28
DVD-3800BDCI
EV+3.3V(2) is not outputted.
(AL+5V is output normally.)
FLOW CHART NO.11
Is 14V voltage inputted to the emitter of Q2609?
Replace Q2613.
Yes
No
Is 2.6V voltage inputted to the base of Q2613?
Check D1145, R1128, R1129, R1130 and
their periphery, and service it if defective.
No
FLOW CHART NO.12
Check Q2612 and A33-PW-CONT line,
and service it if defective.
FLOW CHART NO.13
Is 3.3V voltage inputted to the emitter of Q2613?
Yes
Yes
Is the voltage of base on Q2609 lower than the
voltage of emitter on Q2609 when turning the power on?
Replace Q2609.
Check Q2604 and PWSW3 line and service it if
defective.
Yes
No
Check D1121, D1127, C1123, L1104 and their
periphery, and service it if defective.
Is -12V voltage inputted to the emitter of Q2600?
Yes
No
No
Is 5V voltage inputted to the emitter of Q2602?
Replace Q2601.
Check PWSW3 line and
service it if defective.
Yes
Is 5V voltage outputted to the collector of Q2602?
Replace Q2602.
Yes
Yes
No
Yes
Check Q2600 and their periphery, and service
it if defective.
No
Check D1124, D1125, C1121, L1102
and their periphery, and service it if defective.
No
No
Check D1112, D1113, D1114, D1129, C1132, C1125
and their periphery, and service it if defective.
P-ON-12V is not outputted.
ls "L" signal outputted to the collector of Q2601?
ls "H" signal inputted to the base of Q2601?
P-ON+15V is not outputted.
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