Sony DSR-PD170 Service Manual page 73

For Schematic Diagram
• Refer to page 4-123 for printed wiring board.
1 2 3 4
VC-358D BOARD(14/18)
NO MARK:REC/PB MODE
DRUM/CAPSTAN MOTOR DRIVE(MD BLOCK)
R :REC MODE
A
P :PB MODE
XX MARK:NO MOUNT
93 93
(12/18) (15/18)
VTR_UNREG
93 93
(16/18) (18/18)
B
211
(18/18) MT_5.2V
160 MT_GND
(18/18)
L401
10uH
C
R402
R403
10k
10k
C401
0.001u
UNLOAD
B
UNLOAD
LOAD
LOAD
LM_LIM_ON
LM_LIM_ON
LM_LIM_DET
C402
LM_LIM_DET
0.001u
B
D
TAPE_END
C404
TAPE_END_C 0.047u B
TAPE_TOP_C
C405
0.047u B
TAPE_TOP
TAPE_LED_ON C406 2.2u F
TAPE_LED_ON
C407 0.1u B
163
(13/18)
TREEL_FG
T_REEL_-
E
T_REEL_+
S_REEL_+
S_REEL_-
SREEL_FG
XREEL_HALL_ON
XREEL_HALL_ON
F
R401
R404
4700 68k
DRUM_ERROR
116 (18/18)
CAP_ERROR
115
(13/18) CAP_PWM
G
C403
0.01u
B
H
DRUM_FWD
DRUM_FWD
MODE_SW_A
MODE_SW_A
MODE_SW_B
MODE_SW_B
166
(13/18) MODE_SW_C 4.3
MODE_SW_C
R417
MODE_SW_D R419
4700
MODE_SW_D 0 22k
DEW_AD 2.5
DEW_AD
R418
Q402
REC_PROOF_SW 100k
I 2SA2018-H-T2L
Q401
2SD2216J-QR(K8).SO
SWITCH
CHIME_VDD
CHIME_SDA
117
(15/18)
CHIME_SCK
XCC_DOWN
J
SIGNAL PATH
REC REC/PB
Drum speed servo
Drum phase servo
K
Drum servo (speed and phase)
Capstan speed servo
Capstan servo (speed and phase)
L
M
N
16
4-2. SCHEMATIC DIAGRAMS 4-2. SCHEMATIC DIAGRAMS
5 6 7 8 9
C411
0.1u
F
R415
XX
C421
0.1u
B
C422
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
0.1u
B
DRUM_ON
NC STBY D
2.7 2.6
END OUT RF
1.3 0
END IN IC401 OSC
1.3 0.5
TOP IN SELSLP1
DRUM_START
2.7
TOP OUT SELSLP2
R420
5.2 DRUM 0
XX
VM MOTOR DRIVE VS
8.2 DRUM PG. AMP 2.2
VCC2 LOADING CSLP1
63
2.7 MOTOR DRIVE 0.3
RLDO2 CSLP2
REEL FG AMP
0.3
TAPE TOP END DET
RLO2 VCC1
DRUM CAP ERROR AMP
0.3 2.7
IC401
RLM2 BRAKE
0.3 DRUM_FWD
CXA8099ER-TBM-E
RLP2 FRC
2.6
GND FILTER
0.3 2.1
RLP1 66 FC
0.3 65 2.1
RLM1 RSAT
0
RLO1 GND
2.7
RLDO1 FGOUT
1.4
64
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
0.2
C410
0.022u
B
R416
10k
DRUM_FG_SENS
C412
XX C419
R410 B 470p
B FG_PG_COM
2200 R412 0
R405
DRUM_PG_SENS
68k
C408 R435
C409 R411 C413 C416 C420
0.022u 6800p 1u 1500
18k XX 0.1u
B
B B B B
2.7
0.5
PB
Q902
TAPE TOP
4-71
VC-358D BOARD SIDE A VC-358D BOARD SIDE A VC-358D BOARD SIDE B VC-358D BOARD SIDE B
10 11 12 13
DRUM_W
DRUM_V
DRUM_U
DRUM_COM
DRUM_FG
DRUM_FG
C423 C424
DRUM_PG
0.1u 0.1u
DRUM_PG
B
B
DRUM_ON
162
DRUM_ON TO(13/18)
DRUM_START
DRUM_START
DRUM_PWM
R421 1
1
R422
R423 1
C427 0.1u B
C428 0.1u B
C429 4700p B
C430 4700p B
C431 0.1u B
C425
0.047u
B
C426
6.3V
3.3u
P
DRUM_FG
DRUM_PG
R425
12k
R424
270
R437
0
S903
MODE
SWITCH
M
M901
D901
DRUM
TAPE LED
M903
MOTOR
LOADING
MOTOR
Q901
TAPE END
DSR-PD170/PD170P/PD190P
14 15 16 17 18
C440
XX
B
R433
XX
16 15 14 13 12 11 10 9
C437
0.22u
B
1.3 11.7
AGC VG
0.8 IC402 2.7
C436
R432
0.1u VS VCC1
2.2 0.4 2.7
B
WOUT VCC2
C435
CAPSTAN MOTOR
P_GND DRIVE NC 0.47u
0.4 CAP.FG AMP
UOUT GND
IC402
C434 0.8 2.6
R431
0.1u VS SC111319FTBEB FRC
2.2
B 0.4 2.6
VOUT PSAVEB
1.3
C433 R430
2.2 P_GND 67 OFFSET_ADJ
0.1u
B
R429
1M
C432 R426
0.1u 100k
B
25 26 27 28 29 30 31 32
CAPSTAN
HALL
FG
M902
CAPSTAN
MOTOR
4-72
19 20
REEL_EVR
72
(8/18)
R428 100k
CFG_DUTY
R436 39k
157
FFREW_UP (13/18)
148
(11/18)
EVF_13.5V
148
R434 (18/18)
3300
C438
0.1u
B
REG_GND
L402 153
(18/18)
10uH
D_2.8V
R427
B
100k
CAP_FWD
161 (13/18)
CAP_ON
CAP_FG
DRUM_VS
167
(18/18)
CAP_VS
VC-358D (14/18)