XG-NV51XE (serv.man11). Trouble shooting table - Sharp Projector Service Manual (repair manual). Page 12

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41
XG-NV51XE/XM/XA
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-2
Checking the PLL circuit and its peripheral circuits
Yes
No
Are there signals at pins (6) and (22) 
of IC8015?
IC8025 or its peripheral circuit faulty.
Yes
No
Is there signal at pins (18) and (19) 
of IC8015?
IC8015 or its peripheral circuit faulty.
Check the video circuit and its 
peripheral circuits.
No
Is image as specified at resolution 
above S-VGA level?
Check the S-VGA video circuit and 
its peripheral circuits. 
Yes
No
Is image as specified at resolution 
below S-VGA level?
Check the VGA video circuit and its 
peripheral circuits. 
Yes
No
Hook up a video system. Is the 
display as specified?
Check the video system's video 
circuit and its peripheral circuits. 
Yes
A
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