3-5. VIDEO CIRCUIT
25
Is video signal input
into pin and of IC151?
12
13
Is 12V supplied at
pin of IC151?
16
Is signal output from
pin of IC151?
14
Is signal input into
pin of IC301?
31
Is signal output from
pin of IC301?
28
Check PIF circuit
and LINE IN JACK.
Check ON/OFF 12V circuit.
Check IC601 pin.
Tuner mode : H
Line mode : L
Check PCB pattern.
Is 5V supplied to pin
and of IC301?
24
29
Check
power circuit.
Check IC301 pin
EE mode : L
PB mode : H
Check
IC601 pin.
29
Change IC301.
Is signal input into
pin of ICS01?
10
Is signal output from
pin of ICS01?
8
Check PCB pattern
and Q315.
Check OSD circuit.
RF out
Line out
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
HIGH
LOW
A.EE MODE PIcture N.G
NO
YES
YES
Chage IC151.
Chage IC601.
NO
NO
44
4
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