Sharp PG-C20XU, PG-C20XE Handbuch Seite 38

PG-C20XU
PG-C20XE
AN-Z7T
Checking the RGB signal
In order to check the input
signal, set the signal
generator to the gradation
signal.
Using the oscilloscope,
measure the lands (R, G
and B inputs of IC8026) of
C8204, C8208 and C8213.
Are there specified
NO
Are there gradation signals
at pins (8), (10) and (12) of
IC8012?
YES
IC8012 or its peripheral
circuit defective.
YES
IC8026 or its peripheral
circuit defective.
NO
Are there gradation signals
at pins (16), (18) and (20)
of IC3002 connection
terminal PWB?
YES
IC3002 or its peripheral
circuit defective. Or
SC3003 in poor contact.
38
NO
SC3001 or its peripheral
circuit defective.