Pioneer PDP-42MXE20, Service Manual

Page: 26 / 120

PDP-427CMX
26
1 2 3 4
1 2 3 4
C
D
F
A
B
E
No image
In a case of INPUT3 and INPUT4
In a case of SLOT input (analog signal)
Examination of the SLOT input
Failure in the MAIN PWB
Does not either of INPUT3
or INPUT4 display?
NO
NO
NO
Failure in the VIDEO SLOT PWB
Failure in the VIDEO SLOT PWB
YES
Are the sync and clock signals
output from VIDEO SLOT PWB?
NO
NO
NO
NO
YES
Failure in the I/F PWB or
flexible cable
Are the sync and clock signals
input to pins 1, 2 and 4 of CN6301?
YES
Failure in the IC6302 and peripheral parts
Failure in the IC6301 and peripheral parts
Failure in the IC6304 and peripheral parts
Is the clock signal input to pin 2
of IC6302?
YES
Are the sync and clock signals
input to pins 168, 169 and 172 of
IC6301?
YES
Is the clock signal input to pin 2
of IC6304?
Waveform 29-1, 29-2
Waveform 29-1, 29-2
Waveform 29-1, 29-2
Waveform 29-1, 29-2
Waveform 29-2