 30 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 30 - Only for training and service purposes...
  • Page 31 Replace it L509, L510, L511, L512 Check Connector Replace connector JK501 Replace speaker Check speaker Maybe NTP3000A has problems. Replace it Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...
  • Page 32 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 32 - Only for training and service purposes...
  • Page 33 Check video output trouble shooting Follow procedure All source audio trouble Maybe Mstar internal audio DSP has shooting problems. Replace it Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
  • Page 34 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 34 - Only for training and service purposes...
  • Page 35 Check SIF signal Replace it C409 Follow procedure All source audio trouble Maybe Mstar audio block has problems. shooting Replace it Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...
  • Page 36 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 36 - Only for training and service purposes...
  • Page 37 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...
  • Page 38 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 38 - Only for training and service purposes...
  • Page 39 Power & I2C Signal (#5, #6) Follow procedure All source audio trouble Maybe Mstar audio block has problems. shooting Replace it Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...
  • Page 40 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 40 - Only for training and service purposes...
  • Page 41 ¥ Exception - USB power could be disabled by inrushing current - In this case, remove the device and try to reboot the TV (AC power off/on) Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 -...

  • Page 42: Block Diagram

    BLOCK DIAGRAM Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 42 - Only for training and service purposes...
  • Page 43 BLOCK DIAGRAM Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 43 - Only for training and service purposes...

  • Page 44: 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. LGE Internal Use Only - 44 -...

  • Page 45: Exploded View Parts List

    Bracket Assembly,WOOFER PDP - 42 50 60 WOOFER SPEAKER BRACKET ASSY ACQ34783521 Cover Assembly,Rear 50PG30F(HFD)-UA PB82C 50 LGERS LOCAL B/C PH ASSY ATSC, M-STAR MCK42608603 Cover,Rear PRESS PCM 0.5t 50PG3 SECD(EGI) 50PG30 B/COVER RS 3th CORE TYPEC:ATSC M-STAR MJH40272502 Supporter,PRESS EGI 1.6 GUIDE EGI 50PG6 Supp module guide,SKD EBR51295201 PCB Assembly,Main MAIN M.I PU84C 50PG30F-UA - Menual Insert PCB Assembly...

  • Page 46: Schematic Diagram

    Copyright©2008 LG Electronics. Inc. All right reserved. - 46 - LGE Internal Use Only Only for training and service purposes...
  • Page 47 Copyright©2008 LG Electronics. Inc. All right reserved. - 47 - LGE Internal Use Only Only for training and service purposes...
  • Page 48 Copyright©2008 LG Electronics. Inc. All right reserved. - 48 - LGE Internal Use Only Only for training and service purposes...
  • Page 49 Copyright©2008 LG Electronics. Inc. All right reserved. - 49 - LGE Internal Use Only Only for training and service purposes...
  • Page 50 Copyright©2008 LG Electronics. Inc. All right reserved. - 50 - LGE Internal Use Only Only for training and service purposes...
  • Page 51 Copyright©2008 LG Electronics. Inc. All right reserved. - 51 - LGE Internal Use Only Only for training and service purposes...
  • Page 52 Copyright©2008 LG Electronics. Inc. All right reserved. - 52 - LGE Internal Use Only Only for training and service purposes...
  • Page 53 Copyright©2008 LG Electronics. Inc. All right reserved. - 53 - LGE Internal Use Only Only for training and service purposes...

  • Page 54: Printed Circuit Boards

    MAIN(TOP) Copyright©2008 LG Electronics. Inc. All right reserved. - 54 - LGE Internal Use Only Only for training and service purposes...
  • Page 55 MAIN(BOTTOM) Copyright©2008 LG Electronics. Inc. All right reserved. - 55 - LGE Internal Use Only Only for training and service purposes...
  • Page 56 CONTROL(BOTTOM) CONTROL(TOP) PRE AMP(TOP) PRE AMP(BOTTOM) Copyright©2008 LG Electronics. Inc. All right reserved. - 56 - LGE Internal Use Only Only for training and service purposes...
  • Page 57 May, 2008 P/NO : MFL42921702 Printed in Korea CANADA: LG Electronics Canada, Inc. 550 Matheson Boulevard East Mississauga, Ontario L4Z 4G3 : LG Electronics Alabama, Inc. P.O.Box 240007, 201 James Record Road Bldg 3 Huntsville, AL 35824...

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50pg30f-ua

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