Pioneer PDP-425CMX Service Manual page 146

1
A
In a case of inputs to INPUT2 (DVI)
Examination of the MAIN board
Are approx. 500 mVp-p signals
input to Pins 80 and 90 of
IC7001?
YES
Is the voltage at Pin 3 of
B
IC7003 3.3 V DC?
YES
Are sync signals input to Pins
C
48 and 47 of IC7001?
And is a CLK signal input to
Pin 44 of IC7001?
YES
Are sync signals input to Pins
7 and 9 of IC5603?
YES
Are sync signals input to Pins
11 and 13 of IC5605?
D
YES
Are sync signals input to Pins
3 and 6 of IC5606?
YES
Failure in the MAIN PWB
E
F
146
1
2
Waveform 28
NO
Check the signal output equipment and its cables.
NO
Is the voltage at Pin 1 of
IC7003 5 V DC?
NO
Is the voltage at Pin 1 of
IC7006 7 V DC?
NO
Failure in the MAIN PWB
Waveform 29
NO
Failure in the MAIN PWB
Waveform 30
NO
Failure in the IC5603
Waveform 31
NO
Failure in the IC5605
Waveform 32
NO
Failure in the IC5606
PDP-425CMX
2
3
YES
Failure in the IC7003
YES
Failure in the IC7006
3
4
4