Sony DSR-20MD Service Manual page 78

DSR-20MD/20MDP
CM-56 (SERVO, SYSTEM CONTROL) SCHEMATIC DIAGRAM
1 2 3
CM-56 BOARD (2/2) SERVO,SYSTEM CONTROL
-REF.NO.:4,000 SERIES-
A
XX MARK:NO MOUNT
UNSW_3.1V
SW_3.1V
1-1
B
1-2
C
D
E
F
SW_5V
1-5
EL_GND
G
1-6
MOTOR_GND
SW_5V
1-7
H
1
TO CM-56 BOARD (1/2)
(SEE PAGE 4-102)
I
J
K
R288
XX
Q019
XX
L
1-8
M
FG_GND
N
SW_3.1V
SW_5V
UNSW_6V
UNSW_14V
MOTOR_GND
O
1-3
05
1-4
P
SERVO, SYSTEM CONTROL
CM-56 (2/2)
• See page 4-97 for CM-56 printed wiring board.
• See page 4-123, 124 for waveforms.
4 5 6 7 8
NO MARK:REC/PB MODE
R:REC MODE
P:PB MODE
:IMPOSSIBLE TO MEASURE THE
*
VOLTAGE AT THE MARKED POINTS.
TO MD-64 BOARD
CN002
(SEE PAGE 4-92)
IC016
R241 10k R247 10k R253 10k
R524
C105
47k
0.1u
B
C099
C104
6800p
0.001u
B
B
8
C111
0.01u
F
C080 1
0.1u
B
R201 10k R206 10k R207 10k
C073 C079
6800p 0.001u
B
B
3.1V
5V
IC008
IC008
TC74VHC125F(EL)
3.1
C038
0.01u
A1 2.4
F
MC58 1.5 0.4
A3
15
0.2
MC56
A2 2.5
17
MC57 1.5
16
R155
LND002
0
SHIELD
R154
0 LND001
SHIELD
R522 XX
Q009
14V
MSD601-RT1
L008
R290 C054
22u
1800
C133 20V R196
0.01u 2200
F
C049
R169 0.1u
B
Q018 1800 13.1
XX
C046 R176 C066 R195
22p 18k
0.1u 220
CH
F
16 15 14 13 12 11 10 9
IC012
MB3775PF-G-BND-ER
R226
XX IC012
R153
0 LND003
SHIELD
C055
4700p
D003 LND004
B
XX SHIELD
R225
1 2 3 4 5 6 7 8
0
L010
14V
C067
22p
CH
R287
R164 R523 XX
XX 7500
CL510
R171
2700
D511
XX
R168 C058
C042 C048
1800 22u
0.1u
180p
B 20V
CH
D510
XX
MC94
MC93
4-103
9 10 11 12
R213 R214 R215
R217 R235
1k
10k 220k 9100
10k
R212 C081 F
560
0.1u
14 13 12 11 10 9 8
7 6 5
IC018
UPC339G2-E2
IC018
2 3 4
1 2 3 4 5 6 7
R216
C078 22k
10u
R211
CL525 CL526 16V R234
6800
R218 12k
22k
R227
2200
R220
R228
560
560
R563 1k
R569 47
R561 R562
R233
1k R564 1k C086
1k R570 47 47k
0.01u
F
R567
47
FG2 3 5
5
FG1 3 * MC51
0
R568 * IC017
TC74HC4053AF(EL)
47
*
IC017
3.1
5
8 7
C095
0.01u
F
R503 XX R501 XX
R502 C501
R516 1 2
XX XX
C502 C503 0
B
XX
XX B
B
IC019
IC019
BA10358F-E2
Q502
2SA1242-Y(TE16L)
IC501
13.5 3.2 L011
IC501
13.3 PQ30RV11
D501
SB10-05PCP-TD
1 2 3
13.3
R232
8200
C076
22p
CH R209
680 C083 R231
22u 910 R517
20V
3900
C512
1u
50V
Q012
Q008
MSD601-RT1 2SA1242-Y(TE16L)
