Denon DVM-1845/745, Руководство по обслуживанию

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DVM-1845/745
FLOW CHART NO.7
P-ON+5V is not outputted. (P-ON+10V is outputted normally.)
Is the "H" signal 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+10V is outputted normally.)
Is 3.3V voltage supplied to the collector of Q1011?
Replace Q1011, R1066 and R1067.
Check D1008, C1007, C1038, L1007 and
the periphery circuit, and service it if defective.
Yes
No
FLOW CHART NO.9
CHG+5V is not outputted.
Is EV+10V outputted normally?
Check Q1014, D1047 and the periphery circuit,
and service it if defective.
Refer to "FLOW CHART NO.6"
<P-ON+10V (EV+10V) is not outputted.>
Yes
No
FLOW CHART NO.6
P-ON+10V (EV+10V) is not outputted.
Is 10V 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, C1035, C1048, L1009 and
the periphery circuit, and service it if defective.
Check Q1016 and service it if defective.
Yes
Yes
No
No
FLOW CHART NO.10
EV+1.2V is not outputted.
Is 3.3V voltage supplied to Pin(3) of IC1003?
Replace IC1003.
Check D1006, C1014, C1050, L1008, Q1022 and
the periphery circuit, and service it if defective.
Yes
No
FLOW CHART NO.11
EV+3.3V is not outputted.
Is 3.3V voltage supplied to emitter of Q1020?
Is the "L" signal inputted to base of Q1012?
Check Q1012, Q1020, R1050, R1088 and
service it if defective. Replace IC3001.
Check the circuit between Pin(9)
of IC3001 and base of Q1012
and service it if defective.
Check D1008, C1007, C1038, L1007 and
the periphery circuit, and service it if defective.
Is the "L" signal outputted into Pin(9) of IC3001?
Yes
Yes Yes No
No
No