Sharp XG-PH50X Serviceanleitung Seite 61

RGB signal check
Is the Signal Type set to
RGB?
YES
Enter the process mode.
Select R, G and B separately
in the pattern menu.
Go to "Checking the
periphery of GA5".
Set the signal generator to
the gradation signal to check
the input signal.
Measure TL8027, 8029 and
8031 with an oscilloscope.
(MSBbit after AD conversion)
Are signals properly sent
from TL8027, 8029 and
8031?
YES
The periphery of
IC8025 is defective.
NO
Set the Signal Type to RGB.
NO
Are signals supplied to
C8164, C8165 and C8166?
YES
The periphery of IC8017 is
defective.
61
NO
Go to "Video input check".
XG-PH50X
XG-PH50X-NL