PG-C30XE (serv.man4). Contents, Removing of major parts, Resetting the total lamp timer, The optical unit outline, Covergence and focus adjustment, Electrical adjustment, Adjusting hte PC interface, and Troubleshooting table - Page 1-43 - Sharp Projector Service Manual (repair manual). Page 42

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42
PG-C30XE
Yes
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Is there signal at TL614?
No
No
No
IC8029 or its peripheral circuit faulty.
Yes
No
Is there signal at pin (19) of CON2 
(P8404) connecter?
Check the video 
system's blue video 
circuit and its 
peripheral circuits.
Is there signal at pin (133) of IC8606?
Is there signal at pin (133) of IC8606?
outpur PWB faulty.
IC8606 or its peripheral circuit faulty.
Are there signals at TL8048 and 
TL8049?
Are there signals at pins (85) thru (93) 
of IC8020?
IC8025 or its peripheral circuit faulty.
Are there signals at pins (74) thru (83) 
of IC8020?
IC8020 or its peripheral circuit faulty.
CON4 (P8405), IC8051 or their 
peripheral parts faulty.
Are there signals at pins (21) thru (30) 
of IC8051?
IC8609 or its peripheral circuit faulty.
output PWB faulty.
Checking the S-
XGA's blue video 
circuit and its 
peripheral circuits
Checking the VGA's 
blue video circuit 
and its peripheral 
circuits
D
D
Are there signals at pins (45) thru 
(49), (51), thru (53), (56) thru (58), 
(60) thru (64) of IC8606?
Are there signals at pins (45) thru 
(49), (51), thru (53), (56) thru (58), 
(60) thru (64) of IC8606?
Yes
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-5
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