Sony DVP-FX705 Service Manual ▷ View online
9-4
2. MPEG Circuit
Power is on
Does Logo appear
on the screen?
Does the
moving picture of the DVD Disc
play on the screen
normally?
Is MPEG data signal normal?
Is error signal normal?
Is MPEG data signal normal?
Is Clock normal?
Does the audio
signal output from MPEG
decoder?
Does the
moving picture of the video
CD play on the screen
normally?
Does the audio sound
output normally?
END
Check power & clock.
Check CD/DVD DSP output
signal.
Check MPEG Decoder input
signal.
Check CD/DVD DSP output
signal.
Check MPEG Decoder input
signal.
Check CD/DVD DSP output
signal.
Check MPEG Decoder input
signal.
Check clock signal
Check clock signal
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
OK
OK
OK
OK
NO
NO
NO
NO
NO
OPTION
If included VCD function.
If included VCD function.
9-5
3. Front Circuit(Dogotrpm & Key)
NO
NO
NO
START
Does remote control
work normally?
Do all the
buttons work
normally?
Check waveform of
IC701 Pin 24, 36
Check waveform
of IC701 Pin 3.
POWER
LED ON?
Check waveform
of IC701 Pin 33.
when power S/W turn on,
Is oscillation of X701
normal?
Check SW707
Check waveform
of SW707.
Does pulse
waveform of RC701 Pin 1
appear?
Is IC701
Pin 24 connected to
RC701 Pin1?
Is RC701 Pin 3 5V?
Power on.
Check
R746,R747,R756,R749,R750
R746,R747,R756,R749,R750
and replace
Check the buttons
Solder defective parts
Replace IC701.
Solder Key part.
Check Power.
Replace IC702.
Replace SW707.
Replace RC701.
Re-solder.
Recheck
Replace IC701.
Complete repairing Front B/D.
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
RECHECK
YES
9-6
4. RF/Servo Circuit
A.
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Check the related circuit
on MT1389 RFL signal .
on MT1389 RFL signal .
Laser off
Proper RFL signal
on MT1389?
Proper
DMSO signal on
MT1389
Check DMSO related
circuit on MT1389.
circuit on MT1389.
Check the cable connection
between spindle and main PCBA.
between spindle and main PCBA.
Check the RFL connection
between CON200 and MT1389.
between CON200 and MT1389.
Put disc in?
Disc ID is correct?
Does spindle rotate?
D
9-7
B.
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Focus ON OK?
Track On OK?
Disc is play?
E
Proper
signals on A, B, C,
D of MT1389
Check connections between
MT1389 and pick-up head.
MT1389 and pick-up head.
Proper FO+&FO-signal
on MT1389?
Proper FOSO signal
on MT1389?
Check the related circuit
on MT1389 FO+&FO-sugnal
on MT1389 FO+&FO-sugnal
Check the related
circuit on MT1389
circuit on MT1389
Properly TRSO signal
on MT1389?
TR+&TR-output
properly?
Check the TRSO connection
on MT1389 and motor dirver.
on MT1389 and motor dirver.
Check the tracking control
amp circuit on motor driver.
amp circuit on motor driver.
Check cable connection on
pick-up head.
pick-up head.
Check RF signal waveform.
Check IC501 IC
D
Click on the first or last page to see other DVP-FX705 service manuals if exist.