Schematic Diagram; A) Cd Servo Circuit - Panasonic SA-AK250GCP Service Manual

19 Schematic Diagram

19.1. (A) CD Servo Circuit

1 2 3
SCHEMATIC DIAGRAM - 1
A
CD SERVO CIRCUIT
OPTICAL PICKUP CIRCUIT
(FOR REFERENCE ONLY)
CN7001
LASER DIODE
6
1 VCC 1
8
B 2 F 2
3 E 3
11 C
4 LD 4
C
12
5 LD GND 5
6 GND 6
7 A 7
8 GND (GUARD) 8
1 GND
NBOUT 8
9 B 9
10 VREF 10
2 VCC GND 7
11 LPD 11
C
12 GND (GUARD) 12
4
3 BIN NAOUT 6
9 13 T- 13
14 T+ 14
C
10
5
4 AIN VREF
5
15 F- 15
C
16 F+ 16
2
3
C
D
E
15 16
F C7335
0.1
C7334
10V220
14 13
62 39
G 62
62
+
M7301
TRAVERSE MOTOR
H
1 2 3
4 5 6
: + B SIGNAL LINE
W7022 0 W7020 0
R7601
C7601 C7670 C7626
4.7 6.3V33 0.1 0.1
Q7601
B1ADCF000001
W7025
0
LASER POWER DRIVE W7017
0
R7650 5.6 C7614
6.3V100
W7023
0
C7613
0.1
W7026
0
28
62
VREF
W7024
0
90
62
GND1
R7327
1k
TRV GAIN
R7336
10
C7352
0.018
FO GAIN
17 18 19 20 21 30 22 23 24 25 26 27 28
GND
IC7002
BA5948FPE2
4 CH DRIVE IC
C7338
GND
12 11 10 9 8 29 7 6 5 4 3 2 1
R7323
R7325
R7335
38 100
37 62 36
+
M7302
SPINDLE MOTOR
4 5 6
7 8 9
: CD DA SIGNAL LINE : CD SIGNAL LINE
W7019 0 W7018 0
C7218
0.082
62 51
R7221
(RF) 100
C7241
1000P
W7014
C7231
0 R7212
820 6.3V220
C7217
0.1
W7005
0
R7211
C7230
82k
0.1
24
62
C7244
0.015
C7223
W7012
C7216
50V4.7
0
680P
C7203
C7161
6.3V220 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66
0.1
50
W7015
49
0
C7204
48 ARFDC
0.1
C7102
47 AVDD2
[50] ARFFB
0.47
[49] ARFOUT
46 RFIN
C7142
50 45 RFOUT
3300P 62
44 RFENV
C7107
43 CENV
0.022
42 LD
41 PD
IC7001
40 A
MN6627954MA
39 C
SERVO PROCESSOR/
38 B
DIGITAL SIGNAL PROCESSOR/
37 D DIGITAL FILTER D/A CONVERTER
36 F
35 E
34 VREF
R7111
33 CTRCRS
10k
32 OSCIN
31 AVSS2
R7349
30 SRVMON1
18k 62 88
[26] DVSS1
89 29 SRVMON0
62
C7154 0.1
28 DVDD1
C7155 0.1
27 IODD2
R7329
1k 26
R7328 10k
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
R7330
5.6K
C7315
0.47
0.056
R7331
22k
3.3k
R7315
330 3.3k
R7332
1k
7 8 9
65
10 11
62 14
R7217
1k
C7225
1000P
C7226
1000P
R7218 1k
62 13
W7010
C7263
0.1 0
67 68 69 70 71 72 73 74 75 C7234
0.1
W7009
76
0
C7235
77
16V10
DVSS2 78 W7008
0
REGON 79
DVDD2 [76]
IODD1 [77]
X2 80
W7006
X1 81 0
NTEST 82
D2 83
D1 84
D0 85
D3 86
D4 87 C7233 C7232
0.1
6.3V220
D5 88
62 7
D6 89
62 8
D7 90
9
62
D15 91
31
62
D14 92
DRVDD 93
4 R7254
R7253 62
D13 94
1K
10
D12 95
D11 96
C7166
SDRCK [100]
W7003 W7001
0.01
D10 97
0 0
D9 98
D8 99
100
9 8 7 6 5 4 3 2 1
W7002 W7004
0 0
1
X7201
H2B169500005
10 11
SA-AK250GCP
12 13 14
A
D7650
MAZ80560ML
62 16
19
62
B
18
62 C7227
50V1
C7228
17
62
50V1
C
LB7262-LB7264
D0GBR00JA008
CN7002
22
AGND
21 LCH OUT
20 AGND
19
RCH OUT
C7253
18 DGND
D
470P
W7029
17 ST_IN
0
16
ST_CLK
W7007
15 ST_REQ
0
14 3.3V
TO
12 13
62 DGND
MAIN CIRCUIT
12 LD SW
(CN2801) IN
11 TX
SCHEMATIC
W7028 C7243
10
7.5V DIAGRAM - 4
0 0.1
9 PGND
8 MCLK
7
MDATA
6 MLD
E
5 BLKCK
4 STAT
3 3 RST
62
2 RESET_SW
1 LOADING
62 1
S7201
REST SW
62 2
R7220
1M
F
3
2
11
62
10
62
G
SA-AK250GCP CD SERVO CIRCUIT
H
12 13 14