LG L1717SBN Service Manual - Page 17

Waveforms

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4. TROUBLE IN DPM TROUBLE IN DPM CHECK 3 R216, R217 R778, R781 YES CHECK U501 PIN 43.44 SYNC PULSE ? YES TROUBLE IN U501 CHECK PC NO PC IS NOT GOING INTO DPM OFF MODE NO CHECK H/V SYNC LINE Waveforms 3 R216, R778 H-Sync 3 R217, R781 V-Sync - 17 -

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4. TROUBLE IN DPM
3
Waveforms
R216, R778 H-Sync
3
R217, R781 V-Sync
TROUBLE IN DPM
NO
NO
TROUBLE IN U501
CHECK PC
PC IS NOT GOING
INTO DPM OFF MODE
CHECK H/V SYNC LINE
YES
YES
CHECK
R216, R217
R778, R781
CHECK
U501 PIN 43.44
SYNC
PULSE ?
3