Video Circuit - Daewoo DF-5500(S/P) Service Manual

DF-5500/DFX-5502 SVC 2006.10.14 10:6 AM

3. VIDEO circuit

A. EE screen doesn't appear
EE MODE Picture NG
YES
Is Video signal input at
IC301 pin#48,50,52,54?
YES
Is 5V supplied at
pin#42,55,72,91of IC301?
YES
Is C.S, DATA, CLOCK signal
input pin#67,68,69 of IC301?
YES
Is signal output from pin#65 of
IC301?
YES
Is signal input into pin#21
of P302?
YES
Is signal output from pin#5
of P302?
YES
Is signal input at IC301
pin#56?
YES
Is signal output at IC301
pin#61?
YES
Check RF Output.
˘ ` 11 mac001 1200DPI 80LPI
NO
Check IF and SCART JACK.
NO
Check POWER circuit.
NO
Check IC501
pin #58,71,72
NO
Check IC301
pin#62 Q-V Sync.
NO
Check PCB Pattern.
NO
Check MPEG circuit.
NO
Check PCB Pattern.
NO
Check IC301.
Check PCB Pattern & LINE
out.
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