Sony DCR-TRV350 Service Manual page 18

COVER
COVER
For Schematic Diagram
• Refer to page 4-67 for printed wiring board.
• Refer to page 4-86, 4-87 for waveforms.
1 2 3 4
VC-305 BOARD (14/20)
A
SERVO(MD DRIVE BLOCK)
XX MARK:NO MOUNT
132
VTR_UNREG
(18/20)
B
EP_13.3V
D_2.8V
133 MT_GND
(19/20)
MT_5V
DRUM_VS
C
CAP_VS
REG_GND
TAPE_LED_ON
TAPE_LED_ON
MODE_SW_A
MODE_SW_A
MODE_SW_B
MODE_SW_B
MODE_SW_C
MODE_SW_C
DEW_AD
DEW_AD
R2402
D
330k
117
R2401
47k
(13/20)
HI8_MP_SW
HI8_MP_SW
ME_SW
ME_SW
C2402
R2404
270 0.1u
XREEL_HALL_ON
E
111
XCC_DOWN
XCC_DOWN
(12/20)
M2000
90
REC_PROOF
MECHANISM
REC_PROOF
LM_-
(10/20)
DECK(2/2)
C2401
0.1u
F
LM_+
CN2401 2P
M
M903 LM(-) 1
C2449
LODING
XX
MOTOR LM(+) 2
C2450
XX
CN2402 10P
DRUM_PG_SENS
PG 1
FG_PG_COM
FG-PG_COM 2
G FP/PG DRUM_FG_SENS
FG 3
DRUM_COM
COM 4
W 5
DRUM_W
W 6
V 7
M901 DRUM_V
DRUM V 8
MOTOR
U 9
DRUM_U
U 10
H
CN2403 22P
VH- 1
WHE-
HW2 2
WHE+
HW1 3
VHE-
HV2 4
VHE+
HV1 5
UHE-
HU2 6
UHE+
HU1 7
I
HE_VCC
VH+ 8
CAP_V 9
CAP_V
MECHANISM
CAP_V 10
BLOCK
CAP_W 11
(CAPSTAN MOTOR)
CAP_W
(PAGE 4-58) CAP_W 12
CAP_U 13
CAP_U
CAP_U 14
REG_GND 15
J FG2
FG2 16
MR_VCC
FG VCC 17
FG1
FG1 18
MODE_SW_C
M-SW(C) 19
MODE_SW_B
M-SW(B) 20
MODE_SW_A
M-SW(A) 21
DEW_AD
DEW 22
K
CN2404 15P
XCC_DOWN
C_LOCK_SW 1
HI8_MP_SW
HI8_MP 2
REC_PROOF
REC_PROOF 3
ME_SW
ME/MP 4
HALL_COM 5
T_RELL_-
T_REEL(-) 6
T_RELL_+
L MECHANISM T_REEL(+) 7
R2403 470
BLOCK
SENSOR_VCC 8
(SENSOR) S_REEL_+
S_REEL(+) 9
(PAGE 4-58)
S_REEL_-
S_REEL(-) 10
REG_GND 11
TAPE_LED(A) 12
TAPE_LED(K) 13
TAPE_END_C
TEPE_END(C) 14
TAPE_TOP_C
TAPE_TOP(C) 15
M
N
05
4-2. SCHEMATIC DIAGRAMS 4-2. SCHEMATIC DIAGRAMS
5 6 7 8 9
NO MARK:REC/PB MODE
R:REC MODE
P:Digital8 PB MODE
C:Hi8/Std8 PB MODE
*:IMPOSSIBLE TO MEASURE THE
VOLTAGE AT THE MARKED POINTS.
