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— 21 —
— 22 —
SERVO
VC-251 (6/11)
For Schematic Diagram
• Refer to page 7 for printed wiring board.
• Refer to page 7 for printed wiring board.
< Page 4-53, 4-54 >
1.5
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0
0
R0/P0.1
0
0
0
0
2.8
R0/P2.8
1.3
1.3
R0/P2.8
4.8
8.3
R1.9/P1.3
2.1
2.1
2.1
2.1
1.7
1.3
1.3
1.3
1.3
1.1
0.1
2.8
0.3
0.3
0.4
0.4
0.4
0
0.2
2.8
0
0.5
0
R1.3/P1.5
R0.2/P0.3
0.3
R1.2/P1.4
2.1
1.4
4.1
0
36
37
39
40
38
NO MARK:REC/PB MODE
R :REC MODE
P :PB MODE
R :REC MODE
P :PB MODE
C479 2.2u
F
2012
R472
1
R471
1
C480
0.1u
B
1005
C477
0.047u
B
1005
C475
0.022u
B
1005
R468
3300
R469
100k
C474
0.1u
B
1005
R461
180
1608
C481
0.001u
B
1005
C482
0.001u
B
1005
R481
4700
R474
47k
R467
C478 0.047u
B 1005
R466
R455
100k
R452
330k
R451
47k
C473
B
1005
UNLOAD
XLM_LIM_ON
LOAD
LM_LIM_CONT
DRUM_PWM
CAP_PWM
DRUM_ON
CAP_ON
470
R457
470
R464
Q451
1
2
3
4700
R465
C460
0.1u
0.1u
B
1005
1005
B
C452
0.1u
D_2.8V
VTR_UNREG
REG_GND
MT_4.75V
DRUM_VS
CAP_ERROR
DRUM_ERROR
DEW_AD
TAPE_TOP
TAPE_END
MSW_C
MSW_B
MSW_A
REG_GND
DRUM_START
TREEL_FG
SREEL_FG
0.1u
B
1005
C453
1u
B
C470
0.1u
B 1005
C454
1
2012
R458
4700p
B
C465
0.1u
B
1005
C461
470p
B
C468
0.1u
B
1005
C462
0.047u
B
1005
C457
0.1u
B
1005
C463
0.022u
B 1005
C455
220p
B
1608
C464
1
2012
R459
0.1u
B
1005
C459
0.1u
B
1005
C466
0.022u
B 1005
C456
0.1u
B
C451
1005
1
2012
R460
IC451
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
B
C472
B
0.01u
C476
1005
CAP_FG
XREEL_HALL_ON
DRUM_PG
TAPE_LED_ON
DRUM_FG
CFG_DUTY
B
C467
2200p
B
2200p
C471
B
2200p
C469
R470
R480
35V
4.7u
C458
470p
B
C483
470p
B
C484
RB451
1
2
3
4
5
6
7
8
RB452
1
2
3
4
R462
150
1608
XX
D451
XX
B
1608
C485
12P
CN707
1
2
3
4
5
6
7
8
9
10
11
12
15P
CN712
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
D001
8P
CN704
1
2
3
4
5
6
7
8
10P
CN706
1
PG
2
FG-PG_COM
3
FG
4
COM
5
W
6
W
7
V
8
V
9
U
10
U
4
3
21
4
3
21
XREC_PROF_SW
ME_SW
HI8_MP_SW
CAP_FWD
CAP_VS
1
A
XCC_DOWN
UNLOAD
LOAD
XLM_LIM_ON
LM_LIM_CONT
UNLOAD
LOAD
XLM_LIM_ON
LM_LIM_CONT
DRUM_PG_SENS
FG_PG_COM
TAPE_END_C
T_REEL_-
T_REEL_+
S_REEL_+
S_REEL_-
CFG_DUTY
DRUM_ON
DRUM_START
DRUM_START
DRUM_ON
DEW_AD
TAPE_LED_ON
