8-3
A0C76TR
PANEL+12.5V is not output.
FLOW CHART NO.11
Is approximately 24V voltage supplied to Pin(2) of
IC502?
No
Yes
Yes
Check D504, D506, C555 and their periphery circuit,
and service it if defective.
Check Q516, Q517, D541, P-ON-H1 line and their
periphery circuit, and service it if defective.
No
Yes
Replace Q507.
Replace IC502.
No
LCD-5.5V is not output.
FLOW CHART NO.12
Is approximately -10V voltage supplied to the anode of
D504?
Is approximately -9V voltage supplied to the base of
Q507?
Yes
Is approximately 2.2V voltage supplied to Pin(7) of
IC502?
No
Check Q516, Q517, D501, P-ON-H1 line and their
periphery circuit, and service it if defective.
PANEL+25.6V is not output.
FLOW CHART NO.10
Yes
No
Is approximately 22V voltage supplied to the emitter
of Q508?
Is approximately 26V voltage outputted to the collector
of Q505?
Yes
Replace Q505.
See FLOW CHART NO.5 <AMP+24V is not output.>
See FLOW CHART NO.5 <AMP+24V is not output.>
No
Check Q512, D510, D523, D536 and their periphery
circuit, and service it if defective.
