26
PD-D9MK2-K
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2
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4
A
B
C
D
E
F
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2
3
4
5.3 METHOD FOR DIAGNOSING DEGRADATION OF THE LDS ON THE
PICKUP ASSY
DVDM ASSY
B
SIDE A
Front side
R915
R914
R919
R906
R904
L751
R712
Q702
C761
R714
R713
C712
C133
C374
R214
R520
CN101
C215
C104
R207
C213
R134
R136
C161
R154
C143
C142
C141
C144
R135
C146
R132
R133
C152
R153
R152
CN901
C320
C347
R918
R913
R912
R911
R910
D
CN102
C1002
Q801
R801
R736
R751
R711
R907
R750
D881
C801
D801
R737
R761
R731
C751
Q305
C371
R325
C309
CN103
C509
Q506
IC761
R762
C345
Q881
C373
C506
R507
C752
D751
R734
C713
IC501
R502
R313
R508
R901
R903
IC711
R931
R932
R933
R934
R935
R936
R937
R938
R939
R940
R373
R595
R594
IC101
CN953
C505
Q
C508
Q
R505
C502
R506
R504
C503
C145
R314
Q304
R315
L309
L308
R602
R601
R2
0
C101
R131
C131
C310
R151
R310
R321
Q308
R322
R509
C102
C132
C140
C151
C153
C103
Q307
C346
R318
R905
C206
C204
C203
C221
C202
C343
C344
R5
9
UP SIDE
1
24
BOTT
OM SIDE
1
2
GNDD
3.3V
5V
GNDM
6.5V
BOTT
OM SIDE
BO
TT
OM SIDE
8V
3.3V
1
12
5
4
31
4
1
UP SIDE
1
4
5
7
1
9
6
5
64
25
1
C
LD_CD
LD_D
VD
1
3
45
A
D
8
5
4
1
E
1
22
17
1
3.3V
LF
R326R326
R325
R322
R321
Case when this diagnosis is required :
When playback of any disc, including a test disc (DVD: GGV1025, CD: STD-905), won't play or doesn't play
How to diagnose
In the case mentioned above, degradation of the laser diodes (LDs) mounted on the 05SD Pickup Assy is suspected.
Measure the voltage between the two ends of one of the resistors mentioned below.
If the measurements show degradation
of an LD, replace the 05SD Pickup Assy.
Measure the voltage between the both ends of R322 or R325 on the DVDM
Assy. If the voltage is 0.4 V or higher, the 650-nm LD is degraded.
No playback of a DVD (Test Mode), No playback of a SACD :
Measure the voltage between the both ends of R321 or R326 on the DVDM
Assy. If the voltage is 0.4 V or higher, the 780-nm LD is degraded.
No playback of a CD :
05SD PICKUP ASSY
CN101
www. xiaoyu163. com
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TEL 13942296513
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Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299