Sony CCD-TRV128 Service Manual page 33

CCD-TRV128/TRV228/TRV228E/TRV328/TRV428/TRV428E
For Schematic Diagram
• Refer to page 4-43 for printed wiring board.
1 2
VC-341 BOARD (5/10)
A
SERVO (SB BLOCK)
XX MARK:NO MOUNT
NO MARK:REC/PB MODE
R:REC MODE
P:PB MODE
∗
:IMPOSSIBLE TO MEASURE THE
VOLTAGE AT THE MARKED POINTS.
B
43
(6/10)
C
M2100
/M2101
MECHANISM
DECK (2/2)
44
D
M2100: TRV128
/TRV228
(7/10)
/TRV328
/TRV428
M2101: TRV228E
/TRV428E
CN401 2P
M
M903
LM(-)
LOADING
MOTOR
LM(+)
CN402 10P
E
PG
FG-PG_COM
FP/PG
FG
COM
W
W
V
M901
DRUM V
F
MOTOR
U
U
CN403 22P
VH-
HW2
G HW1
HV2
HV1
HU2
HU1
VH+
CAP_V
MECHANISM
CAP_V
BLOCK
CAP_W
H
(CAPSTAN MOTOR)
(PAGE 4-33) CAP_W
CAP_U
CAP_U
REG_GND
FG2
FG VCC
FG1
I
M-SW(C)
M-SW(B)
M-SW(A)
DEW
J
CN404 15P
C_LOCK_SW
HI8_MP
REC_PROOF
ME/MP
HALL_COM
T_REEL(-)
T_REEL(+)
MECHANISM
K
SENSOR_VCC
BLOCK
(SENSOR) S_REEL(+)
(PAGE 4-33)
S_REEL(-)
REG_GND
TAPE_LED(A)
TAPE_LED(K)
TEPE_END(C)
TAPE_TOP(C)
L
05
VC-341 (5/10)
4-2. SCHEMATIC DIAGRAMS 4-2. SCHEMATIC DIAGRAMS
3 4 5 6
EP_13.5V
REG_GND
D_2.8V
52
REG_GND (MT_GND)
VTR_UNREG
(9/10)
MT_5V
DRUM_VS
CAP_VS
MODE_SW_A
MODE_SW_A
MODE_SW_B
MODE_SW_B
MODE_SW_C
MODE_SW_C
DEW_AD
DEW_AD
CAP_W
R402
330k
CAP_V
CAP_U
CAP_ON
R401
47k
HI8_MP_SW
HI8_MP_SW
REC_PROOF C404
REC_PROOF
0.1u
ME_SW
ME_SW
XCC_DOWN
XCC_DOWN
CAP_FWD
C401
0.1u LM_- MR_VCC
CAP_FG
1
LM_+
2
R406
C402 C403 XX
XX XX
FG1
DRUM_PG_SENS FG2
1
FG_PG_COM
C410
2
DRUM_FG_SENS UHE+
3
DRUM_COM UHE-
4
VHE+
5
DRUM_W VHE-
6
WHE+
7
DRUM_V WHE-
8
9
DRUM_U
10
HE_VCC
TAPE_TOP
TAPE_TOP_C
TAPE_END_C
1
WHE-
2
WHE+
TAPE_END
3
VHE-
4
VHE+
5
UHE-
6
S_REEL_+
UHE+
7
HE_VCC
8 S_REEL_-
9 SREEL_FG
CAP_V
10 T_REEL_+
11
CAP_W T_REEL_-
12
TREEL_FG
13
CAP_U
14
15
FG2
16
MR_VCC
17
FG1
18
MODE_SW_C
19
MODE_SW_B
20
MODE_SW_A
21
DEW_AD
22
XCC_DOWN
15
HI8_MP_SW
14
REC_PROOF
13
ME_SW
R404
12
270
11
T_REEL_-
10
T_REEL_+
9
R403 470
R409
8
82
S_REEL_+
7
S_REEL_-
6
5
4
3
TAPE_END_C 4.4
2
TAPE_TOP_C 0
1
Q401
UNR32A600LS0 C405 C406
XX 0.1u
LED DRIVE
4-17
VC-341 BOARD SIDE A VC-341 BOARD SIDE A
7 8 9 10
C415 C420
C413 C417
0.1u
0.1u 0.1u 0.1u
R428
XX
