Video Circuit - Daewoo DV6T834N Service Manual

3. VIDEO circuit

A. EE screen doesnÕt appear
EE MODE Picture NG
YES
Is Video signal input at
IC301 pin#28, 30, 32?
YES
Is 5V supplied at pin#23,
45,52,68 of IC301?
YES
Is C.S, DATA, CLOCK signal
input pin#53,54,55 of IC301?
YES
Is signal output from pin#26 of
IC301?
YES
Is signal input into pin#50
of IC601?
YES
Is signal output from
pin#52 of IC601?
YES
Is signal input at IC302
pin#1?
YES
Is signal output at IC302
pin#15?
YES
Check RF Output.
NO
Check IF and LINE IN JACK.
NO
Check POWER circuit.
NO
Check IC601
pin #61, 71, 72.
NO
Check IC301
pin#24 Q-V Sync.
NO
Check PCB Pattern.
NO
Is 5V supplied to pin#53, 98,
99 of IC601?
YES
Check IC 601
NO
Check PCB Pattern.
NO
Check IC302.
LINE out.
NO
Check POWER circuit.
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