XV-Z91E (serv.man10). Troubleshooting table - Sharp Projector Service Manual (repair manual). Page 10

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30
XV-Z90E
» 
Formatter Unit Troubleshooting-2/2
No
IC9301 or its peripheral 
circuit defective.
Is there 60-MHz pulse 
signal at TP9025?
Is the voltage at pin (1) 
of the P2002 main PWB 
at high level?
IC2007, IC2002 or their 
peripheral circuit 
defective.
Is the P2002 connector 
properly connected?
No
Is the specified voltage 
applied to the CN1001
connector?
Yes
Yes
Is the fan running?
Check the ballast unit and 
power unit.
Check the fan circuit.
Yes
No
No
6
5
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