Hitachi CP-X960WA Service Manual page 21

CP-X960WA
CP-X970W
Picture is not displayed
(both RGB and VIDEO input)
Are
voltage input
at pins 4 , 6 8 , ,
14 of EDS1 on the PWB
ass'y main?
YES
Are signal
input at these
pins of EDI1 on the
PWB ass'y
main?
Are signal
input at these
pins of EMD1 on the
PWB ass'y
main?
PWB ass'y drive
Check at operating mode with RGB1 or 2 input
10 , 12 ,
NO
4 : (CHK0041) : +6.6V
6 : (CHK0043) :+17.0V
8 : (CHK0044) :+5V
10 : (CHK0038) :+5V
12 : (CHK0039) :+5V
14 : (CHK0040) :+5V
NO
PWB ass'y signal
YES
10 11
, : (CHK0031) : R signal
6 , 7 : (CHK0035) : G signal
2 , 3 : (CHK0037) : B signal
39 : (CHK010) : H sync
: (CHK011) : V sync
38
: (CHK002) : VIDEO. R signal
49
: (CHK004) : VIDEO. G signal
47
: (CHK006) : VIDEO. B signal
45
: (CHK012) : VIDEO. H sync
36
: (CHK013) : VIDEO. V sync
35
NO
PWB ass'y main
YES
36 , 45 46 , : (CHK066) : R signal
, , : (CHK065) : G signal
33 34 48
, , : (CHK064) : B signal
31 50 51
64 : (CHK075) : H sync
: (CHK074) : V sync
63
, : (CHK055) : CLK
15 66
LCD module ass'y
PWB ass'y signal
PWB ass'y input terminal RGB
PWB ass'y input terminal RGB
– 18 –
Power unit (circuit)