DV-696AV-S
63
5
6
7
8
5
6
7
8
C
D
F
A
B
E
No.
Symptoms
Diagnosis Contents
Possible Defective Points
4
A tray cannot be opened.
(An opening screen is
displayed on the monitor)
Does the voltage of CP2302-pin 3 and pin 1 on the DVD MT Assy
change normally ?
Pin 5 (SW2(TRIN)): Tray is fully closed: "L"
Pin 3 (SW1(TROUT)): Tray is fully opened: "L"
Tray SW
Is a LOAD-DRV signal reaching ?
DVD MT PCB Assy
DVD IC (IC4002)
Are the signals output from IC2301-pin 5 and pin 6 (CP2302-pin 4 and
pin 5) on the DVD MT Assy ?
Pin 5: Approx. 4.5 V during opening tray approx. 0 V during closing tray.
Pin 4: Approx. 0 V during opening tray approx. 4.5 V during closing tray.
DVD MT PCB Assy
FTS Driver IC (IC2301)
Are wires of CP2302 and CP2303 on the DVD MT Assy disconnected
or damaged ?
Connector / cable
Does the voltage of CP2303-pin 5 change by pressing the Inside
switch.
Inside switch
5
Playback impossible
(no focusing)
Are the signals output from IC2301-pin 9 (F+) and pin 8 (F–) on the
DVD MT Assy ?
DVD MT PCB Assy
FTS Driver IC (IC2301)
Does 650-nm LD emit light ?
Does a pickup lens move up / down ?
Does an actuator spring bend ?
Pickup
Are plastic parts damaged ? Or is a shaft detached ?
Is the turntable detached or tilted ?
Mechanism section (motor)
Is flexible cable of CP2301 on the DVD MT Assy disconnected or
damaged ?
Flexible cable / connector
Is signal output from IC4002-pin 42 (FOSO) on the DVD MT Assy ?
(Device control of about 1.4 V is output usually. It is fluctuated by about
±
250 mV with focus up / down.)
DVD MT PCB Assy
DVD IC (IC4002)
6
Playback impossible
(Spindle does not turn)
Are the signals output from IC2301-pin 13 (MOT SPDL–), and pin 14
(MOT SPDL+) on the DVD MT Assy ?
Is pin 41, 42 (STBY) fixed LOW?
DVD MT PCB Assy
FTS Driver IC (IC2301)
Is there any part detached from the spindle motor ?
Or Is there any foreign object lodged in it ?
Mechanism section
(Spindle motor)
Are wires of CP2303 on the DVD MT Assy disconnected or damaged ? Flexible cable / connector
Is signal output from IC4002-pin 37 (DMSO) on the DVD MT Assy ?
DVD MT PCB Assy
DVD IC (IC4002)
7
Playback impossible
(Playback stops)
Does 650-nm LD deteriorate ?
If the voltage at each both ends of R2321 and R2323 on the DVD MT
Assy is 0.4 V or more, the 650-nm LD is definitely deteriorated.
650-nm LD deteriorated.
(When playback of a DVD is
impossible)
Does 780-nm LD deteriorate ?
If the voltage at each both ends of R2320 and R2322 on the DVD MT
Assy is 0.4 V or more, the 780-nm LD is definitely deteriorated.
780-nm LD deteriorated.
(When playback of a CD is
impossible)
Are there scratches or dirt on the disc ?
Disc
8
Picture disturbance during
playback
(block noise, freeze, other)
Are there scratches or dirt on the disc ?
Is there a problem with the format of the disc ?
Disc
9
No sound
(Picture is normal)
Is signal output from IC8003, 8004, 8005-pin 7 and pin 8 on the DVD
MT Assy ?
DVD MT PCB Assy
Audio DAC IC (IC8003, 8004,
8005)
