A) Cd Servo Circuit - Panasonic SA-AK340GCP 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
3 3
C
11
LD
4
4
C
LD GND
12
5 5
GND
6 6
A
1 GND NBOUT 7
8 7
GND
8 8
2 VCC 7
GND
B
9 9
C
VREF
4
10 10
3 BIN NAOUT 6
9
LPD
11 11
10
4 AIN VREF 5 GND
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
14 13
W7027
0
39
37
: +B SIGNAL LINE
: CD-DA SIGNAL LINE
W7025 R7601
0 4.7 C7601 C7670 C7626
6.3V33 0.1 0.1
R7650
5.6 Q7601
C7614 Q7601
B1ADCF000001
6.3V100
LASER POWER DRIVE
C7613 0.1
R7329 1K
R7327
1K
17 18 19 20 21 22 23 24 25 26 27 28
GND
IC7002
BA5948FPE2
4 CH DRIVE
C7352
0.018
GND
1 2 11 10 6 5 4 3 2 1
9 8 7 R7336
10
R7335
100
38
M
C7338 C7315
0.056 0.47
R7323
36
M
3.3K
R7325 330
: CD SIGNAL LINE
W7022 W7020
0 0
W7019
0
16
W7018
C7218
0
0.082
R7212
820
C7241
1000P
R7211
82K
C7244 0.015
C7217 0.1
51(RF)
C7216
680P
53 54
51 52 55
W7014
0
C7203
C7161
6.3V220
0.1
50 ARFFB
C7223
49 ARFOUT
50V4.7 W7015
C7204
48 ARFDC
0.1
0
47 AVDD2
C7102 0.47
50 46 RFIN
45 RFOUT
C7142 3300P
44 RFENV
W7017 C7107 0.022
43 CENV
0
42 LD
41 PD
40 A
W7021 39
C
0
38 B
37 D
36
F
35
E
R7328
W7016
34
10K VREF
0
33
CTRCRS
R7111 10K
32
OSCIN
31
AVSS2
R7349
W7012 W7013
30
18K SRVMON1
0 0
29
SRVMON0
C7154 0.1
28
DVDD1
C7155
0.1
27
IOVDD2
26
DVSS1
25 24 23 22 21
C7339
0.018
R7339 R7330
1K 5.6K
R7315
R7331
3.3K
22K
59
C7227
R7217
50V1
1K
C7225
1000P
C7228 D7650
C7226
R7218
1000P 50V1 MAZ80560ML
1K
24 4
56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
DVDD2 76
77
IOVDD1
DVSS2 78
79
NTEST2
X2 80
X1 81
NTEST 82
D2 83
D1 84
D0 85
IC7001
D3 86
MN6627954MA
D4 87
X7201
SERVO PROCESSOR/
D5 88
DIGITAL SIGNAL PROCESSOR/
DIGITAL FILTER D/A CONVERTER D6 89
D7 90
D15 91 X7201
H2B1695000005
D14 92
DRVDD 93
D13 94
C7264
0.1
D12 95
D11 96
D10 97
D9 98
D8 99
SDRCK 100
20 19 18 17 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
16
C7234 0.1
C7235
16V10
R7332
1K
SA-AK340GCP CD SERVO CIRCUIT
SA-AK340GCP
14
W7006
C7232
0
17 19
6.3V220
W7008 18
0
W7009
0
8
W7010 C7263
9 0
0.1
7
31
LCH OUT
13
17
A.GND
16
RCH OUT
15
+3.3V
14
W7011
D.GND
13
0
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
R7253 10
STAT
4
R7254 1K
/RST
3
C7166 0.01
REST SW
2
LOADING
1
CN7002
R7214
470
3
R7220
1M
W7004
0
W7002
0
W7003
0
W7001
0
2 10
S7201
REST SW
1
11