Hitachi CP-X960WA Service Manual page 20

Picture is not displayed only
when the VIDEO signal is
input
Check at operating mode
Is
a voltage
input at pin 6 of
NO
EVSI on the PWB ass'y
input terminal
VIDEO?
+9V
YES 6
Are the
input signals
output at pins , 1 , of
3 5
NO
EVSI on the PWB ass'y
input terminal
VIDEO?(*)
* Input both S signal &
composite video signal
YES
1 Video signal
3 Y signal
5 C signal
Are
signal input at
NO
each pin of EDI1 on the
PWB ass'y main?
YES
49 : (CHK002) : VIDEO. R signal
: (CHK004) : VIDEO. G signal
47
: (CHK006) : VIDEO. B signal
45
: (CHK012) : VIDEO. H sync
36
: (CHK013) : VIDEO. V sync
35
PWB ass'y main
PWB ass'y signal
PWB ass'y input
terminal VIDEO
PWB ass'y input
PWB ass'y signal
terminal RGB
– 17 –
Power unit
(circuit)
Power unit
(circuit)
CP-X960WA
CP-X970W