Sharp XG-P25X Service Anleitung Seite 48

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