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DVD-S559
No.
Symptoms
4
Playback impossible
(no focusing)
5
Playback impossible
(Spindle does not turn)
6
Playback impossible
(Playback stops)
7
Picture disturbance during
playback (block noise, freeze,
other)
8
No sound (Picture is normal)
14
Diagnosis Contents
Does the voltage of CP2301-pin 5 on the DVD
Mechanism Unit change by pressing the Inside switch
(SW2).
Are the signals output from IC2301-pin 9 (F+) and pin
8 (F-) on the DVD P.C.B. Ass'y ?
Does 650-nm LD emit light ?
Does a pickup lens move up / down ?
Does an actuator spring bend ?
Are plastic parts damaged ? Or is a shaft detached ?
Is the turntable detached or tilted ?
Is cable of CP2301 on the DVD P.C.B Ass'y
disconnected or damaged ?
Is signal output from IC4002-pin 42 (FOSO) on the
DVD P.C.B. Ass'y ? (Device control of about 1.4 V is
output usually. It is fluctuated by about ± 250 mV
with focus up / down.)
Are the signals output from IC2301-pin 10 (MOT
SPDL-), and pin 11 (MOT SPDL+)"
on the DVD P.C.B. Ass'y ?
Is IC2301-pin 33,34 (STBY) on the DVD P.C.B.
Ass'y fixed LOW ?
Is there any part detached from the spindle motor ?
Or Is there any foreign object lodged in it ?
Are wires of CP2303 on the DVD P.C.B. Ass'y
disconnected or damaged ?
Is signal output from IC4002-pin 37 (DMSO) on the
DVD P.C.B. Ass'y ?
Does 650-nm LD deteriorate ?
If the voltage at each both ends of R2303 and R2305
on the DVD Mechanism Unit is 0.4 V or more, the
650-nm LD is definitely deteriorated.
Does 780-nm LD deteriorate ?
If the voltage at each both ends of R2302 and R2304
on the DVD Mechanism Unit is 0.4 V or more, the
780-nm LD is definitely deteriorated.
Are there scratches or dirt on the disc ?
Are there scratches or dirt on the disc ?
Is there a problem with the format of the disc ?
Check the waveform. IC4002-213pin (ALRCK),
214pin (ABCK), 215pin (ACLK), 217pin (ASDATA)
Is signal output from IC8004-pin 7 and pin 8 on the
DVD P.C.B. Ass'y ?
Possible Defective Points
Inside switch (SW2) on the DVD Mechanism Unit.
FTS Driver IC (IC2301) on the DVD P.C.B. Ass'y.
Pickup on the DVD Mechanism Unit.
Mechanism section (motor) on the DVD Mechanism
Unit.
Connector CP2301 on the DVD P.C.B. Ass'y.
Cable (From DVD P.C.B. Ass'y to DVD Mechanism
Unit).
DVD IC (IC4002) on the DVD P.C.B. Ass'y.
FTS Driver IC (IC2301) on the DVD P.C.B. Ass'y.
Mechanism section (Spindle motor) on the DVD
Mechanism Unit.
Connector CP2301 on the DVD P.C.B. Ass'y.
Cable (From DVD P.C.B. Ass'y to DVD Mechanism
Unit).
DVD IC (IC4002) on the DVD P.C.B. Ass'y.
650-nm LD deteriorated. (When playback of a DVD is
impossible)
780-nm LD deteriorated. (When playback of a CD is
impossible)
Disc
Disc
DVD IC (IC4002)
Audio Dac IC (IC8004) on the DVD P.C.B. Ass'y.
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