XG-P25X
48
TROUBLE SHOOTING TABLE FOR PC I/F UNIT (Continued)
Make the RGB signal settings.
Call the process mode.
Select R, G and B
individually from the pattern
menu.
Set the signal generator for
the gray-scale signal in order
to check the input signal.
Measure the gray-scale
signals at TP8001, TP8002
and TP8003 on the
oscilloscope screen.
Checking the RGB signals
Is the signal type selected
for RGB?
Go to "Checking the GA4
and its peripheral parts".
Are the gray-scale signals at
TP8001, TP8002 and
TP8003 as specified?
Are there the input signals at
C8068 and C8061?
Input PWB defective.
IC8004 or its peripheral
parts defective.
IC8025 or its peripheral parts
defective.
NO
NO
NO
YES
YES
YES
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