XG-V10WE (serv.man8). Service Manual text - Page 1-59 - Sharp Projector Service Manual (repair manual). Page 42

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42
XG-V10WE
AN-SD1E/S422E
TROUBLE SHOOTING TABLE 
(Continued)
No or unusual Y signal
Yes
No
Go back to the signal processing 
block.
No
Check IC803 and its peripheral 
circuits.
Yes
No
Check IC804 and its peripheral 
circuits as well as IC806 (AGC).
Yes
Check IC804 and its peripheral 
circuits.
Is there Y signal output at pin (17) of 
IC804?
Is there Y signal output at pin (40) of 
IC803?
Is there Y signal input at pin (21) of 
IC803?
No or unusual horizontal sync
Yes
No
Check IC803 and its peripheral 
circuits.
Yes
No
Is there horizontal sync pulse output 
at pin (9) of IC802?
Check the pulse shaping circuit of 
IC801 and IC802.
Go to "Trouble shooting table for PC 
I/F unit".
Is there horizontal sync pulse output 
at pin (56) of IC803?
No or unusual vertical sync
No
Check IC803 and its peripheral 
circuits.
Yes
Go to "Trouble shooting table for 
PC I/F unit".
Is there vertical sync pulse output at 
pin (4) of IC803?
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