Sharp XV-Z90E Service Manual page 30

XV-Z90E
XV-Z91E
» Formatter Unit Troubleshooting-2/2
No
IC9301 or its peripheral
circuit defective.
6
Is there 60-MHz pulse
signal at TP9025?
30
5
Is the voltage at pin (1)
of the P2002 main PWB
at high level?
No
Is the P2002 connector
properly connected?
Yes
Is the specified voltage
No
applied to the CN1001
connector?
Yes
No
Is the fan running?
Yes
IC2007, IC2002 or their
peripheral circuit
defective.
Check the ballast unit and
power unit.
Check the fan circuit.