Service manual

9-4 FL11.8TR
EV+9V is not output. (PANEL+13V is outputted normally.)
FLOW CHART NO.15
Is approximately
+13V voltage supp
lied to the
collector o
f Q905?
Ye s
No
No
DVD-ON+3.3V is not output.
FLOW CHART NO.14
Is approximately +5V voltage supplied to the
collector of Q904?
Ye s
Check Q904, D906, and their periphery
circuit, and service it if defective.
Check Q905, D901 and their periphery circuit, and
service it if defective.
Check C638, D638 and their periphery circuit, and
service it if defective.
Check C643, D643, D644 and their periphery circuit,
and service it if defective.
Check C640, D640 and their periphery circuit,
and service it if de
fective.
Is approximately +4V voltage supp
lied to Pin(3) of
IC901?
Ye s
No
Check Q901, Q902, DVD-MAIN PWR line and their
periphery circuit, and ser
vice it if defective.
No
EV+1.2V is not output.
FLOW CHART NO.16
Is approximately +5V voltage supp
lied to the
emitter of Q901?
Ye s
Replace IC901.
P-ON+9V is not output. (PANEL+13V is outputted normally.)
FLOW CHART NO.17
Is approximately +
13V voltage supplied to the
collector of Q641?
Is approximately +
10V voltage supplied to the
base of Q641?
No
Ye s
Ye s
Check D666 and
their periphery circuit, and service
it if defective.
Check C643, D643, D644
and their periphery circuit,
and service it if de
fective.
No
Replace Q641.