Hitachi CP-X960WA Service Manual page 19

CP-X960WA
CP-X970W
Picture is not displayed only
when the RGB signal is input
Check at operating mode
Is
picture
displayed either
selected RGB1 or
RGB2?
NO
PWB ass'y input terminal RGB
Are signal
input at each pin of
YES
EDI1 on the PWB
ass'y main?
10 , 11 : (CHK0031) : R signal
NO
6 , 7 : (CHK0035) : G signal
2 , 3 : (CHK0037) : B signal
39 : (CHK010) : H sync
38 : (CHK011) : V sync
PWB ass'y signal
YES
Is the
1/2 selected
signal changed at pin
43
(CHK007) of EDI1 on
the PWB ass'y
main?
YES
"L"=RGB1, "H"=RGB2
("H"=5V)
PWB ass'y main
PWB ass'y input Power unit
terminal RGB (circuit)
– 16 –
NO
PWB ass'y main