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SERVO BLOCK DIAGRAM
CAPSTAN MOTOR ASS'Y
CAPSTAN
CAPSTAN
MOTOR
MOTOR
COIL
DRIVE
HALL
ELEMENT
POSITION
HALL
SIGNAL
ELEMENT
PROCESS
HALL
ELEMENT
CAPSTAN
FG HEAD
CYLINDER UNIT
P6202
7
PG
P6202
COIL
6
7
P6202
1
P6202
2
P6202
3
P6202
CYLINDER
4
MOTOR
AUDIO CONTROL HEAD UNIT
MAIN C.B.A.
P4092
P4002
5
5
CONTROL
HEAD
P4092
P4002
6
6
PIN
P6201
6
6
PIN
P6201
DIFFERENTIAL
7
7
AMP
PIN
P6201
5
5
PIN
P6201
3
3
IC6201 (CYLINDER MOTOR DRIVE)
15
PG/FG PULSE
18
GENERATOR
16
22
23
CYLINDER
MOTOR
14
DRIVE
25
20
IC6001 (SERVO MICROCONTROLLER)
94
95
PB-ON
V1
4 Vp-p
TP6206
-
+
POSITIVE PB
CTL SLICER
2 V
10 ms
V1
2 Vp-p
AMP
NEGATIVE PB
10 ms
1 V
TP6207
97
CTL SLICER
CAPSTAN DIRECTION CONTROL
74
V1
3 Vp-p
COUNT
TP6203
SCHMIT
DOWN
2 V
1 ms
86
D6201
D6202
87
AMP
TP6201
TP6209
INTEGRATION
76
PWM
CAPSTAN SPEED
COMPENSATOR
MIX
CYLINDER/ CAPSTAN
PHASE COMPENSATOR
MIX
V1
4.80 Vp-p
CYLINDER SPEED
1 V
0.5 ms
COMPENSATOR
PWM
PG/ FG
HEAD SW
90
SEPARATOR
SIGNAL
GENERATOR
CAP TORQUE LIMIT
11
INTEGRATION
77
TP6208
TP6202
71
TP6003
REC CTL
ENVELOPE
(FROM IC3001(83))
AMP
9
DETECTOR
ENVELOPE VOLTAGE
V-LOCK
(TO IC3001(28))
SELECT
PULSE
13
V-LOCK PULSE
GENERATOR
V1
2 V
TP6205
PG
(TO IC3001(80))
SELECT
18
HEAD SW PULSE
REC CTL
/ TR MM
GENERATOR
(FROM IC3001(29))
56
VIDEO
SLOW
/STILL
CONTROL
SERVO BLOCK DIAGRAM
AG-520VDH
5 Vp-p
10 ms
AG-520VDH
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