CAP_W
CAP_V
CAP_U
FB2401
CAP_ON
C2403
0.001u
50V
RB2401
10k
CAP_FWD 2.9
1 C_FRC
2 TEST
MR_VCC 2.8
3 VMR
CAP_FG 1.4
4 CFGOUT
R2405
5 C_PGND
XX
6 GND
FG1 1.4
7 CFGIN+
FG2 1.4
8 CFGIN-
C2406 0.4
CAGC
1u
9
UHE+ 6.3V 0.7
10 U+
UHE- 0.7
11 U-
VHE+ 0.4
12 V+
VHE- 0.4
13 V-
WHE+ 0.2
14 W+
WHE- 0.2
15 W-
2.9
C2409 16 VCC1
0.01u 0.9
16V 17 VH
HE_VCC 1.3
18 TOPIN
TAPE_TOP R0/P0/C2.9
19 TOPOUT
TAPE_TOP_C 1.3
20 ENDIN
TAPE_END_C
C2407
0.047u
10V
TAPE_END
S_REEL_+
C2415
S_REEL_- 0.01u
SREEL_FG
T_REEL_+
C2418
0.01u
T_REEL_-
TREEL_FG
CAP_ON
CAP_FWD
TAPE_LED_ON
CAP_FG
TAPE_TOP
TAPE_END
SREEL_FG
TREEL_FG
SIGNAL PATH
R2434
4.7
R2431 82
4700
0
C2441 C2442
XX
XX
Drum speed servo
Q2401
2SC5658T2LQ/R
LED DRIVE Drum phase servo
Drum servo(speed and phase)
Capstan speed servo
Capstan servo(speed and phase)
4-35
VC-305 BOARD SIDE A VC-305 BOARD SIDE A VC-305 BOARD SIDE B VC-305 BOARD SIDE B
10 11 12 13 14
C2414 C2416 C2417 C2423 C2428 C2438
C2413 C2422 C2433
0.1u 0.1u 0.1u 0.1u 1u 0.1u 0.1u 0.1u 0.1u
10V 10V
10V 10V 10V 6.3V 10V 10V 10V
C2434 C2439
2.9 0.6
0.001u 0.001u
16V 16V
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
C2431
0.001u
16V
D_PGND 60
40
R1.7/P1.7/C0.9
COM 59
39 R1.7/P1.7/C0.9
WIN 58
R1.7/P1.7/C0.9
VIN 57
R1.7/P1.7/C0.9
UIN 56
0.9
41 DFILTER 55
2.1
DFC 54
1.4
DFGOUT 53
1.3
42 DFGIN 52
1.3
FB2402
VREF 51
IC2401
0.1
PGOUT 50
FB2403
1.3
DRUM/CAPSTAN/LOADING
PGIN 49
MOTOR DRIVE
1
IC2401
PGC 48
TB6550FG(EB)
13.6
VG 47
0.2
43 ISNF 46
R1.1/P1.1/C0.6
DBOUT 45
R1.1/P1.1/C0.6
DBIN 44
0.4
CBLOUT 43
44
0.4
CBOUT 42
0.4
CBIN 41
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
2.9
R2424
0
C2420 C2424
C2425
0.1u 0.01u
XX
10V 16V
C2432
XX
6.3V
REC REC/PB PB
DCR-TRV345E/TRV350/TRV351/TRV355E/TRV356E
15 16 17 18
LM_-
LM_+
DRUM_W
DRUM_V
DRUM_U
DRUM_COM
C2435
0.047u
C2436
10V
50V
470p
DRUM_FG
R2428 10k DRUM_FG_SENS
115
R2433
XX FG_PG_COM
(13/20)
DRUM_PG
DRUM_PG_SENS
C2430
1u
6.3V
C2429
0.022u
16V
C2440
C2437
0.1u 0.1u
16V
16V
134
DRUM_ERROR
CAP_ERROR
(18/20)
UNLOAD
LOAD
DRUM_PWM
CAP_PWM
R2436 R2418
10k
R1.1 15k
/P1.1
/C0
DRUM_8PB
R0
/P0
/C2.9 C2412
C2411
0.01u
0.01u
16V
Q2402
DTC144EMT2L
DRUM Hi8/Std8 MODE SWITCH
116
XCS_IC2401
(13/20)
LM_LIM_DET
CAP_ON
CAP_FWD
CAP_FG
TAPE_TOP
TAPE_END
SREEL_FG
TREEL_FG
135
CAP_FG
(20/20)
39
SPCK
(2/20)
126
XVSP_SCK
VSP_SO
(13/20)
121
XRST_VTR
(13/20)
4-36
VC-305 (14/20)