A
B
C
3
2
1
D
E
4
6
5
7
8
6 - 46
6 - 45
SERVO
SERVO
3. SERVO BLOCK DIAGRAM
+B(CYL)
SW
IC551(1/2)
PWM
+B(CYL)
PWM
NOISE
FILTER
CYL.
SPEED
IC901
SYSTEM CONTROL
uP
CAPST
SPEED
NOISE
FILTER
+B(CAPST)
PWM
IC551(1/2)
PWM
+B(CAPST)
SW
REC
CAPST.
PHASE
PB
CAPST.
PHASE
CYL.
PHASE
TBC
CONT.
DIGITAL
uP
EEPROM
IC1105
IC201
VIDEO DSP
IC101
VIDEO HEAD AMP
L211,C234,
C237
L270,C230
Q204
Q111
BUF
Q112
BUF
Q202
BUF
L105,C126
Q113
Q115
IC1104
DATA,
CLOCK,
CS
FM
MOD
Y
FILTER
REC
EQ
CHROMA
FILTER
PB
EQ
FILTER
D/A
PB
EQ
REC
PILOT
PB
PILOT
MR
SENSOR
MOTOR
DRIVE
IC631
CYL. MOTOR
DRIVE
2
V.REF
18
CYL. FG(DFG)
16,17
15
68,75
74
4
22
23
5
7
9
U
V
W
W
V
U
16
17
18
19
20
21
R691-R693,
C691-C693
Q562
10
24
13
PG602
15
11
7
8
6
5
4
3
2
1
W
V
U
3
14
15
90
REC
PB
31
65
60
69
REC Y
REC AUDIO
SW30/25
28
27
CH-1
VIDEO
HEAD
CH-2
VIDEO
HEAD
26
8
PG101
9
5
6
Lo
Hi
115
12
9
3
6
102
119
REC
CHROMA
DATA,
CLOCK,
CS
67
AFT CONT.
43-45
47-49,
52,54
64
67
73
C.REVERSE
C.STANDBY
AMP
AMP
6
12
V.REF
13
29
1
2
15
1
PG603
5
6
4
W
U
V
DRIVE
COIL
CYL.FG
SENSOR
Q561
R694-R696,
C694-C696
CAPST FG(CFG)
ROTOR
POSITION
SENSOR
REVERSE
MOTOR
DRIVE
IC651
CAPST.MOTOR
DRIVE
CYLINDER
CAPSTAN
MOTOR
VCA