R429 XX
R407 XX
R411
2.2
R408 XX
R410
R412
2.2
2.2
FB401 2.8 1 1
80 79 78 77 76 75 74 73 72 71 70
C407
0.001u RB401
50V 10k
2.8 wd
IC401 4 REC/PB
C_FRC
TEST
2.8
VMR
1.4
CFGOUT
C_PGND NTSC: 820 Hz
PAL: 1148 Hz
GND
1.4
CFGIN+
R0/P1.4
CFGIN-
0.4
CAGC
1u
0.6
IC401
U+
0.6
U-
DRUM/CAPSTAN/LOADING
0.4
V+ MOTOR DRIVE
IC401
0.4
V- TB6550FG(O,EB)
0.2
W+
0.2
W-
wh
IC401 t; REC/PB
2.8
VCC1
0.7
VH
1.3
TOPIN
2.8
TOPOUT
NTSC: 33.3 msec
1.3
ENDIN
PAL: 40 msec
C409
0.047u
10V
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
∗ ∗
2.8
C411
0.01u
C412
0.01u
C423
0.1u
DRUM_FG
DRUM_FG
DRUM_PG
DRUM_PG
TAPE_TOP
TAPE_TOP
TAPE_END
TAPE_END
SREEL_FG
SREEL_FG 45
TREEL_FG
TREEL_FG
CAP_FWD (6/10)
CAP_FWD
CAP_FG
CAP_FG
CAP_ON
CAP_ON
XREEL_HALL_ON
SIGNAL PATH
TAPE_LED_ON
91
CAP_FG
Drum speed servo
(10/10)
Drum phase servo
Drum servo(speed and phase)
R405
0
Capstan speed servo
Capstan servo(speed and phase)
VC-341 BOARD SIDE B VC-341 BOARD SIDE B
11 12 13 14
C424 C425 C439
1u 0.1u
0.1u
C432 C436
0.1u 0.1u
wf
IC401 yd,yg,yk REC/PB
NTSC: 180 Hz
0 0.8
PAL: 150 Hz
69 68 67 66 65 64 63 62 61
C434 C437
0.001u 0.001u
wg
IC401 td REC/PB
D_PGND
0.8
COM
0.8
2.8 Vp-p WIN
0.8
VIN
NTSC: 180 Hz
0.8
PAL: 150 Hz
UIN
0.8 C431
DFILTER 0.047u
2.1
C435
DFC
2.2u
1.4
DFGOUT
R424
1.3
DFGIN
1.3 R430 XX R416 C442
VREF
XX 470p
0.1
PGOUT
1.3
PGIN
0.9
R431
PGC
0
C429 1u
13.6
VG
0.1 C430 0.022u
C441
ISNF
1u
0.6
DBOUT
0.6
DBIN
2.8 Vp-p
0.3
CBLOUT
0.3
CBOUT
0.3
CBIN
0 0 0.5
TRV228E/TRV428E
R413
C427 R426
C446 C426 4700p 15k
XX 0.01u
wj IC401 rf REC/PB wk IC401 ra REC/PB
80 mVp-p 70 mVp-p
13 sec 13 sec
REC REC/PB PB
4-18
15 16 17
LM_-
LM_+
DRUM_W
DRUM_V
DRUM_U
1.4 Vp-p
DRUM_COM
2.8 Vp-p
DRUM_FG
10k
DRUM_FG_SENS
FG_PG_COM
DRUM_PG
DRUM_PG_SENS
C443 R425
XX
0.1u
R418
XX
46
DRUM_ERROR
CAP_ERROR
(9/10)
R423
XX
C440
XX
12
CL
(1/10)
UNLOAD
47
LOAD
XCS_IC-401
(6/10)
DRUM_PWM
CAP_PWM
R427
C445
0.01u
R414 C444
0.01u 48
VC_SO
XVC_SCK (6/10)
R413,R427
0 :TRV128/TRV228/TRV328/TRV428
10k :TRV228E/TRV428E
R414
15k :TRV128/TRV228/TRV328/TRV428
47k :TRV228E/TRV428E
50
XRST_VTR
(6/10)
51
LM_LIM_DET
(6/10)