Marantz BD7003 Service Manual page 25

FLOW CHART NO.6 FLOW CHART NO.6
P-ON+12V is not outputted. P-ON+14.5V is not outputted.
Is 12V voltage supplied to the emitter of Q2603? Is 14V voltage supplied to the emitter of Q2603?
Is the voltage of base on Q2603 lower than the Is the voltage of base on Q2603 lower than the
voltage of emitter on Q2603 when turning the power on? voltage of emitter on Q2603 when turning the power on?
Replace Q2603. Replace Q2603.
FLOW CHART NO.7
FLOW CHART NO.7
P-ON+5V (1) is not outputted. P-ON+5V (1) is not outputted.
Is 5V voltage inputted to the emitter of Q2606? Is 5V voltage inputted to the emitter of Q2606?
Is the voltage of base on Q2606 lower than the Is the voltage of base on Q2606 lower than the
voltage of emitter on Q2606 when turning the power on? voltage of emitter on Q2606 when turning the power on?
Replace Q2606. Replace Q2606.
FLOW CHART NO.8 FLOW CHART NO.8
P-ON+5V (2) is not outputted.
P-ON+5V (2) is not outputted.
Is 5V voltage inputted to the emitter of Q2604? Is 5V voltage inputted to the emitter of Q2604?
Is the voltage of base on Q2604 lower than the Is the voltage of base on Q2604 lower than the
voltage of emitter on Q2604 when turning the power on? voltage of emitter on Q2604 when turning the power on?
Replace Q2604. Replace Q2604.
FLOW CHART NO.9
FLOW CHART NO.9
P-ON+10.5V is not outputted. P-ON+10.5V is not outputted.
Is 13V voltage inputted to the collector of Q2607? Is 14V voltage inputted to the collector of Q2607?
Is 11V voltage inputted to the base of Q2607? Is 11V voltage inputted to the base of Q2607?
Replace Q2607. Replace Q2607.
FLOW CHART NO.10 FLOW CHART NO.10
P-ON+1.2V is not outputted. P-ON+1.2V is not outputted.
Is 2.5V voltage supplied to Pin(1) of IC2601? Is 2.5V voltage supplied to Pin(1) of IC2601?
Replace IC2601. Replace IC2601.
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
No No
Check D1011, D1019, C1017, L1005 and Check D1011, D1019, C1017, L1005 and
their periphery circuit, and service it if defective. their periphery circuit, and service it if defective.
No No
Check Q2601 and PWSW3 line and service it if Check Q2601 and PWSW3 line and service it if
defective. defective.
No No
Check D1013, D1014, D1015, D1021, C1019,
Check D1013, D1014, D1015, C1019, C1025,
C1025, and their periphery, and service it if defective.
and their periphery, and service it if defective.
No No
Check Q2605 and PWSW3 line and service it if Check Q2605 and PWSW3 line and service it if
defective. defective.
No No
Check D1013, D1014, D1015, D1021, C1019,
Check D1013, D1014, D1015, C1019, C1025,
C1025, and their periphery, and service it if defective.
and their periphery, and service it if defective.
No No
Check Q2605 and PWSW3 line and service it if Check Q2605 and PWSW3 line and service it if
defective. defective.
No No
Check D1020, D1023, C1018, C1024, L1003 and Check D1020, D1023, C1018, C1024, L1003 and
their periphery, and service it if defective. their periphery, and service it if defective.
No No
Is 12V voltage inputted to the base of Q2602? Is 14V voltage inputted to the base of Q2602?
Yes Yes
Check Q2602, D2606, Check Q2602, D2606,
and their periphery, and and their periphery, and
service it if defective. service it if defective.
No No
Check D1016, C1020 and the periphery circuit, Check D1016, C1020 and the periphery circuit,
and service it if defective. and service it if defective.
1-8-2
23
1-9-2
No No
Check Q2601, D2613, Check Q2601, D2613,
and PWSW3 line, and and PWSW3 line, and
service it if defective. service it if defective.
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