XG-XV2E (serv.man2). Service manual part one - Sharp Projector Service Manual (repair manual). Page 47

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47
XG-XV2E/M/A
TROUBLE SHOOTING TABLE 
(Continued)
Lamp does not light up
No
Yes
Replace the lamp. Does the new 
lamp light up?
Lamp was defective. 
Yes
Yes
Yes
No
No
Is voltage of over 200V supplied 
across C1701?
Is F701 blown out?
Yes
No
Is voltage of over 12V supplied 
across C722?
Replace F701, take out JW lead 
and turn on the power. Does the 
LED lights up in green?
Yes
Replace F1701. 
Is F1701 open? 
Q1701 or Q1702 defective. 
Replace it.
No
Check IC2001. 
Yes
Is voltage of over 3V supplied to 
pins (1) thru (4) of EB connector?
Power unit in trouble. Check the 
output pins of EA, EB and EC 
connectors for short-circuit or 
voltage drop.
No
Q1707 or PC1702 defective. 
Replace it.
Yes
Is voltage of over 1V supplied to 
pins (4) thru (7) of CN101?
Q701 defective. Replace it. 
Replace the sub PWB or check its 
internal elements.
No
No
Checking the throughout circuit 
Yes
No
Digital output not acceptable.
Yes
No
Are LCP and monitor interconnected 
with an appropriate  cable?
Use an appropriate cable.
Yes
No
Are LCP and monitor in sync? 
IC3003, IC3004 or IC3005 or their 
peripheral circuits in  trouble.
IC3001 or its peripheral circuits in 
trouble.
Is analog output coming from PC?
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