Hitachi DV-P588A Service Manual page 17

FLOW CHART NO.6
P-ON+9V is not outputted.
Is 9V voltage supplied to the emitter of Q1002?
Is the voltage of base on Q1002 lower than the
voltage of emitter on Q1002 when turning the power on?
Replace Q1002.
FLOW CHART NO.7 (DV-P588A(AU) only)
EV+9V is not outputted.
Is 9V voltage supplied to the collector of Q1050?
Is the "H" pulse inputted into the base of Q1050?
Replace Q1050.
FLOW CHART NO.8
P-ON+5V is not outputted. (EV+9V is outputted normally.)
Is the "H" pulse inputted into the base of Q1004?
Replace Q1004.
FLOW CHART NO.9
P-ON+3.3V (EV+3.3V) is not outputted. (P-ON+9V is outputted normally.)
Is 3.3V voltage supplied to the collector of Q1011?
Replace Q1011 and R1067.
FLOW CHART NO.10
EV+5V is not outputted.
Is EV+9V outputted normally?
Check D1047 and the periphery circuit, and
service it if defective.
FLOW CHART NO.11
EV+1.5V is not outputted.
Is approximately 2.5V voltage supplied to Pin(1)
of IC1002?
Replace IC1002.
3-2
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Check D1030, D1048, L1009, C1035, C1048 and
the periphery circuit, and service it if defective.
No
Check Q1016 and PWRCON line and service it if
defective.
No
Check D1030, D1048, L1009, C1035, C1048, R1097
and the periphery circuit, and service it if defective.
No
Check D1072, C1070, R1098 and service it if
defective.
No
Check R1068 and D1046, and service it if defective.
No
Check D1008, D1015, C1007, C1038 and the
periphery circuit, and service it if defective.
No
Refer to "FLOW CHART NO.6"
<EV+9V is not outputted.>
No
Check D1006,C1014,C1050, and their periphery,
and service it if detective.