Sony GV-A500E, Service Manual

Page: 28 / 127

GV-A500/A500E
3-5. SYSTEM CONTROL BLOCK DIAGRAM
3-13 3-14
IC117
(£(∞
REC
3Vp-p
40msec (PAL)
33msec (NTSC)
IC117
$º
REC/PB
3.2Vp-p (NTSC)
2.6Vp-p (PAL)
20MHz
DEC2
B-MECHA
99
IC117
CK CONT
7
IC206
TO/FROM
VIDEO 2
BLOCK
VC-197 BOARD
IC116
SYSTEM CONTROL
(1/2)
31
CK CONT
VC STBY
24 CS I/O
22 DASTB
15
MSW B
38 RST VC
59
CS VC
EEPROM
2 SCK
3 DI
4 DO
8 VCC
1
CS
6 RST
37 CS EEPROM
36 WE EEPROM
D3.2V
CS I/O 9 IC129
DASTB
3 EVR
VC SCK 8 IC129
VC SO
7
IC129
VC SCK
59
IC109
VC SO 60 IC109
VC SI
20 IC109
FROM
VIDEO 1
BLOCK
VC SCK
46
IC114
VC SO 44 IC114
VC SI
43
IC114
TBC VD
36 IC114
TBC VRST 54 IC114
SYS V
55
IC114
CS SYSTEM 45 IC114
RST SYSTEM
53 IC114
FE ON Q1008
REC LP2
27
IC101
REC LP1 25 IC101
REC SP1 24 IC101
REC SP2
23
IC101
REC PB MODE
16
IC101
MP/ME Q1025
SWP
21 IC101
1/2 SWP
68
IC106
JOG VD
92 IC105
MECHA VD
90
IC105
MECHA FLD 89 IC105
C SYNC
27
IC105
TO/FROM
SERVO
BLOCK
VC SCK 19 IC120
VC SO 20 IC120
RP PB MODE 11 IC120
SWP 31 IC109
CS AU
58
IC109
TO/FROM
AUDIO
BLOCK
SP IN Q1751
IC120 (1/2)
SP/LP
DET
CLOG
DET
29
22
24
IC119
4
1,2 VC SCK
VC SO
VC SI
52
11
12
23
21
2
94
96
93
95
5
4
3
92
51
54
53
25
8
7
35
34
33
TBC VD
RP PB MODE
SWP
1/2 SWP
JOG VD
MECHA FLD
MECHA HD
MECHA VD
CS AU
SP DET
CLOG DET
VC SCK
VC SO
VC SI
REC LP2
REC LP1
REC SP1
REC SP2
FE ON
RST SYSTEM
CS SYSTEM
SYS V
TBC VRST
91 LCD HOLD HOLD Q804,813
TO
LCD
BLOCK
62 HI SCK
60
HI SO
61 HI SI
CC DOWN 18 IC1952
TO/FROM
MODE
CONTROL
BLOCK
14 MSWA
16 MSW C
42 VDD
28 HI8 MP SW
76
AVREF
77 AVDD
87 VDD
86
VPP
46 LOAD
47 UNLOAD
98 LM LMT CONT
32 LM LIM ON
4
VCC2
2 OUT1
EVER
3.15V
3 D3.2V
24
25
26
27
5 VM
29
OUT2
IC122 (1/4)
LOADING
MOTOR DRIVE
MT 5V
VTR UNREG
VCC1
DEC1
LIMIT ENABLE
LIMIT OUT
83
S REEL FG AD
6 ME SW
17
REC PROOF
49
TAPE TOP
50 TAPE END
IC122
(2/4)
TAPE TOP/END
DETECTOR
14 13
TOP IN TOP OUT
17 16 END IN END OUT
IC122 (3/4)
WAVE
SHAPER
Q1854
48 TAPE LED ON
LED
DRIVE
20
23
22
21
18
19
72
T REEL FG AD
27
REEL HALL ON
WAVE SHAPER
41 EXTAL
HI SI
33
IC1952
HI SO 34 IC1952
HI SCK 35 IC1952
CS VC 22 IC1952
VC RST 10 IC1952
VC STBY 11 IC1952
SYS V 62 IC1952
SWP 63 IC1952
7
MSW A
CN105
6
1
2
3
4
5
7
6
1
2
3
4
5
2
C LOCK SW
CN102
14
8
2
14
8
10
13
9
10
13
9
7 7
5 5
4 4
6 6
3 3
11 11
12 12
2 2
M
CC DOWN SW
M903
LOADING
MOTOR
S901
MODE SW
S001
S002
Q001
TAPE TOP
SENSOR
Q002
TAPE END
SENSOR
D001
TAPE LED
H
H
MT5V
D3.2V
MSW C
MSW B
LM +
LM
LM +
LM
MP/ME SW
HI8 MP SW
REC PRF SW
TAPE TOP(C)
TAPE END(C)
TAPE LED(A)
TAPE LED(K)
D3.2V
S REEL( )
S REEL(+)
HALL COM
T REEL( )
T REEL(+)
H002
S REEL
SENSOR
H001
T REEL
SENSOR
40
XTAL
X1751
20MHz
16
CK CONT
39
IC102
(SEE PAGE 3-18)
(SEE PAGE 4-41)
(SEE PAGE 3-4)
(SEE PAGE 3-7,3-9)
(SEE PAGE 3-15)
(SEE PAGE 3-10)
(SEE PAGE 3-20)