DCR-TRV270E/TRV280/TRV285E
R:REC MODE
P:PB MODE
*
:IMPOSSIBLE TO MEASURE THE
VOLTAGE AT THE MARKED POINTS.
NO MARK:REC/PB MODE
*
0.6
1.2
0.6
1.2
0.6
2.8
0.2
2.8
2.7
1.4
*
*
0.4
0.6
0.6
0.4
0.4
0.1
0.1
2.8
0.7
1.2
2.8
1.2
2.8
1.2
1.1
*
1.1
1.1
8.2
2.8
0
0
*
1.3
2.7
2.8
0.1
0.6
1.8
1.8
1.8
1.8
0.9
2
1.4
1.3
1.2
0.1
1.2
0.9
13.6
0.1
1.1
1.2
0.4
0.4
0.1
4.5
20
24
23
25
22
21
1.7
1.7
3.4
5
3.4
1.8
0.2
XX
R2405
C2450
XX
C2449
XX
XX
R2431
XX
C2441
XX
C2445
XX
C2443
XX
C2451
XX
C2446
XX
C2444
XX
C2447
XX
C2448
XX
C2425
XX
C2419
XX
C2426
XX
R2439
XX
R2438
XX
R2420
XX
R2435
XX
R2433
XX
R2437
XX
R2441
XX
R2440
XX
R2436
CAP_FG
0.001u
C2434
DRUM_ERROR
0.001u
C2431
CAP_ERROR
0.001u
C2439
2.2
R2422
CAP_PWM
DRUM_VS
DRUM_PWM
MT_5V
EP_13.5V
0.1u
C2413
LM_LIM_DET
TAPE_LED_ON
LOAD
CAP_VS
UNLOAD
2.2
R2421
2.2
R2419
SREEL_FG
0.1u
C2414
TREEL_FG
TAPE_END
REG_GND
VTR_UNREG
REG_GND
D_2.8V
TAPE_TOP
IC2401
TB6550FG(O,EB)
1
C_FRC
2
TEST
3
VMR
4
CFGOUT
5
C_PGND
6
GND
7
CFGIN+
8
CFGIN-
9
CAGC
10
U+
11
U-
12
V+
13
V-
14
W+
15
W-
16
VCC1
17
VH
18
TOPIN
19
TOPOUT
20
ENDIN
21
ENDOUT
22
RLP1
23
RLM1
24
RLO1
25
RLDO1
26
RLP2
27
RLM2
28
RLO2
29
RLDO2
30
VCC2
31
LIMOUT
32
DEC1
33
DEC2
34
XRESET
35
MCK
36
SCK
37
XCS
38
SI
39
DGND
40
CSR
41
CBIN
42
CBOUT
43
CBLOUT
44
DBIN
45
DBOUT
46
ISNF
47
VG
48
PGC
49
PGIN
50
PGOUT
51
VREF
52
DFGIN
53
DFGOUT
54
DFC
55
DFILTER
56
UIN
57
VIN
58
WIN
59
COM
60
D_PGND
61
NC
62
NC
63
D_U
64
D_VS
65
D_V
66
NC
67
D_VS
68
D_W
69
L_OUT1
70
L_VM
71
NC
72
L_OUT2
73
L_PGND
74
C_U
75
C_VS
76
C_V
77
C_VS
78
C_W
79
NC
80
CAPON
CAP_ON
CAP_FWD
DRUM_FG
DRUM_PG
XRST_VTR
XVSP_SCK
VSP_SO
XCS_IC_2401
SPCK
1u
C2406
10P
CN2402
1
PG
2
FG-PG_COM
3
FG
4
COM
5
W
6
W
7
V
8
V
9
U
10
U
22P
CN2403
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
2P
CN2401
1
2
15P
CN2404
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
MODE_SW_A
MODE_SW_B
MODE_SW_C
DEW_AD
XCC_DOWN
ME_SW
REC_PROOF
HI8_MP_SW
XREEL_HALL_ON
RB2401
10k
1
2
3
4
5
6
