Sony DSR-250, Service Manual

Page: 80 / 322

DSR-250/250P
3-3. OVERALL BLOCK DIAGRAM (3/5)
3-5 3-6
( ) : Page No. shown in ( ) indicates the page to refer on the schematic diagram.
X501
20MHz
16
MODE SW A - D
|
CONTROL
SREEL FG
DRUM PWM
FRRV
TRRT
TRRV
TAPE LED ON
59
CAP PWM
|
REEL ON,REEL FWD
DRUM PG
78
62
DEW DET
83
81
82
TAPE END
TAPE TOP
39
DRUM FG
REC PROOF
TREEL FG
80
MECHA
42
37
26
|
|
106
108
76
74
|
EEPROM
2-4
VSP SO,SI,SCK
FRRV TRRT,TRRV
MC BUS
HI SO,SI,SCK
CHIME SDA,CHIME SCK,CHIME VDD
XCC DOWN
SENSOR
R MECHA DECK
D1
CONNECTOR
TAPE TOP
SENSOR
MOTOR
4PIN
TAPE LED
DRUM
DEW
Q2
M904
TO
OVERALL BLOCK
(4/5)
AD DT
6
PB Y OUT
1
EQ
(TRF)
20
PB CK
6
REC/PB
7
2
SWP
15
(TRW)
6
CN101
EVEN 8
ODD
9
5
22 24
DRP SO,XDRP SCK
REC CK
REC DT
PB CK
TO
OVERALL BLOCK
(2/5)
VI-156 BOARD(3/5)
(SEE PAGE
3-4)
(SEE PAGE
3-8)
(4-30)
(4-29)
(4-35)
(4-36)
95
60
69
68
116
117
114
113
54
53
96
55
44
1
2
ATF ERR
13
34 31
42
IC101
IC102
40
42
27
REC CK
REC DT
AD DT
6
M
IC502
IC501
A/D CONV.
PLL
AMP
REEL
(SEE PAGE 4-39)
3
2
CN007
FOR ADJUSTMENTS
112
111
2
5
3 6
7 1
IC503
VREF
OFR
SEL
FP
L CASSETTE
97
93
XCASETTE IN
98
99
S ELTN ERR
T ELTN ERR
49 LOAD,UNLOAD
50
119
REEL M FG
CAP ON,CAP WFD 45
46
70
REEL PWM
63
47
48
DRUM ON
DRUM CLK
DRUM FWD
CM+,CM-
CM LIMIT DET,
CM LIMIT ON
51
52
105
104
IC4500
(1/2)
39
42
|
33
30
|
CASSETTE
MOTOR
DRIVE
CM+,CM-
CM LIMIT DET,
CM LIMIT ON
DRUM ON
DRUM CLK
DRUM FWD
|
53
55
27
|
22
21
|
19
63 60
MOTOR
DRUM
DRIVE
4 1
FG AMP
PG AMP
L1,L2
UL1,UL2
IC4501
MOTOR
DRIVE
CASSETTE
8
13
17
12 11
9
18
14
4
1
19
6
24
21
U1,U2
V1,V2
W1,W2
20 5
U,V,W
23
18
2
DRIVE
MOTOR
DRUM
1
2
CM LOAD/
CM UNLOAD
CN501
6
1
CN500
10
11
M
MOTOR
CAM
M902
M901
M
MOTOR
DRUM
FG
PG
39
CAP ERROR
REEL
6
30
CAPSTAN
REEL ERROR
46
40
DRUM
DRUM ERROR
25
DC/DC CONV.
44
PWM DRIVE
PWM DRIVE
PWM DRIVE
IC4100
LPF
16 7
IC4500
(2/2)
7 LPF 6
9 LPF 8
(1/2)
IC4300
SWITCHING
Q4101
UNREG
12V
6.25V
Q4103
SWITCHING
SWITCHING
Q4100
SWITCHING
Q4102
FG AMP
24
IC4400
22
23
9
DRIVE 7
CAPSTAN
MOTOR
5
3
16
21
14
15
CAP FG
CAP VS
CAP FWD,
CAP ON
REEL ERROR
4
15
REEL VS
REEL ON,
REER FWD
6
26
23
21
22
|
13
8
IC4200
MOTOR
REEL
DRIVE
CN400
16
17
U,V,W
10
13
14
|
7
HU+,-
HV+,-
HW+,-
1
5
3
2
1
IC4202
19
23
S REEL
22
13
IC4300
20
14
FG AMP
REEL M
(2/2)
17 16
24
25
2
29
FG AMP
FG AMP
T REEL
TAPE
END DET
TOP DET
TAPE
MOTOR
LOADING
DRIVE
3
IC504
5
FG
H
M
M903
MOTOR
CAPSTAN
9
|
6
4
13
10
CN201
|
16
21
6
|
1
CN201
CN200
U,V,W
U+,-
V+,-
W+,-
8
1
7
115
CAP FG
DRUM FG
DRUM PG
10
21
14
13
20
19
7
8
18
|
15
LED
DRIVE
Q4201
2
CN4300
1 LM+,- M905
M
MOTOR
LOADING
MODE A-D
CN200
CHIME VDD,
CHIME SDA,
CHIME SCK
FG1,2
CN1
6
1
CN2
16
21
15
12
15
9
14
1
8
13
2
14
21
9
12
3
CN1
16
18
CN2
IC5 S REEL
FG
T REEL
FG
IC4
TAPE END
SENSOR
Q1
AMP
7
5
6
1
2
3
IC1
IC2
S-ELETEN
SENSOR
IC3
T-ELETEN
SENSOR
S3
S2
CASSETTEIN
CC DOWN
S1
L CASSETTE
SWITCH
MODE
REC
PROOF
CN3
8
11
1
16
6
10
H
FG
(4-29)
(4-30)
REC PROOF
(4-33)
(4-32)
(4-33)
(4-32)
(4-31)
(4-33)
(4-31)
(4-32)
(4-31)
MD-76 BOARD
(SEE PAGE
4-71)
7
|
4