(No.YA683<Rev.001>)1-17
Check if there is any leak or short-circuit on the loaded
circuit, and service it if defective.
INV+22V is not output.
FLOW CHART NO.6
Is approximately 22V voltage supplied to the cathode
of D990?
No
Ye s
Check D990, C902 and their periphery circuit, and
service it defective.
P-ON+5V is not output.
FLOW CHART NO.8
Ye s
Ye s
No
Is approximately 6V voltage supplied to the base of
Q936?
See FLO
W CHART No.7
AL+3.3V is not output.
FLOW CHART NO.7
Ye s
No
Is approximately 8V voltage supplied to the cathode
of D924?
Check D924, C917 and their periphery circuit, and
service it if defective.
Check Q901, D916 and their periphery circuit, and
service it if defective.
Is appro
ximately 8V voltage supplied to the collector
of Q936?
Replace Q936.
No
See FLOW CHART No.9
LCD+24.5V is not output.
FLOW CHART NO.9
Ye s
No
Is approximately 38V voltage supplied to the cathode
of D903?
Is approximately 38V voltage supplied to the collector
of Q911?
Is the voltage of base on Q911 lower than the voltage
of emitter on Q911 when turning the power on?
Ye s
Replace Q911.
Check D903, D908, C903 and their periphery circuit,
and service it if de
fective.
Ye s
Check D923 and
their periphery circuit, and service it
if defective.
No
Check Q912 and
P-ON-H1 line, and service it if
defective.
No
To Next Page
Loading...
Need help?
General