7
8
FB2401
0.001u
C2403
50V
1
2
3
4
0.047u
C2407
10V
1
2
3
4
0.01u
C2409
16V
1
2
3
4
FB2403
FB2402
UNR32A600LS0
Q2401
0.1u
C2401
0.1u
C2402
270
R2404
470
R2403
82
R2434
0.1u
C2442
0.01u
C2415
0.01u
C2418
0.1u
C2420
1k
R2442
33k
R2423
0
R2424
0.01u
C2424
C2427
2.2u
10k
R2418
0.01u
C2411
0.01u
C2412
0.1u
C2440
0.1u
C2437
470p
C2436
10k
R2428
0.022u
C2429
0.047u
C2435
1u
C2430
0.1u
C2438
0.1u
C2428
0.1u
C2433
1u
C2422
0.1u
C2423
0.1u
C2416
0.1u
C2417
47k
R2401
330k
R2402
M
1
A
0
R2443
MODE_SW_C
MODE_SW_B
MODE_SW_A
DEW_AD
MODE_SW_A
MODE_SW_B
MODE_SW_C
DEW_AD
HI8_MP_SW
REC_PROOF
ME_SW
HI8_MP_SW
REC_PROOF
ME_SW
DRUM_PG_SENS
DRUM_PG
FG_PG_COM
DRUM_FG_SENS
DRUM_FG
DRUM_COM
DRUM_U
DRUM_V
DRUM_W
LM_+
LM_-
CAP_ON
CAP_W
CAP_V
CAP_U
CAP_FWD
MR_VCC
CAP_FG
FG1
FG2
UHE+
HE_VCC
UHE-
VHE+
VHE-
WHE+
WHE-
TAPE_TOP
TAPE_TOP_C
TAPE_END_C
TAPE_END
S_REEL_-
SREEL_FG
T_REEL_-
TREEL_FG
LM_-
LM_+
DRUM_PG_SENS
FG_PG_COM
DRUM_FG_SENS
DRUM_COM
DRUM_W
DRUM_V
DRUM_U
WHE-
WHE+
VHE-
VHE+
UHE-
UHE+
HE_VCC
CAP_U
FG2
MR_VCC
T_REEL_-
S_REEL_-
TAPE_END_C
TAPE_TOP_C
FG1
CAP_W
CAP_V
TREEL_FG
SREEL_FG
TAPE_END
TAPE_TOP
CAP_FG
CAP_FWD
CAP_ON
DRUM_FG
DRUM_PG
FG VCC
VH+
REG_GND
TAPE_TOP(C)
VH-
CAP_W
T_REEL(-)
TEPE_END(C)
HALL_COM
)
DEW
CAP_U
HW2
LM(+)
LM(-)
CAP_V
HV1
FG2
HI8_MP
S_REEL(-)
REC_PROOF
M-SW(B)
ME/MP
HW1
M-SW(A)
CAP_W
HV2
C_LOCK_SW
HU1
FG1
)
SENSOR_VCC
HU2
CAP_V
M-SW(C)
TAPE_LED(A)
REG_GND
TAPE_LED(K)
CAP_U
(MT_GND)
MOTOR
(SENSOR)
DRUM
M903
LOADING
(PAGE 4-33)
MECHANISM
FP/PG
MOTOR
M901
(CAPSTAN MOTOR)
BLOCK
BLOCK
MECHANISM
(PAGE 4-33)
IC2401
LOADING/DRUM/CAPSTAN
MOTOR DRIVE
LED DRIVE
VC-344 BOARD (5/10)
B
E
C
11
15
3
H
14
I
F
9
J
4
2
M
10
D
SERVO (MD DRIVE BLOCK)
5
12
K
G
13
L
16
6
7
8
05
M2000
MECHANISM
DECK(2/2)
XX MARK:NO MOUNT
@33
(9/10)
@34
(6/10)
@36
(6/10)
(7/10)
@35
(6/10)
@40
@05
(1/10)
(2/10)
(6/10)
(6/10)
@38
(9/10)
@37
@18
(2/10)
For Schematic Diagram
• Refer to page 4-43 for printed wiring board.
4-17
4-18
VC-344 (5/10)