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8-2
PL12.4ATR
Yes
AL+3.3V is not output. [TYPE A]
FLOW CHART NO.8
Yes
Replace Q701.
Yes
Replace Q702.
No
No
AL+5.3V is not output. [TYPE B]
P-ON+5V is not output.
FLOW CHART NO.7
Is approxi12V voltage supplied to the collector
of Q702?
Is approxi5V voltage supplied to the base of
Q702?
No
Yes
See FLOW CHART NO.6 <P-ON+12V is not output.>
See FLOW CHART NO.6 <P-ON+12V is not output.>
No
Check if there is any leak or short-circuit on the load
circuit. Repair it if defective.
P-ON+12V is not output.
FLOW CHART NO.6
Is approxi12V voltage supplied to the cathode
of D703?
Is approxi12V voltage supplied to the collector
of Q701?
[TYPE A]
Is approxi4V voltage supplied to the base of
Q701?
[TYPE B]
Is approxi6V voltage supplied to the base of
Q701?
No
Yes
Check C710, C711, D703 and their periphery circuit.
Repair it if defective.
Check IC702 and their periphery circuit. Repair it if
defective.
Check if there is any leak or short-circuit on the load
circuit. Repair it if defective.
AMP+24V is not output.
Is approxi24V voltage supplied to the
cathode of D701?
No
Yes
Check C707, C708, D701, D702 and their periphery
circuit. Repair it if defective.
Check D706(D706A), Q703, Q706, P-ON-H1 line
and their periphery circuit. Repair it if defective.
FLOW CHART NO.5