Read Sharp XG-V10WE (serv.man8) Service Manual online
56
XG-V10WE
AN-SD1E/S422E
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-10
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Checking the VIDEO sync signal
Measure the TL135 output on
oscilloscope screen.
oscilloscope screen.
Is the vertical sync signal as
specified?
specified?
Measure the TL132 output on
oscilloscope screen.
oscilloscope screen.
Is the horizontal sync signal as
specified?
specified?
Are there horizontal and
vertical sync signals at TL130
and TL131?
vertical sync signals at TL130
and TL131?
Check the input signal settings.
Input PC board defective.
IC302 or its peripherals
defective.
defective.
Is the pulse output at pin (4) of
IC328 in the same timing as
the horizontal signal?
IC328 in the same timing as
the horizontal signal?
CVIC_IC or its peripherals
defective.
defective.
Is the pulse output at pin (5) of
IC328 in the same timing as
the pulse at pin (4)?
IC328 in the same timing as
the pulse at pin (4)?
CVIC_IC or its peripherals
defective.
defective.
Is there 69-MHz or so clock at
FL102?
FL102?
No problem with the VIDEO
sync signal and clock.
sync signal and clock.
IC328 (PLL_IC) or its
peripherals defective.
peripherals defective.
»
Checking the VIDEO vertical sync signal.
»
Checking the VIDEO
vertical sync signal
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