Marantz DV4400, Service Manual

Page: 24 / 77

1-6-2 E57M2TR
FLOW CHART NO.7
P-ON+5V is not outputted. (EV+9V is outputted normally.)
Is the "H" pulse inputted into the base of Q1004?
Replace Q1004.
Check R1068 and D1046, and service it if defective.
Yes
No
FLOW CHART NO.8
P-ON+3.3V is not outputted. (P-ON+12V is outputted normally.)
Is 3.3V voltage supplied to the collector of Q1011?
Replace Q1011 and R1067.
Check D1008, D1015, C1007, C1038, L1007 and
the periphery circuit, and service it if defective.
Yes
No
FLOW CHART NO.9
EV+5V is not outputted. (EV+9V is outputted normally.)
Is the "H" pulse inputted into the base of Q1014?
Replace Q1014.
Check Q1014, D1047 and the periphery circuit,
and service it if defective.
Yes
No
FLOW CHART NO.6
P-ON+12V is not outputted.
Is 14V 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.
Check D1030, D1048, D1053, C1035, C1048, L1009
and the periphery circuit, and service it if defective.
Check Q1016 and PWRCON line and service it if
defective.
Yes
Yes
No
No
FLOW CHART NO.10
EV+1.5V is not outputted.
Is 2.5V voltage supplied to Pin(1) of IC1002?
Is 1.25V voltage supplied to Pin(4) of IC1002?
Replace IC1002. Replace IC2002.
Check the circuit between Pin(19)
of IC2002 and Pin(4) of IC1002,
and service it if defective.
Check D1006, C1014, C1050, L1008 and the
periphery circuit, and service it if defective.
Is the "L" pulse outputted into Pin(19) of IC2002?
Yes
Yes Yes No
No
No
FLOW CHART NO.11
EV+3.3V is not outputted.
Is 3.3V voltage supplied to emitter of Q1010?
Is the "L" pulse inputted to base of Q1012?
Check Q1010, Q1012, R1087 and R1088, and
service it if defective. Replace IC2002.
Check the circuit between Pin(19)
of IC2002 and base of Q1012,
and service it if defective.
Check D1008, D1015, C1007, C1038, L1007 and
the periphery circuit, and service it if defective.
Is the "L" pulse outputted into Pin(19) of IC2002?
Yes
Yes Yes No
No
No