Panasonic SJ-MR220, Schematic Diagrams

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IC903
B1MBBDA00002
POWER MOS FET
(MAGNETIC HEAD DRIVE)
2
1
3
4
5
6
7
8
9
10 6
5
4
3
2
1
(RECORDING
HEAD)
B
CN2
4
3
1
2
LIFT MOTOR IC904
B1MBBLA00001
POWER MOS FET
(MAGNETIC HEAD DRIVE)
C
B
A
D912
ZHCS1006T
A
C914
15P
D913
ZHCS1006TA
A
B
C
D
R912
6.8
C915
0.047
A
CN901
CN3
C912 4V10 C913
0.1
S1
TP146
TP148
TP147
8 7 6 5
1 2 3 4
D1 S1 S1 G1
G2 S2 S2 D2
8 7 6 5
1 2 3 4
D1 S1 S1 G1
G2 S2 S2 D2
IC401
C0GBZ0000006
FOCUS/TRACKING COIL,
TRAVERSE MOTOR DRIVE,
SPINDLE MOTOR DRIVE,
ROTARY DETECTOR
C
A
D
B
TRAVERSE
MOTOR
1
3
4
2
CN403
C418 0.33
D
4
2
1
3
SPINDLE
MOTOR
C B A
CN404
C417 0.033
C416 0.033
R412
6.8K
B A C
3
61
60
59
56
47 46 44 43 42 41 39 38
S3 BEM
FU
BEM
FV
BEM
FW
SL
COM
SL
PG2
SL
W
OUT
SL
VM2
SL
V
OUT
SL
PG1
SLU
OUT
SL
VM1
Vcc2 Vcc1 VG C2M
PW IN1
SPU IN
SPV IN
SPW IN
SP COM
RIB
CST
CSL1
CSL2
FG
BRK+
BRK-
AS GND
S GND
S1
S2
IN1R
IN2F
IN2R
ST
ALL
STHB
SP
VM1
SPU
OUT
SP
PG1
NC
SPV
OUT
SPVM2
SPW
OUT
SP
PG2
PW
VM
PW
OUT
PW
PG
C2P
C1M
C1P
EXT CLK
NC
H2 PG2
H2R OUT
H2 VM
H2F OUT
H1F OUT
H1 PG1
IN1F
H1 PG2
H2 PG1
H1R OUT
H1VM
10 11 12 14 15 16 4 5 6 7
30
33 37 36 35 34
32
29
24
23
28
26
25
19
18
17
22
21
20
8
50
49
52
51
62
58
55
54
53
13
45 40
27
9
31
1 2
64
63
57
48
L41
1
C411 4V22
C404
0.1
C
B
A
C412 2200P
C413 2200P
C414 2200P
R411 470
C419 0.1
C420 0.1
C402
0.1
E
F
G
H
I
J
K
L
M
R431
10K
C401
4.7
C415
0.033
A B
R401
47K
TP420
U
V W
U
V W
C B A D
A B C D
C403
1
N
E
A
B
C D
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.
MAIN CIRCUIT
TP145
U
V W
RECORDING HEAD
CIRCUIT
SJ-MR220(EB,EG,GCS,GH) MAIN,RECORDING HEAD SCHEMATIC DIAGRAM
0V 0V 0V 2.2V 0V 0V 0V 0V 0V 1.4V 0.5V
0.4V
0V
0V
0V
0.1V
0V
0.2V
0.8V
0V
1.2V
0V
2.2V
2.2V
2.2V
2.2V
0V 0V 0V
1.5V 1.5V 1.4V 1.5V 1.5V 1.4V 2.2V 2.2V 5.5V 1.2V
4.8V
0.8V
2.9V
0V
1.4V
0V
0V
1.4V
0V
0V
(0V)
(0V)
(0V)
(0V)
(2.2V)
(1.1V)
(2.2V) (2.2V) (0V) (0V) (0V) (0V) (0V)
(1.8V)
(2.2V)
(1.8V)
2.2V
1.5V 0V 0V 0V
0V 0V 0V 1.5V
(0.7V) (0.7V)
0V 0V
0V 0V
(3.1V)
1.5V
1.5V
1.4V
:POSITIVE
VOLTAGE LINE
:RECORDING
SIGNAL
"DIGITAL" LINE
2.2V
(0V)
(2.2V)
(0V)
(1.7V)