XG-V10XE (serv.man9). Page 20-59 - Sharp Projector Service Manual (repair manual). Page 35

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54
XG-V10XE
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-8
Yes
Yes
No
No
Checking the SOG circuit
Measure the TL8136 output on 
oscilloscope screen.
Is the composite sync signal 
reproduced in good timing?
Measure the C8069 land on 
oscilloscope screen.
Does the Y signal contain 
sync signal?
SOG sync separation circuit 
defective.
No problem with the SOG 
circuit.
Check the input signal settings.
Input PWB defective.
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