SC-EN25P, SC-EN26P, SC-EN27PC - Panasonic Audio Service Manual (repair manual). Page 21

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12.2. Schematic Diagram
12
11
10
9
8
7
6
5
4
3
2
1
A
B
C
D
E
F
G
H
FOCUS
COIL
TRACKING
COIL
M
M
B
C
D
E
A
A
B
C
D
M702
SPINDLE
MOTOR
M701
TRAVERSE
MOTOR
A
B
D
C
C705
0.1
C704
6.3V330
D
C
B
A
R720
5.6K
R722
56K
C719
3300P
R717
5.6K
R719
68K
C718
2700P
C716
0.033
R712
100
R713
6.8K
R714
22K
R716
3.3K
C717
0.15
R715
1K
C753
6.3V100
IC700
BA5948FPE2
FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE
15
16
17
18
19
20
21
14
13
12
11
10
9
8
23
24
25
26
27
28
6
5
4
3
2
1
VIN3
VIN4
BIAS
Vcc
NC
GND
PVcc2
PGND2
NC
VO4+
VO4-
VO3+
VO3-
VIN2
MUTE2
VIN1
MUTE1
NC
NC
NC
GND
NC
PGND1
PVcc1
VO1-
VO1+
VO2-
VO2+
7
22
NC
NC
R710
100
C756
0.1
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TX
FLAG
MCLK
MDATA
MLD
STAT
BLKCK
NRST
DV
SS
3
X2
X1
IOV
DD
2
DQSY
TXTD
TXTCK
GID0
GID1
GID2
GOUT0
GOUT1
EXT0
EXT1
EXT2
PWMSEL
SPOUT
SPPOL
TR
VP
TR
VM
TR
VP2
TR
VM2
TRP
TRM
FOP
FOM
IOV
DD
3
DV
DD
1
DV
SS
1
ADPVCC
TEIN
FEIN
CEA
RFENV
FEOUT
FEN
TEN
TEOUT
VREF
PD
LD
E
F
D
B
C
A
DCDET
RFV
DD
RESERVE
RFOUT
RF IN
CAGC
ARF
AV
SS
2
ARF
IN
DSLF
IREF
PLLE
PLLF0
AV
DD
2
OUTL
AV
SS
1
A
VREF
AV
DD
1
OUTR
DV
SS
2
IOV
DD
1
DV
DD
2
LON
IOMODE
NTEST
17
10
9
8
7
6
1
2
3
4
5
I
H
C741
1000P
C742
1000P
R738
1K
R737
1K
C743
6.3V330
C747
0.1
CN702
A
B
S700
(REST)
A
C
B
D
A
B
C
C727
0.047
R727
39K
IC701
MN6627953HB
SERVO AMP/SERVO PROCESSOR/
DIGITAL SIGNAL PROCESSOR/
DIGITAL FILTER/
D/A CONVERTER
Rch
OUT
S
TAT
REST
SW
/RST
SQCK
SUBQ
MLD
BLKCK
A.GND
Lch
OUT
11
12
13
14
15
16
D.GND
D
M
D
ATA
E
F
MCLK
F
P
.GND
+5.5V
LD
SW
+3.3V
H
I
16
1
15
14
13
12
11
10
CN701
9
8
7
6
5
4
3
2
16
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
VE
VB
VA
VF
VC
NC
MPD
LD
GND
VREF
Vcc
NC
TR+
TR-
FO+
FO-
1
2
3
4
5
6
7
8
9
10
11
12
LD
MPD
NC
VC
VF
VA
GND
NC
VS
Vcc
VE
VB
A
B
C
D
E
F
G
H
I
A
B
C
D
E
F
G
H
I
OPTICAL PICK-UP
0.22
0.22
A
B
C
D
1
SCHEMATIC DIAGRAM-1
A
CD SERVO CIRCUIT
NOTE:
The number which noted at the connectors on the schematic diagram
as "SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2" indicates
the schematic diagram serial number located on the left corner in the
schematic diagram.
SA-EN25/26/27 CD SERVO CIRCUIT DIAGRAM
To MAIN 
CIRCUIT(CS701) 
C
Q700
2SB0709A0L
LASER POWER
DRIVE
X700
(16.9344MHz)
A
B
C
D
E
F
R705
5.6K
R706
8.2K
R707
8.2K
R708
5.6K
R711
8.2K
R751
0
C
E
B
D
A
C720
6.3V33
R721
4.7
R718
5.6
G
G
E
D
R747
68K
R748
68K
R749
68K
R750
68K
R741
100
C746
22P
C745
22P
R740
1M
C750
0.01
R742
1K
R744
0
C744
220P
C748
220P
C749
220P
R733
5.6
R731
82K
R735
68K
R736
68K
R739
68K
C757
0.1
E
R730
5.6K
R729
5.6K
R728
5.6K
R726
1K
C722
820P
R725
27K
C754
0.039
R723
1K
C726
470P
R724
3.3K
C721
4700P
F
C723
0.1
C724
0.1
C730
820P
C729
0.1
R734
100
C738
6.3V220
C739
0.1
C731
0.022
C732
0.1
C735
6.3V100
C734
0.1
C736
0.082
C733
1000P
R732
820
C
R704
5.6
C709
6.3V100
C707
0.1
VREF
C762
6.3V10
RF
C740
0.01
C751
470P
C752
0.1
R743
1K
2.5V
2.5V
2.5V
2.5V
5.8V
5.8V
1.6V
1.6V
1.6V
3.4V
(0V)
2.5V
2.5V
2.9V
(3.3V)
5.8V
(2.4V)
2.9V
5.8V
1.6V
1.6V
:CD PLAYBACK SIGNAL LINE
:POSITIVE VOLTAGE LINE
5.8V
(2.1V)
1.2V
2.8V
(2.3V)
3.4V
0V
0V
0V
3.5V
1.6V
(0V)3.4V
1.6V
1.6V
1.6V
3.5V
1.5V
1.6V
1.6V
1.6V
1.6V
1.6V
1.6V
1.6V
1.6V
1.6V
1.6V
(3.1V)3.4V
(2.3V)2.8V
(2V)1.7V
(2V)1.7V
1.6V
(2V)1.7V
(2V)1.7V
(2V)1.7V
(1.6V)0.7V
3.4V
(1.4V)0V
(2.1V)1.7V
0V(1.7V)
0V(1.4V)
1.7V(1.6V)
1.7V(1.6V)
0.8V
1V(1.8V)
1V(1.8V)
3.4V
1.5V
3.1V
1.5V
3.5V
1.5V
3.5V
3.5V
3.3V
3.3V(3V)
3.3V
0V(1.6V)
0V
3.3V
1.5V(1.4V)
1.5V(1.4V)
3.5V
0V
0V
0V
0V
SC-EN25P / SC-EN26P / SC-EN27PC
21
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