LG 50PG20 Troubleshooting Manual
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Also See for 50PG20:
- Training manual (127 pages) ,
- Specifications (2 pages) ,
- Owner's manual (118 pages)
Related Manuals for LG 50PG20
Summary of Contents for LG 50PG20
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Page 1: Trouble Shooting Guide
TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes... - Page 2 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 - 12 - Only for training and service purposes...
- Page 3 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes...
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Page 4: No Osd Trouble Shooting
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 - 14 - Only for training and service purposes... - Page 5 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 - 15 - Only for training and service purposes...
- Page 6 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 - 16 - Only for training and service purposes...
- Page 7 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 17 - Only for training and service purposes...
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Page 8: Digital Tv Video Trouble Shooting
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 - 18 - Only for training and service purposes... - Page 9 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 19 - Only for training and service purposes...
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Page 10: Analog Tv Video Trouble Shooting
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 - 20 - Only for training and service purposes... - Page 11 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 - Only for training and service purposes...
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Page 12: Component Video Trouble Shooting
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 - 22 - Only for training and service purposes... - Page 13 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 - Only for training and service purposes...
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Page 14: Rgb Video Trouble Shooting
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 - 24 - Only for training and service purposes... - Page 15 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...
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Page 16: Av Video Trouble Shooting
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 - 26 - Only for training and service purposes... - Page 17 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...
- Page 18 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 28 - Only for training and service purposes...
- Page 19 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...
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Page 20: All Source Audio Trouble Shooting
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 - 30 - Only for training and service purposes... - Page 21 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...
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Page 22: Digital Tv Audio Trouble Shooting
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 - 32 - Only for training and service purposes... - Page 23 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
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Page 24: Analog Tv Audio Trouble Shooting
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 - 34 - Only for training and service purposes... - Page 25 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...
- Page 26 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 36 - Only for training and service purposes...
- Page 27 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...
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Page 28: Hdmi Audio Trouble Shooting
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 - 38 - Only for training and service purposes... - Page 29 TROUBLE SHOOTING GUIDE Copyright©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...