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DVP 721VR
Service manual
Electrical Troubleshooting Guide; Power(Smps) Circuit - Philips DVP721VR Service Manual
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Also See for DVP721VR
:
Specifications
(2 pages)
,
User manual
(41 pages)
,
Owner's manual
(40 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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ELECTRICAL TROUBLESHOOTING GUIDE
1. Power(SMPS) CIRCUIT
NO 5.3VA.
YES
Is the F101 normal?
YES
Is the BD101
normal?
YES
Is the R101
normal?
YES
Is Vcc (9V - 18V)
supplied to IC101 Pin2?
YES
Is the D118 normal?
YES
Is there about 2.5V
at the IC103 Vref?
YES
Is the D111 normal?
YES
Is the D110
normal?
YES
Is the D106
normal?
YES
NO
Replace the F101.
(Use the same Fuse)
NO
Replace the
BD101.
NO
Replace the R101.
NO
Is the D102
normal?
NO
Check or Replace
the D102.
NO
Replace the D118.
NO
Replace the IC103.
NO
Replace the D111
NO
Replace the D110
NO
Replace the D106
YES
Is the D113
normal?
YES
Is the D108
normal?
YES
Is the D107
normal?
YES
Power Line of Main
PCB is short
NO 5.0V.
YES
Is the Vcc(5.3V) sup-
plied to Q150 Emittor?
YES
Is the Q162 Base
"H"?
YES
Check or Replace
the Q150.
3-4
NO
Replace the D113.
NO
Replace the D108.
NO
Replace the D107.
NO
Check or Replace
the D118
NO
Check the PWR CTL"H"
signal from µ-com
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Chapters
Section 1 Summary
3
Section 3 Electrical
11
Table of Contents
Troubleshooting
ELECTRICAL TROUBLESHOOTING GUIDE
14
DVD PART
48
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This manual is also suitable for:
Dvp721vr/02
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