Read Sony DCR-TRV240E / DCR-TRV340E Service Manual online
DCR-TRV240E/TRV340E
4-57
4-58
DRUM/CAPSTAN DRIVE
VC-276 (15/25)
For Schematic Diagram
• Refer to page 4-79 for printed wiring board.
• Refer to page 4-86 for waveforms.
• Refer to page 4-79 for printed wiring board.
• Refer to page 4-86 for waveforms.
38
1.2
1.8
1.8
0
0.1
0
0
2.8
1.8
1.8
1.8
1.8
1.8
0
R0.4/ P0.6
R0.4/ P0.6
2.7
0.1
0.4
0
0.1
0.3
0.3
2.8
2.7
3.4
2.1
2.8
1.4
3.5
1.3
0.1
1.3
1.3
1.0
0.4
2.7
0.5
1.2
0.1
1.2
0.3
1.3
1.3
0
4.9
8.2
2.8
1.2
1.2
1.2
1.2
0
P0
R2.8/
0
1.2
1.4
1.4
1.4
1.1
1.1
1.4
1.4
1.8
1.8
2.7
2.7
2.8
8.2
1.5
0.8
0.8
0.9
0.7
0.8
2.0
0
4.1
37
35
34
40
39
36
NO MARK:REC/PB MODE
R :REC MODE
P :PB MODE
R :REC MODE
P :PB MODE
TAPE_LED_ON
DRUM_START
DRUM_8PB
CAP_ERROR
4700
R4416
0.1u
B
C4441
470
R4407
D4401
XX
CAP_VS
10k
R4435
2P
CN4401
1
2
0.1u
B
C4412
R4427
10k
HI8_MP_SW
10P
CN4402
1
PG
2
FG-PG_COM
3
FG
4
COM
5
W
6
W
7
V
8
V
9
U
10
U
TREEL_FG
CAP_ON
R4425
3300
DEW_AD
XREEL_HALL_ON
C4432
0.01u
B
VTR_UNREG
A
6.3V
TA
3.3u
C4408
B
0.01u
C4427
B
C4417
0.001u
R4411
82
ME_SW
0.1u
B
C4401
R4401
47k
39k
R4449
R4430
470k
0.47u
F
C4439
C4431
0.1u
B
DRUM_FG
REG_GND
C4430
2.2u
F
TAPE_TOP
D_2.8V
470p
B
C4415
MT_5V
0.1u
B
C4442
15k
R4431
0.1u
B
C4440
LM_LIM_ON
1
R4408
0.022u
B
C4405
MODE_SW_A
CFG_DUTY
2.2
R4451
10k
R4417
C4433
0.001u
B
B
0.001u
C4419
0.01u
B
C4426
CAP_FG
0.1u
B
C4438
TAPE_END
B
0.001u
C4421
33k
R4448
DTC144EHT2L
Q4402
XX
C4407
0.1u
B
C4411
22P
CN4403
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
XDRUM_BRAKE
1
R4410
R4436
4700
220p
B
C4414
LOAD
1
R4409
LB1991V-TLM
IC4402
1
Vcc1
2
Vcc2
3
Vs
4
N.C.
