PG-C45X - diagramas.diagram...
PG-C45X - diagramas.diagram...
PG-C45X - diagramas.diagram...
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<strong>PG</strong>-<strong>C45X</strong><br />
TROUBLE SHOOTING TABLE for PC I/F UNIT (Continued)<br />
Checking of GA4 and Its Periphery<br />
Select R, G and B individually on<br />
the pattern menu in the process<br />
mode.<br />
Is picture outputted appropriately<br />
in R, G and B?<br />
No<br />
Measure the signals at pins (54),<br />
(66) and (78) of SC8001 on the<br />
oscilloscope. These signals are<br />
MSB of B/G/R/.<br />
Do the oscilloscope-measured<br />
signals match with those selected<br />
on the pattern menu?<br />
No<br />
Does the clock signal come to pins<br />
(40) and (42) of SC8001?<br />
Yes<br />
Measure the signals at TL8106,<br />
TL8107, TL8108, TL8110 and<br />
TL8111 on the oscilloscope.<br />
Do the oscilloscope-measured<br />
signals match with those selected<br />
on the pattern menu?<br />
Yes<br />
IC8029 is defective.<br />
Yes<br />
Yes<br />
No<br />
No<br />
Checking of GA4 and its periphery<br />
ends.<br />
The OUTPUT PWB is defective.<br />
Is there the clock (37.5 MHz)<br />
signal at TL8114?<br />
No<br />
Is there the clock (37.5 MHz)<br />
signal at FL8110?<br />
Yes<br />
IC8025 is defective.<br />
IC8025 is defective.<br />
42<br />
Yes<br />
No<br />
IC8029 is defective.<br />
X8005 is defective.