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TY-LCD20W, L202WA-BJB (CHASSIS:LM62C) - LG TV Service Manual (repair manual). Page 19

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- 19 -
ⓒ
2008 LG Electronics. Inc. All right reserved.
4. TROUBLE IN DPM
TROUBLE IN DPM
TROUBLE IN IC502
CHECK PC 
PC IS GOING
INTO DPM MODE 
NO
CHECK H/V SYNC LINE
NO
YES
CHECK R606 AND
R608, SYNC
APPEARED?
CHECK
IC502 PIN 168,169
SYNC PULSE
YES
1
H-SYNC
2
V-SYNC
Waveforms
1
2
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