
10
DVD-S550/DV-S5750
DVD-S550/DV-S5750
■
MAINTENANCE FLOW CHART
Start
A
V Board
Power on
Are voltages
at all pins of connector (Ref 1303)
in AV Board normal ?
Yes
No
No
1. Check Cable
2. Replace power supply unit if AV Board is not shorted,
otherwise find out first where the short is.
Are voltages
at pins of connector (Ref 1104)
in Mono Board
normal ?
Yes
No
1. Check Cable
2. Replace AV Board if Mono Board is not shorted, otherwise
find out first where the short is.
Are voltages
at +8V and +1V8 of power part
normal ?
Is voltage
at +5V VL of power part
normal ?
Yes
No
Yes
No
Check LD1117 (Ref 7101) and peripheral circuit.
Check L7808 (Ref 7301) and LD1117 (Ref 7303) and peripheral
circuit.
Check S12302 (Ref 7306) and peripheral circuit.
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