Sharp PG-C20X Manuel de service télécharger pdf (Page 38)

PG-C20XU

PG-C20XE

AN-Z7T

YES

Checking the RGB signal

In order to check the input

signal, set the signal

generator to the gradation

signal.

Are there gradation signals

at pins (8), (10) and (12) of

IC8012?

Are there gradation signals

at pins (16), (18) and (20)

of IC3002 connection

terminal PWB?

IC3002 or its peripheral

circuit defective. Or

SC3003 in poor contact.

Using the oscilloscope,

measure the lands (R, G

and B inputs of IC8026) of

C8204, C8208 and C8213.

Are there specified

IC8026 or its peripheral

circuit defective.

SC3001 or its peripheral

circuit defective.

IC8012 or its peripheral

circuit defective.

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Sharp PG-C20X Manuel de service Page 38