Sony DSR-20MD Service Manual page 72

DSR-20MD/20MDP
MD-63, MD-64, MD-65 (TAPE DETECT), FP-406 (TAPE SENSOR) SCHEMATIC DIAGRAM
1 2 3
A
MD-63 BOARD
TAPE DETECT
-REF.NO:6,000 SERIES-
B
CL120
3.1
CN101 CL119
16P
CL101
END SENS 1
CL102
C OUT 2
CL103
C IN 3
CL104
REC PROOF 4
CL105
CHIME VDD 5
CL106
C
CHIME SDA 6
CL107
TO CM-56 BOARD (1/2)
CHIME SCK 7
CN001 CL108
CHIME GND 8
(SEE PAGE 4-101)
CL109
TAPE LED 9
CL110
COM 10
CL111
EL 5V 11
CL112
EL GND 12
CL113
T EL OUT 13
D CL114
S S REEL FG 14
CL115
REEL LED 15
CL116
L S REEL FG 16
E
IC101
R101
F
180
MD-65 BOARD
G
TAPE DETECT
-REF.NO:5,000 SERIES-
CN204
5P
COM 5
S001 MODE SWA 4
MODE
MODE SWB 3
SWITCH
MODE SWC 2
H
MODE SWD 1
M903 CN203
2P
LM LOAD 1
LOADING
MOTOR
LM UNLOAD 2
CN201
11P
I M901
PG 1
FG 2
SENSOR VCC 3
GND 4
GND 5
DRUM
U 6
MOTOR
U 7
V 8
J
V 9
W 10
W 11
05
TAPE DETECT, TAPE SENSOR
MD-63, MD-64, MD-65 FP-406
4 5 6
FP-406 BOARD
TAPE SENSOR
NO MARK:REC/PB MODE
( ):WITHOUT A CASSETTE
-REF.NO:5,000 SERIES-
*:IMPOSSIBLE TO MEASURE THE
VOLTAGE AT THE MARKED POINTS.
D101
GL4600S COM
C OUT SW
Q102
C IN SW
PT4600FS S101
REC PROOF
CHIME VDD
CHIME SDA
CHIME SCK
CHIME GND
C101
1.2
100
6.3V
4 3
C102
0.01
2.4 *
4 3 4 3
1 2
2.2 1.2
CL117
R108
820
R109
1 2 1 2 22k RV101
47k
2.4 1.2 1.2
CL118
IC102
R103
IC105 6800
L S REEL FG S S REEL FG S ELETEN
CN202
14P
14 COM
13 MODE SW A
12 MODE SW B
11 MODE SW C
10 MODE SW D
9 LM LOAD
TO CM-56 BOARD (2/2)
8 LM UNLOAD
CN008
7 DRUM W (SEE PAGE 4-104)
6 DRUM V
5 DRUM U
4 GND
3 FG
2 PG
1 SENSOR VCC
4-91
• See page 4-89 for MD-63, MD-64, MD-65, FP-406 printed wiring boards.
7 8 9
S902
CN002
S901
9P
TOP SENS 1
COM 2
L T REEL FG 3
TO CM-56 BOARD (2/2)
REEL LED 4
CN901
CN005
EL 5V 5
(SEE PAGE 4-103)
S EL OUT 6
S EL GND 7
CC DOWN SW 8
S T REEL FG 9
0
4.9
8 7 6 5
-
+
+
-
1 2 3 4
2.3 1.2 1.2
(1.2)
R107
6800
R102
22k
RV102
1M
IC103
SIGNAL PATH
Drum speed servo
Drum phase servo
Drum servo(speed and phase)
10 11 12 13
MD-64 BOARD
TAPE DETECT
-REF.NO:7,000 SERIES-
NO MARK:REC/PB MODE
( ):WITHOUT A CASSETTE
*:IMPOSSIBLE TO MEASURE THE
VOLTAGE AT THE MARKED POINTS.
CC DOWN SW
3.1
S002
Q001
CL1
PT4600FS
CL2
CL3
IC006
CL4
CL5
CL6
CL7
CL8
CL9
3.1 *
1.2
4 3 4 3
4 3
1 2 1 2
R002 2.4 1.2 1.2 1 2
180
2.3 1.2
IC004 IC003 R008
820
CL11
L T REEL FG S T REEL FG
R007
RV001
22k
47k
CL10
REC REC/PB PB
4-92
14 15
IC005
C001 0
100
6.3V 4.9
C002 8 7 6 5
0.01
-
+
+
-
1 2 3 4
1.3 1.2 1.2
(1.5)
R005
6800
R004
22k
RV002
1M
R003
6800
T ELETEN