Sharp Notevision XG-P10XU, Service Manual

Page: 44 / 122

44
XG-P10XU
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-1
Checking the clock circuit and its peripheral circuits
Yes
Yes
Yes
Yes
Yes
No
Is X8001 (6MHz) oscillating?
X8001 or its peripheral part faulty.
No
No
Is X8004 (22.165MHz) oscillating? X8004 or its peripheral part faulty.
No
Is X8005 (16.25MHz) oscillating?
X8005 or its peripheral part faulty.
Is X8003 (1.84MHz) oscillating?
No
No
Yes
No
Yes
No
No
No
No
No No
No
Yes
Yes
Yes
Yes
Yes
Yes Yes
Yes
No
Yes
No
Yes
No
Yes
Does pin (162) of IC8001 function?
X8003 or its peripheral part faulty.
IC8001 or its peripheral circuit faulty.
Are there signals at pins (100) and
(101) of IC8606? IC8004 or its peripheral parts
defective.
Is there signal at TL8616?
IC8025 or its peripheral parts
defective.
Is there signal at TL8615?
IC8609 or its peripheral parts
defective.
Go to "Checking the Sync Signal
Circuit and Its Peripherals."
Is the sync signal of split type?
Are there signals at TP8004 and
TP8005?
Output PWB defective.
No
Is the sync signal of Sync On Green
type?
Is there signal at TL8606?
IC8606 or its peripheral parts
defective.
Does the input have a below-XGA
resolution or is it video signal?
Are there signals at TPL8023,
TL8024 and TL8025? Are there signals at TL8034 and
TL8035?
IC8025 or its peripheral parts
defective.
Are there signals at TL8043, TL8041
and TL8042? IC8020 or its peripheral parts
defective.
E
E
Are there signals at TL8057 and
TL8058?
IC8029 or its peripheral parts
defective.
Are there signals at pins (19), (20),
(21), (32), (36) and (40) of P8405?
IC8609 or its peripheral parts
defective.
Go to "Checking the PLL Circuit and
its Peripherals."