21
PD-D6MK2-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
No.
Symptoms
Diagnosis Contents
Possible Defective Points
4
Playback impossible
(no focusing)
Are the signals output from IC101-pin 3 (FOCS_DR
V
) and pin 4
(FOCS_RT
N
) on the D
V
DM Assy ?
DVDM Assy
FTS Driver IC (IC101)
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 C
N
101 on the D
V
DM Assy disconnected or
damaged ?
Flexible cable / connector
Is signal output from IC201-pin 42 (FOSO) on the D
V
DM Assy ?
(Device control of about 1.4
V
is output usually. It is fluctuated by about
250 m
V
with focus up / down.)
DVDM Assy
D
V
D IC (IC201)
5
Playback impossible
(Spindle does not turn)
Are the signals output from IC101-pin 30 (W), pin 33 (
V
) and pin 35 (U)
on the D
V
DM Assy ?
Is pin 26 (STBY) fixed LOW ? (pin 26 is High at playback: 3
V
)
DVDM Assy
FTS Driver IC (IC101)
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 C
N
102 on the D
V
DM Assy disconnected or damaged ?
Flexible cable / connector
Is signal output from IC201-pin 37 (DMSO) on the D
V
DM Assy ?
DVDM Assy
D
V
D IC (IC201)
6
Playback impossible
(Playback stops)
Does 650-nm LD deteriorate ?
If the voltage at each both ends of R322 and R325 on the D
V
DM Assy
is 0.4
V
or more, the 650-nm LD is definitely deteriorated.
650-nm LD deteriorated.
(When playback of a D
V
D is
impossible)
Does 7
8
0-nm LD deteriorate ?
If the voltage at each both ends of R321 and R326 on the D
V
DM Assy
is 0.4
V
or more, the 7
8
0-nm LD is definitely deteriorated.
7
8
0-nm LD deteriorated.
(When playback of a CD is
impossible)
Is there abnormality in FG waveform ? (IC201-pin 47)
DVDM Assy
FG output : FTS Driver IC (IC101)
Are there scratches or dirt on the disc ?
Disc
Addendum
N
o.2
Addendum
N
o.4
Addendum
N
o.3
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