A) Cd Servo Circuit - Panasonic SA-AK240E 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
C 3
11 LD
4 4
C W7023
LD GND
12
5 5
0
GND
6 6
A
1 GND NBOUT 7
8 7
GND
8 8
2 VCC GND 7
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
W7022
R7601
4.7 C7601 C7670 C7626
6.3V33 0.1 0.1
W7025 0
R7650
5.6 Q7601
C7614 Q7601
6.3V100 B1ADCF000001
LASER POWER DRIVE
C7613 0.1
W7026 0
W7024 0
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 9 8 7 6 5 4 3 2 1
R7336
10
R7335
100
38
M
C7338 C7315
0.056
R7323
36
M
3.3K
R7325 330
: CD SIGNAL LINE
0 W7020 0
16
W7019
0
C7218
0.082
W7018
R7212
0
820
C7241
1000P
R7211
82K
C7244 0.015
C7217 0.1
51(RF)
C7216
680P
51 52 53 54
W7014
0
C7203
C7161
6.3V220
0.1
50 ARFFB
49 ARFOUT
C7223 50V4.7 W7015 0
48 ARFDC
C7204 0.1
47 AVDD2
0.47
C7102
46 RFIN
50
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
W7016
37 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
C7154 0.1
28
DVDD1
C7155 0.1
27
IOVDD2
26
DVSS1
25 24 23 22
C7339
0.018
R7339 R7330
1K 5.6K
0.47
R7315
R7331
3.3K
22K
59
C7227
R7217
50V1
1K
C7225
1000P
C7228 D7650
C7226
R7218
50V1 MAZ80560ML
1000P
1K
W7005
0
24 4
55 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
NTEST2 79
X2 80
81
X1
82
NTEST
D2 83
84
D1
85
D0
IC7001
D3 86
MN6627954MA
87
D4
SERVO PROCESSOR/
D5 88
DIGITAL SIGNAL PROCESSOR/
DIGITAL FILTER D/A CONVERTER D6 89
D7
90
91
D15
H2B169500005
D14 92
93
DRVDD
D13 94
D12 95
D11 96
D10 97
D9 98
D8 99
SDRCK 100
21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
C7234 0.1
R7332
SA-AK240E/EB/EG CD SERVO CIRCUIT
SA-AK240E / SA-AK240EB / SA-AK240EG
14
C7232
W7006
17 19
0 6.3V220
18
W7008
0
W7009
0
7
8
9
C7263
W7010
0 0.1
31
13
LCH OUT
17
A.GND
16
RCH OUT
15
W7011
+3.3V
14
0
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
R7253 10
STAT
4
R7254 1K
/RST
3
C7166 0.01
REST SW
2
LOADING
1
CN7002
R7214
X7201 470
3
R7220
1M
X7201
W7004
0
C7264
W7002
0.1
0
W7003
0
W7001
0
C7235
16V10
2 10
1K
S7201
REST SW
1
11