A) Cd Servo Circuit - Panasonic SA-AK640PL Service Manual

17.2. (A) CD Servo Circuit

SCHEMATIC DIAGRAM - 1
OPTICAL
CD SERVO CIRCUIT
PICKUP CIRCUIT
LASER DIODE
CP701
6 VCC
1 1
8 F
2 2
E W7025
3 3
C
11
LD
4 4
C W7023
LD GND
12
5 5
0
GND
6 6
A
1 GND NBOUT
8 7 7
GND
8 8
2 VCC GND 7
B
9 9
C
VREF W7026
4
10 10
3 BIN NAOUT 6
9
LPD
11 11
10
5
4 AIN VREF GND W7024
5
12 12
C
T-
13 13
2
T+
14 14
3
F-
15 15
C
F+
16 16
CN7001
C7335
0.1
C7334
10V220
15 16 17
14
13 1
W7027
0
39
M
37
M
: +B SIGNAL LINE : CD-DA SIGNAL LINE
W7022
R7601
4.7 C7601 C7670 C7626
6.3V33 0.1 0.1
0
R7650
5.6
Q7601
C7614 Q7601
6.3V100P
B1ADCF000001
LASER POWER DRIVE
C7613 0.1
0
0
R7329 1K
R7327
1K
18 19 20 21 22 23 24 25 26 27 28
GND
IC7002
BA5948FPE2
4 CH DRIVE
C7352
0.018
GND
2 11 10 9 8 7 6 5 4 3 2 1
R7336
10
R7335
100
38
C7338 C7315
0.056 0.47
R7323
36
3.3K R7331
R7325 330 22K
: CD SIGNAL LINE
0 W7020 0
16
W7019
0
C7218
0.082
W7018
R7212
0
C7241 820
1000P
R7211
82K
C7244 0.015
C7217 0.1
51(RF)
C7216
680P
51 52 53 54 55 56 57 58 59
W7014
0
C7203
C7161
6.3V220P
0.1
50 ARFFB
49 ARFOUT
C7223 50V4.7
W7015 0
48 ARFDC
C7204 0.1
47 AVDD2
0.47
C7102
50 46 RFIN
45 RFOUT
C7142 3300P
44
RFENV
C7107 0.022
43 CENV
W7017 0
42 LD
41
PD
W7021 0
40 A
39 C
38
B
DIGITAL SIGNAL PROCESSOR/
W7016
37 DIGITAL FILTER D/A CONVERTER
D
0
36 F
35
E
34
VREF
R7328 10K
33 CTRCRS
R7111 10K
32
OSCIN
W7012 0 W7013 0
31
AVSS2
R7349
30 SRVMON1
18K
29
SRVMON0
0.1
C7154
28
DVDD1
C7155 0.1
27 IOVDD2
26
DVSS1
25 24 23 22 21 20 19 18 17
C7339
0.018
R7339 R7330
1K
5.6K
R7315
3.3K
59
C7227
17
R7217
50V1
1K
C7225
1000P
C7228 D7650
C7226
R7218
50V1 MAZ80560ML
1000P
1K
W7005
0
W7011
0
24 4
60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
DVDD2 76
77
IOVDD1
DVSS2 78
NTEST2 79
X2 80
R7253 10
X1 81
82 R7254 1K
NTEST
C7166
D2 83 0.01
D1 84
85
D0
IC7001 D3 86
MN6627954MA R7214
D4 87
X7201 470
SERVO PROCESSOR/
88
D5
89 R7220
D6
1M
D7 90
D15 91 X7201
H2B169500005
D14 92
DRVDD 93
D13 94
C7264
0.1
D12 95
D11 96
D10 97
D9 98
D8 99
SDRCK 100
16 15 14 13 12 1 10 9 8 7 6 5 4 3 2 1
C7234 0.1
C7235
16V10
R7332
1K
SA-AK640PL CD SERVO CIRCUIT
SA-AK640PL
14
W7006
19
0
C7232
6.3V220P
18
W7008
0
W7009
0
7
8
9
C7263
W7010
0 0.1
31
13
LCH OUT
17
A.GND
16
RCH OUT
15
+3.3V
14
D.GND
13
LD SW
12
11
+7.5V
10
T O
C7243 W7028 PGND
9 MAIN CIRCUIT
0.1 0
MCLK (CN2801) ON
8
SCHEMATIC
MDATA
7 DIAGRAM-3
MLD
6
BLKCK
5
STAT
4
/RST
3
REST SW
2
LOADING
1
CN7002
3
W7004
0
W7002
0
W7003
0
W7001
0
2 10
S7201
REST SW
1
11