XREEL_HALL_ON
DRUM_FG
DRUM_PG
LM_-
LM_+
T
APE_LED_ON
XREEL_HALL_ON
DRUM_U
DRUM_V
DRUM_W
DRUM_FG_SENS
DRUM_COM
TAPE_TOP_C
MSW_B
MSW_A
MSW_C
MSW_A
MSW_B
MSW_C
LM_-
LM_+
DRUM_PG_SENS
FG_PG_COM
DRUM_FG_SENS
DRUM_COM
DRUM_W
DRUM_V
DRUM_U
CAP_FG
CAP_ON
CAP_ON
CAP_FWD
DEW_AD
T_REEL_+
T_REEL_-
TAPE_END_C
S_REEL_+
S_REEL_-
TAPE_TOP_C
HI8_MP_SW
ME_SW
XREC_PROF_SW
XCC_DOWN
CFG_DUTY
XCC_DOWN
CAP_FG
CAP_FWD
HI8_MP_SW
ME_SW
XREC_PROF_SW
CAP_ON
DRUM_FG
DRUM_PG
CAP_ERROR
DRUM_ERROR
DRUM_ERROR
CAP_VS
CAP_ERROR
CAP_VS
STBY D
RF
OSC
SELSLP1
SELSLP2
VS
CSLP1
CSLP2
VCC1
BRAKE
FRC
FILTER
FC
RSAT
GND
FGOUT
NC
END OUT
END IN
TOP IN
TOP OUT
VM
VCC2
RLDO2
RLO2
RLM2
RLP2
GND
RLP1
RLM1
RLO1
RLDO1
FG IN2
FG IN
VREF
PG IN
PG OUT1
PGC
PG OUT2
CBEN
CBIN
CBOUT
CBLOUT
DBIN
DBOUT
ISNF
N.C
RSB
AGC
COM
U IN
U OUT
V IN
V OUT
W IN
W OUT
DEC2
DEC1
RS
OUT1
RFL
OUT2
LIMEN
LIM OUT
100k
10k
CXA8096R
FP-433
LM(+)
VS
FP-220
IN
FLEXIBLE
IN
DEW
LM(+)
H001
T REEL
SENSOR
T REEL
SENSOR
VS
S001
FG_OUT
REC_PROOF
FLEXIBLE
REG_GND
OFFSET_ADJ
M901
DRUM MOTOR
DRUM MOTOR
SENSOR_VCC
FLEXIBLE
S_REEL(-)
IN
T_REEL(-)
FLEXIBLE
LM(-)
TAPE_LED(K)
IN
VCC_2
TAPE_TOP(C)
OUT
STAND_BY
OUT
TAPE END
HI8_MP
FLEXIBLE
HALL_COM
HI8
MP
MP
MT_GND
OUT
FRC
S002 C LOCK
T_REEL(+)
REG_GND
M-SW(A)
FP-356
FG
TAPE TOP
MT_GND
FLEXIBLE
S_REEL(+)
DEW SENSOR
TEPE_END(C)
H002
S REEL
SENSOR
S REEL
SENSOR
FP-249
VCC_1
ME/MP
REC
PROOF
REC
PROOF
M-SW(C)
TAPE LED
LM(-)
TAPE_LED(A)
M902
CAPSTAN MOTOR
CAPSTAN MOTOR
OUT
M903
LOADING
MOTOR
LOADING
MOTOR
ME/MP
M
COM_GND
PG
S901
MODE SWITCH
MODE SWITCH
C_LOCK_SW
M
M-SW(B)
(B200:NTSC MODEL)
(B201:PAL MODEL)
SIGNAL PATH
Drum servo (speed and phase)
PB
Capstan speed servo
Drum phase servo
REC/PB
Drum speed servo
REC
Capstan servo (speed and phase)
TAPE LED DRIVE
TO(9/11)
24
TO(8/11)
25
TO(7/11,11/11)
26
TO(7/11)
27
SERVO(SB BLOCK)
-REF.NO.:10000 SERIES-
XX MARK:NO MOUNT
XX MARK:NO MOUNT
VC-251 BOARD(6/11)
IC451
DRUM DRIVE
LD DRIVE
REEL FG
DRUM FG/PG
WAVE SHAPER
(MT_GND)
TO(3/11)
35
TO(7/11)
28
41
TO(10/11)
16
10
G
H
5
13
6
E
3
8
B
12
D
C
9
2
4
7
J
I
F
K
11
14
B MECHA DECK(2/2)
FP-355
FP-221
FG
Q002
Q001
2SD2216J-Q
XX
XX
0
15K
0
15K
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