Pioneer PDP-507CMX Service Manual page 106

1
A
⇒ INPUT 3 or INPUT 4
(COMP / S1)
Does not either of INPUT3 or
INPUT4 display?
No
Are the sync and clock signals
output from VSIF Assy ?
Waveform 29-1, 29-2
B
No
Are the sync and clock signals
input to pins 1, 2 and 4 of
CN6301?
Waveform 29-1, 29-2
Yes
Is the clock signal input to pin 2 of
IC6302?
Waveform 29-2
C
Yes
Are the sync and clock signals
input to pins 168, 169 and 172 of
IC6301?
Waveform 29-1, 29-2
Yes
Is the clock signal input to pin 2 of
IC6304?
Waveform 29-1, 29-2
Yes
D
Failure in the MAIN Assy
E
F
106
1
2
Yes
Failure in the VSIF Assy
No
Failure in the VSIF Assy
No
Failure in the COMMSLOT IF
Asssy or flexible cable
No
Failure in the IC6302 and
peripheral parts
No
Failure in the IC6301 and
peripheral parts
No
Failure in the IC6304 and
peripheral parts
PDP-507CMX
2
3
3
4
4