9-1
SECTION 9
TROUBLESHOOTING
DVP-FX810
9-1. ELECTRICAL TROUBLE SHOOTING GUIDE
No power on
by adaptor
No power on
by battery
Is adaptor
out 9.5V?
YES
NO
Is P1 OK?
Replace P1
Is D2 OK?
NO. P_3V3
NO. +3.3V
NO. +5V
NO. +1.8V
Is Q4 OK?
Replace Q4
Is U6 OK?
Replace U6
Is U5 OK?
Is U1 OK?
Is –AVCC
OK?
Replace U5
NO.
LCD power
Replace U16
Replace U1
Is U3 OK?
Replace U3
Replace U9
Is U9 OK?
Replace D2
Replace adaptor
Is battery OK?
Replace Q1
Is Q1 OK?
Replace battery
AUDIO OUT ABNORMAL
SPEAKER ABNORMAL
Is VR1 OK?
Replace VR1
Replace U20
Replace U10
Replace speaker
Is U20 OK?
Is speaker OK?
Check U17
Check signals from
U10 (MT1389)
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
1. A. Power (DC-DC Converter) circuit
B. Audio out abnormal
C. Speaker abnormal
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TEL 13942296513 QQ 376315150 892498299