Overall Block Diagram (3/5) - Sony DSR-250 Service Manual

3-3. OVERALL BLOCK DIAGRAM (3/5)

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