Pioneer XV-DV282AP Service Manual page 21

5
No. Symptoms
4 A tray cannot be opened.
(An opening screen is
displayed on the monitor)
5 Playback impossible
(no focusing)
6 Playback impossible
(Spindle does not turn)
7 Playback impossible
(Playback stops)
8 Picture disturbance during
playback
(block noise, freeze, other)
9 No sound
(Picture is normal)
5
6
Diagnosis Contents
Does the voltage of CN965-pin 1 and pin 2 on the 09 DVDM Assy
change normally ?
Pin 1 (CLOSE (TRIN)): Tray is fully closed: "L"
Pin 3 (OPEN (TROUT)): Tray is fully opened: "L"
Is the signal input into IC101-pin 1 (TROPEN) on the 09 DVDM Assy?
At open: 3.3 V, At close: 0 V
Are the signals output from CN965-pin 5 and pin 4 on the 09 DVDM Assy ?
Pin 5: Approx. 5 V during opening tray approx. 1 V during closing tray.
Pin 4: Approx. 0 V during opening tray approx. 6 V during closing tray.
Are wires of CN964 and CN965 on the 09 DVDM Assy disconnected or
damaged ?
Does the voltage of CN964-pin 5 on the 09 DVDM Assy change to 0 V
by pressing the Push switch.
Are the signals output from IC101-pin 16 (F+) and pin 15 (F–) on the 09
DVDM Assy ?
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 flexible cable of CN965 on the 09 DVDM Assy disconnected or
damaged ?
Is signal output from IC201-pin 41 (FOSO) on the 09 DVDM Assy ?
(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 IC101-pin 12 (MOT_SPDL–) and pin 11
(MOT_SPDL+) on the 09 DVDM Assy ?
Is pin 21 (STBY) fixed LOW ? (pin 21 is High at playback: 3 V)
Is there any part detached from the spindle motor ?
Or Is there any foreign object lodged in it ?
Are wires of CN964 on the 09 DVDM Assy disconnected or damaged ? Flexible cable / connector
Is signal output from IC201-pin 36 (DMSO) on the 09 DVDM Assy ?
Does 650-nm LD deteriorate ?
If the voltage at each both ends of R322 and R325 on the 09 DVDM
Assy 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 R321 and R326 on the 09 DVDM
Assy 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 video signals.
Composite video signal (IC401-pin 23)
S video signal (IC401-pin 21, pin 26)
RGB video signal (IC401-pin 16, pin 18, pin 20)
Check the waveform (ALCK: IC201-pin 231), (ALRCK: IC201-pin 227),
(ABCK : IC201-pin 230), (ASDATA0/1/2: IC201-pin 226/225/223).
Check the waveform (ASPDIF: IC201-pin 215)
XV-DV282AP
6
7
Possible Defective Points
DVD MECHA Assy
Switch (SW1)
09 DVDM Assy
DVD IC (IC201)
09 DVDM Assy
FTS Driver IC (IC101)
Connector / cable
Push switch (SW2)
09 DVDM Assy
FTS Driver IC (IC101)
Pickup
Mechanism section (motor)
Flexible cable / connector
09 DVDM Assy
DVD IC (IC201)
09 DVDM Assy
FTS Driver IC (IC101)
Mechanism section
(Spindle motor)
09 DVDM Assy
DVD IC (IC201)
650-nm LD deteriorated.
(When playback of a DVD is
impossible)
780-nm LD deteriorated.
(When playback of a CD is
impossible)
Disc
Disc
09 DVDM Assy
DVD IC (IC201)
Video IC (IC401)
09 DVDM Assy
DVD IC (IC201)
7
8
A
B
C
D
E
F
21
8