PDP-425CMX
146
1234
1234
C
D
F
A
B
E
In a case of inputs to INPUT2 (DVI)
Examination of the MAIN board
NO
Failure in the IC7003
YES
NO
YES
YES
NO
Is the voltage at Pin 3 of
IC7003 3.3 V DC?
Are approx. 500 mVp-p signals
input to Pins 80 and 90 of
IC7001?
Is the voltage at Pin 1 of
IC7003 5 V DC?
Failure in the IC7006
Failure in the IC5603
Failure in the IC5605
Failure in the IC5606
Failure in the MAIN PWB
Failure in the MAIN PWB
Failure in the MAIN PWB
YES
NO
Is the voltage at Pin 1 of
IC7006 7 V DC?
Check the signal output equipment and its cables.
YES
NO
Are sync signals input to Pins
48 and 47 of IC7001?
And is a CLK signal input to
Pin 44 of IC7001?
NO
Are sync signals input to Pins
7 and 9 of IC5603?
YES
NO
Are sync signals input to Pins
11 and 13 of IC5605?
YES
YES
NO
Are sync signals input to Pins
3 and 6 of IC5606?
Waveform 28
Waveform 29
Waveform 30
Waveform 31
Waveform 32
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