17
DVD-1930CI / DVD-757
FLOW CHART NO.7
P-ON+5V is not outputted. (EV+10V is outputted normally.)
Is the "H" signal inputted into the base of Q1004?
Replace Q1004.
Replace Q1014.
Check R1068 and D1046, and service it if defective.
Yes
No
Is the "H" signal inputted into the base of Q1014?
Check D1047, R1069, R1098 and the periphery
circuit, and service it if defective.
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 or R1066 or R1067.
Check D1008, C1007, C1038, L1007, and the
periphery circuit, and service it if defective.
Yes
No
FLOW CHART NO.9
EV+5V is not outputted.
Is EV+10V outputted normally?
Refer to "FLOW CHART NO.6"
<P-ON+10V (EV+10V) is not outputted.>
Yes
Yes
No
FLOW CHART NO.10
Is 2.5V voltage supplied to Pin(3) of IC1002?
Check D1006, C1014, L1008 and the periphery
circuit, and service it if defective.
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, D1048, 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
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