5
Uout
6
Rf
7
Vout
8
Rf
9
Wout
10
VH+
11
VH-
12
ANGLE
13
GND
14
FRC
15
STBY
16
Uin1
17
Uin2
18
Vin1
19
Vin2
20
Win1
21
Win2
22
FGin+
23
FGin-
24
FGout
470p
B
C4418
2.2
R4452
270
R4414
REG_GND
0.022u
B
C4406
DRUM_ON
0.1u
B
C4416
0.1u
B
C4413
10k
R4434
C4428
0.047u
B
DRUM_VS
SREEL_FG
C4429
0.047u
B
0.1u
B
C4403
33k
R4447
C4434
0.001u
B
LM_LIM_DET
CAP_PWM
DRUM_PG
2.2
R4450
DRUM_PWM
1u
B
C4420
R4428
1
R4405
XX
R4426
82k
15P
CN4404
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DRUM_ERROR
UNLOAD
CAP_FWD
0.1u
B
C4409
C4410
0.1u
B
IC4401
CXA8096R-TBM
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
R4429
1
MODE_SW_C
C4424
0.1u
B
REC_PROOF
0.1u
B
C4437
R4432
47k
C4425
0.022u
B
B
C4402
0.1u
R4402
330k
0.1u
B
C4404
MODE_SW_B
R4424
33k
1M
R4453
Q4401
2SC4617HT2L
XCC_DOWN
0.047u
B
C4443
10k
R4461
10k
R4462
100k
R4463
0.01u
B
C4444
0.01u
B
C4445
CAP_FG
T_REEL_EVR
S_REEL_EVR
1
A
DRUM_8PB
UNLOAD
LOAD
LM_LIM_ON
LM_LIM_DET
UNLOAD
LOAD
LM_LIM_ON
LM_LIM_DET
DRUM_PG_SENS
FG_PG_COM
DRUM_FG_SENS
TAPE_TOP_C
T_REEL_-
T_REEL_+
S_REEL_+
S_REEL_-
MODE_SW_A
MODE_SW_B
MODE_SW_C
DRUM_ON
DRUM_START
XDRUM_BRAKE
XDRUM_BRAKE
DRUM_8PB
DRUM_START
DRUM_ON
DRUM_PG
DRUM_FG
CAP_FG
CAP_FWD
CAP_ON
DEW_AD
TAPE_LED_ON
REC_PROOF
DRUM_FG
DRUM_PG
LM_-
LM_+
DRUM_U
DRUM_V
DRUM_COM
DRUM_PG_SENS
FG_PG_COM
DRUM_FG_SENS
DRUM_COM
DRUM_W
DRUM_V
DRUM_U
HI8_MP_SW
REC_PROOF
ME_SW
T_REEL_-
T_REEL_+
S_REEL_-
T_REEL_-
LM_-
LM_+
TAPE_TOP_C
XCC_DOWN
S_REEL_+
S_REEL_-
TAPE_END_C
T
APE_LED_ON
XREEL_HALL_ON
DEW_AD
MODE_SW_B
MODE_SW_C
MODE_SW_A
HW2
HW1
HV2
HV1
HU2
HU1
HU1
HU2
HV1
HV2
HW1
HW2
TAPE_END_C
DRUM_W
XREEL_HALL_ON
XCC_DOWN
HI8_MP_SW
ME_SW
DRUM_PWM
CAP_PWM
CFG_DUTY
DRUM_PWM
CAP_PWM
CFG_DUTY
DRUM_8PB
CAP_FWD
CAP_ON
CAP_FG
CAP_FG
STBY D
RF
OSC
SELSLP1
SELSLP2
VS
CSLP1
CSLP2
VCC1
XBRAKE
FRC
FILTER
FC
RSAT
GND
FGOUT
N.C.
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
VH+
SENSOR_VCC
REC_PROOF
S_REEL(+)
TAPE_LED(K)
HW1
LM(+)
VH-
M-SW(C)
CAP_W
LM(-)
ME/MP
HW2
TAPE_LED(A)
HU1
S_REEL(-)
FG1
M-SW(B)
CAP_U
TAPE_TOP(C)
REG_GND
HU2
M-SW(A)
FG2
HALL_COM
T_REEL(-)
CAP_V
C_LOCK_SW
HV1
DEW
FG VCC
T_REEL(+)
HI8_MP
TAPE_END(C)
REG_GND
HV2
CAP_V
CAP_W
CAP_U
(MT_GND)
95
TO(23/25)
TO(16/25)
96
97
TO(25/25)
TO(5/25,17/25)
64
TO(9/25)
73
IC4401
DRUM MOTOR DRIVE
SWITCH
CAPSTAN MOTOR DRIVE
IC4402
LED DRIVE
92
TO(21/25)
TO(21/25)
93
TO(16/25)
94
MOTOR
FG/PG
MOTOR
(PAGE 4-26)
(PAGE 4-26)
LOADING
DRUM
M
M2000 MECHA
DECK(2/2)
DECK(2/2)
M901
M903
M
H
2
3
12
J
17
9
G
11
E
C
10
K
14
13
6
B
7
I
D
F
15
5
L
8
4
16
XX MARK:NO MOUNT
VC-276 BOARD(15/25)
DRUM CAPSTAN DRIVE(MD BLOCK)
16
Drum speed servo
Drum servo (speed and phase)
Drum phase servo
PB
SIGNAL PATH
REC
REC/PB
Capstan speed servo
Capstan servo (speed and phase)
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