Troubleshooting; Electrical Trouble Shooting Guide; Power (Dc-Dc Converter) Circuit - Sony DVP-FX700 Service Manual

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9-1. ELECTRICAL TROUBLE SHOOTING GUIDE

1. Power (DC-DC Converter) Circuit

A.
NO POWER ON
by ADAPTOR
Is ADAPTOR
OUT 9.8V?
YES
Is F101 OK?
Is LF101 OK?
Is
D101 OK?
Is F102 OK?
TE
L 13942296513
NO +1.8V
Is Q113 OK?
Replace
Q113
Is Q101 OK?
Replace
Q101
Is Q102 OK?
Replace
Q102
www
Replace IC108
.
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TROUBLESHOOTING

NO
Replace ADAPTOR
Replace F101
Replace LF101
Replace D101
Replac F102
NO +3.3V
NO + 5V
Is Q112 OK ?
Is E+5V OK?
Replace
Q112
Is Q101 OK?
Is Q106 OK?
Replace
Q101
Is Q102 OK?
Replace
Q102
Replace IC104
Is Q107 OK?
Replace
Q107
x
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u163
y
i
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SECTION 9
2 9
8
NO
Replace BATTERY
Replace F901
Replace Q105
Q Q
3
6 7
1 3
1 5
NO -5V
Replace IC170
Replace
Q110
Replace
Q106
co
.
9-1
DVP-FX700
9 4
2 8
NO POWER ON
by BATTERY
Is BATTERY OK?
YES
Is F901 OK?
Is Q105 OK?
0 5
8
2 9
9 4
2 8
NO LCD POWER
Is Q109 OK?
Replace
Q109
Replace L437
m
9 9
9 9

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