Pioneer PDP 507CMX, Service Manual

Page: 106 / 210

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