PG-C45X - diagramas.diagram...
PG-C45X - diagramas.diagram...
PG-C45X - diagramas.diagram...
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41<br />
<strong>PG</strong>-<strong>C45X</strong><br />
TROUBLE SHOOTING TABLE for PC I/F UNIT (Continued)<br />
Checking of R, G and B Signals<br />
Is the signal type set to RGB?<br />
Yes<br />
Set the process mode.<br />
Select R, G and B individually on<br />
the pattern menu.<br />
Go to "Checking of GA4 and Its<br />
Periphery".<br />
For checking the input signal, set<br />
the signal generator to gradation<br />
signal.<br />
Measure the signals at TL8169,<br />
TL8170 and TL8180 on the<br />
oscilloscope. (MSB bit after A/D<br />
conversion)<br />
Are there the specified signals at<br />
TL8169, TL8170 and TL8180?<br />
Yes<br />
IC8025 or its periphery is defective.<br />
No<br />
No<br />
Set the signal type to RGB.<br />
Does the signal come to C8062,<br />
C8070 and C8078?<br />
Yes<br />
IC8013 or its periphery is defective.<br />
No<br />
Go to "Confirmation of Video Input".
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