Panasonic PV-4601 A - SERVO BLOCK DIAGRAM

SERVO BLOCK DIAGRAM
P3502
4
P3502
1
PIN
4
PIN
1
CAPSTAN
FG HEAD
DD CAPSTAN
MOTOR
DD CYLINDER
MOTOR
P3502
2
PIN
2
P3502
3
PIN
3
P3502
8
PIN
8
P3502
6
PIN
6
HALL
IC
P2502
3
P2502
12
PIN
3
PIN
12
P2502
13
PIN
13
P2502
11
PIN
11
P2502
5
PIN
5
P2502
6
PIN
6
P2502
8
PIN
8
P2502
9
PIN
9
P2502
1
PIN
1
P2502
15
PIN
15
P2503
6
P1541
6
P2503
5
P1541
5
C2610
CYLINDER
MOTOR
DRIVE
PG/FG PULSE
GENERATOR
C2611
VCC
IC2601
16
2
1
17
8
9
7
15
P3501
2
P3501
3
P3001
2
P3001
3
HALL
IC
C2509
19
20
21
22
23
24
HALL
IC
C2510
HALL
IC
C2511
2
5
8
CAPSTAN
MOTOR
DRIVE
DIFFERENTIAL
AMP
POSITION
SIGNAL
PROCESS
VCC
+14V
3
7
4
1
6
3
4
5
2
P2501
7
P6201
7
P2501
9
P6201
9
P2501
11
P6201
11
P2501
5
P6201
5
P2501
17
P6201
17
P2501
18
P6201
18
15
17
11
CONTROL
HEAD
+14V
R6202
R6204
1/2VCC
INTEGRATION
INTEGRATION
INTEGRATION
INTEGRATION
1/2VCC
R6219,C6205
R6206,R6214,R6222
C6201,C6204
58
60
61
D6201
C6209
+-
R6207,R6215,R6218
C6202,C6206
R6209,C6203
(FROM VIDEO CIRCUIT)
V-SYNC
(TO HEAD AMP CIRCUIT)
HEAD AMP SW
(TO HEAD AMP CIRCUIT)
HEAD SW PULSE
(FROM HEAD AMP CIRCUIT)
ENVELOPE DET
(TO VIDEO CIRCUIT)
ROTARY SW
(FROM VIDEO CIRCUIT)
ENVELOPE VOLTAGE
(TO VIDEO CIRCUIT)
V-LOCK PULSE
PG SHIFTER
(HEAD SWITCH POSITION)
R6201
+5V
D6006
R6091
D
R6208
R6216
R6211
R6210
R6212
NEGATIVE PB
CTL SLICER
POSITIVE PB
CTL SLICER
SELECT
SCHMIT
COUNT
DOWN
PG
SELECT
CAPSTAN SPEED
COMPARATOR
CYLINDER SPEED
COMPARATOR
CYLINDER/CAPSTAN
PHASE COMPARATOR
FG
FG/PG
SEPARATOR
PG
H.SW SIGNAL
GENERATOR
ENVELOPE
DETECTOR
V-LOCK
PULSE
GENERATOR
REC CTL
/TR MM
GENERATOR
HEAD AMP
CONTROL
ROTARY
SIGNAL
GENERATOR
HEAD AMP
SELECT
SIGNAL
GENERATOR
SLOW
/STILL
CONTROL
POWER ON(L)
REC CTL
AMP
AMP
PWM
PWM
PWM
PWM
97
98
99
85
22
–1
BY PLACING A JUMPER BETWEEN
TP6003 AND +5V(TP6009),
THE AUTO TRACKING FUNCTION
WILL BE DEFEATED.
TP6003 Å–1
70
71
42
62
63
64
59
24
23
25
26
66
57
76
21
48
41
40
43
PB-ON
+5V
R6205
R6203
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
C
H
E
G
F
FORCED ACCELERATION
H-ROLL ACCELERATION
CAP TORQUE LIMIT
R6223
R6213
CAP
ON
CAP REV(H)/STOP(M)/FWD(L)
TP6205
NOT USED
C6212
D6203
D6202
C6207
75
TP6207
I
C6223
+-
73
67
68
C6218
C6217
C6221
R6229
1/2VCC(2.5V)
+-
+5V
+
-
1/2VCC
IC2502
IC2501
IC6001