13.5 3.2 L013
R194
47p
2200
13.3
D004
13.1 13.3 SB10-05PCP-TD R230
8200
R193 C075 R208
18k 22p 680
CH
R229
C087
910
22u
20V
28
M-GND
1
13 14 15 16 17
R550
10k
Q501
R549
2SB709A-QRS-TX
4700
R547 1.2 1.5 1/8W
R531
100
0.7
CL520
R530 1.5 1/8W
CL521
R548
R529 1.5 1/8W
XX
R528 0 R526
100
C504 0.1u B
C505 0.1u B
CL118
CL506 C1
15 WHE(-)
C506 0.1u B
CL117
C2
14
WHE(+)
CL116
C10
13
CAP V
CL115
C3
28 27 26 25 24 23 22 21 20 19 18 17 16 15 12 UHE(-)
CL114
C4
11 UHE(+)
CL113
10 HE VCC
CL112
C5
18
9 VHE(-)
IC503
CL111
C6
8
VHE(+)
19 CL110
IC503
7 HE GND
LB1897D
CL109
C9
6 CAP U
CL108
C11
5 CAP W
C7 CL107
4 FG OUT(-)
C8 CL106
1 2 3 4 5 6 7 8 9 10 11 12 13 14 3
FG OUT(+)
CL105
2
FG VCC
CL104
1 FG GND
CN007 15P
R519
47k
R275
R268 100k 120k
R257
18k
C120
0.1u B
CN008 14P
CL132
C103
47u 1 COM
6 5 C112 CL131
16V MC22
0.1u
2 MODE SW A
F
CL130
MC23
3
C107 MODE SW B
CL129
0.1u MC24
4 MODE SW C
F
CL128
MC25
R271 R274
5 MODE SW D
10k 10k CL127
3 4 6 LM LOAD
C129
R270 CL126
0.1u B
CL507
10k L502 C126 7 LM UNLOAD
47uH 0.1u B CL125
CL527
8 DRUM W
CL124
R244 9
DRUM V
CL123
15k
10 DRUM U
C128 0.1u B
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 11 GND
CL121
S3
12 FG
S2
CL120
13 PG
CL119
S1
14
SENSER VCC
IC021
20 IC021
CXA1793N-E2
4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
C508
47u
6.3V
R520
47k
R121 1.5 1/8W
CL523 CL522
R122 1.5 1/8W
R125 1.5 1/8W
R146
0
R285
C093 0.1u B 100
C094 0.1u B
CL103
D1
CL508
CL102
C096 0.1u B D2
CL101
D10
CL100
D3
CL099
27 26 25 24 23 22 21 20 19 18 17 16 15 D4
CL098
CL097
D5
IC022 21 CL096
D6
CL095
22
IC022
CL094
LB1897D D9
CL093
D11
CL092
D7
CL091
D8
L014
2 3 4 5 6 7 8 9 10 11 12 13 14 CL090
47uH
CL089
C092
47u
C090
6.3V
0.47u
B
R284
R521 100
47k
4-104
18 19 20 21
M902
CAPSTAN
MOTOR
M
TO MD-65 BOARD
CN202
(SEE PAGE 4-91)
CN006 15P
1 WHE(-)
2 WHE(+)
3
REEL V
4 UHE(-)
5 UHE(+)
M904
REEL
6 HE VCC
MOTOR
7 VHE(-)
M
8 VHE(+)
9
HE GND
10 REEL U
11 REEL W
12 FG OUT(-)
13 FG OUT(+)
14
FG VCC
15 FG GND
SIGNAL PATH
REC REC/PB PB
Drum speed servo
Drum phase servo
Drum servo(speed and phase)
Capstan speed servo
Capstan phase servo
Capstan servo(speed and phase)