25
DV-510K-S
5
6
7
8
5
6
7
8
A
B
C
D
E
F
5.2 METHOD FOR DIAGNOSING DEGRADATION OF THE LDS ON THE PICKUP ASSY
1
33
65
97
X4001
J7302
Q
8
014
Q
8
019
Q
8
020
Q
8
021
Q
8
005
R
8
057
R
8
069
R
8
066
R
8
061
R
8
049
R
8
04
8
R
8
063
R
8
067
R
8
056
R
8
073
R
8
0
8
2
R
8
074
R
8
077
R
8
0
8
1
R
8
07
8
R
8
0
8
0
R
8
079
R
8
0
8
3
R
8
0
8
5
R
8
037
R
8
0
8
4
R
8
039
R
8
040
R
8
03
8
R
8
035
R
8
036
C
8
066
C
8
073
C
8
070
W
8
40
C
8
042
C
8
056
C
8
057
C
8
05
8
C
8
067
C
8
069
C
8
072
C
8
077
C
8
07
8
J
8
001
CP7301
C7
3
1
6
C7
3
1
7
C7
3
1
8
C7
3
1
9
R7
3
1
9
R
7320
R
7321
B
7304
B7305
B4002
B
8
004
C
8
036
CP
8
003
R7
3
0
2
IC4003
IC
7301
R4059
R4060
R4061
R4062
C
7311
R
7307 C7305
C7306
C7307
C730
8
D7306
D7305
R7301
IC
8
003
J
8
003
R4035
C7
3
0
3
C
8
051
C
8
053
Q
8
01
8
Q
8
013
C7309
C7310
R7305
D7
3
1
2
D7
3
1
0
D7
3
1
1
C
8
03
8
L7301
Q4
0
0
1
C7315
IC7302
Q
7302
IC4001
R2
3
1
6
W
8
05
W
8
06
C2307
C2
3
1
2
C
2311
R2
3
1
0
W
8
02
R2
3
1
3
R2
3
1
2
R
2327
R
231
8
R
2317
R2
3
2
5
C
2306
IC2301
R4011
C
4116
C4112
IC4006
C4
1
0
0
C4099
C409
8
C4096
C4
0
9
5
B
4001
R4
0
1
3
C2
3
0
1
C
P
23
02
C2
3
2
1
C2
3
2
0
R4
0
1
2
R2309
R2306
R2307
R2
3
2
8
R2319
Q2
3
0
3
Q2304
Q2301
Q2
3
0
5
Q2302
C
4052
IC4005
R
4066
C4049
N
R
4002
R4
0
2
7
C
4050
C
P
230
3
CP4003
IC4009
C4
1
3
7
C
4141
R4063
R4
0
7
3
R4072
C4
0
9
1
C
4104
IC4004
R4
0
4
0
R4
0
4
4
W
8
10
R4053
R4054
C4
0
7
8
R
4033
B4
0
0
8
C
4029
C4002
R4
0
3
9
W
8
0
8
R4024
R4
0
2
5
C
4
090
C40
8
9
R4
0
1
4
R4015 R4016
B4007
W
8
29
R4
0
1
8
R4
0
1
9
C4
0
0
6
R4031
C4
0
3
9
C4
0
4
4
L4001
C4
1
4
2
C4134
W
8
44
W
8
09
D4003
W
8
1
8
W
8
32
W
8
39
C4
0
8
0
CP
23
01
W
8
26
R4
0
0
8
C
4010
C2303
W
8
16
W
8
17
R4
0
6
7
C4
1
2
0
C4
1
1
9
C4072
C4012
NR2301
R
4074
C
2304
C
4047
C4
0
4
6
C2
3
0
2
R2
3
4
4
C
2323
C
8
059
R730
8
R7306
C7
3
1
2
R
8
059
R
8
060
C7
3
0
4
C7
3
1
3
C4
0
5
6
R
8
076
R
8
051
R
8
014
C2
3
2
2
R2
3
4
2
C4
0
8
6
R4022
C4011
C
4062
C4
1
0
1
C4102
C4
0
0
5
C4007
C4140
C4
0
7
7
R4
0
0
2
C2305
R
2311
R4017
R2
3
0
8
C4
0
88
C4
0
4
8
C4
0
5
1
R4
0
4
6
C
P
4
0
0
2
C4
1
3
2
C
P
4004
Q7
3
0
1
D4
0
0
2
R4
0
4
5
R
2326
R
7316
R7315
R731
8
R7317
Q7305
B7
3
0
1
R4
0
5
8
W
8
20
R
4075
DMG099A
X4001
R2
3
1
6
W
8
05
W
8
06
C2307
C2
3
1
2
C2
3
1
1
R2
3
1
0
W
8
02
R2
3
1
3
R2
3
1
2
R
2327
R2
3
1
8
R
2317
R2
3
2
5
C
2306
IC2301
C
4116
C4
0
9
5
C2
3
0
1
C
P
230
2
C2
3
2
1
C2
3
2
0
R2309
R2306
R2307
R2
3
2
8
R2319
Q2
3
0
3
Q2304
Q2301
Q2
3
0
5
Q2302
C
P
23
03
IC4009
C4
1
3
7
C4
1
4
1
C4
0
7
8
C4
0
9
0
C40
8
9
R4
0
1
4
R4015 R4016
W
8
29
R4
0
1
8
R4
0
1
9
R4031
W
8
32
W
8
39
23
01
03
NR2301
C
2
304
C2
3
0
2
R2
3
4
4
C2
3
2
3
5
6
C2
3
2
2
R2
3
4
2
C4
1
0
1
C4102
C4
0
0
5
C4007
C4140
C
R4
0
0
2
C2305
R
2311
R4017
R2
3
0
8
R2
3
2
6
Case when this dia
g
nosis is re
q
uired :
W
hen playback of any disc, including a test disc (D
V
D: GG
V
1025, CD: STD-905), cannot be performed
[1] How to dia
g
nose
In the case mentioned above, degradation of the laser diodes (LDs) mounted on the PICKUP Assy is suspected.
Measure the voltage between the two ends of one of the resistors mentioned below.
Measure the voltage between the two ends of
N
R2301 on the D
V
D MT PCB Assy.
If the voltage is 0.17
V
or higher, the 650-nm LD is degraded.
No playback of a DVD :
Measure the voltage between the two ends of
N
R2301 on the D
V
D MT PCB Assy.
If the voltage is 0.20
V
or higher, the 7
8
0-nm LD is degraded.
No playback of a CD :
If the measurements show degradation
of an LD, replace the PICKUP Assy.
D
V
D MT PCB ASSY
SIDE A