Sony SLV-7700KME, Service Manual

Page: 43 / 135

SLV-7700KME/7700KML
4-6. SERVO/SYSTEM CONTROL BLOCK DIAGRAM
4-11 4-12
MA-303 BOARD
CAPSTAN MOTOR
M902
HALL
DEVICE
U+
CAPSTAN
FG
U-
V+
V-
W+
W-
U
LIMITER
SW5V
V
W
VM
VCC
TL
4
3
2
7
6
5
7
6
5
4
3
8
CN271
SW5V
M12V
CVS
CAP RVS
CAP FG
IC251
CAP ERR
INTEG
D251
15 16
(2/2)
IC251
DRUM ERR
INTEG
13 14
(1/2)
M12V
3
CN101
1
CTL
HEAD
1
CN291
3
M
MOTOR
4
2
3
1
CAM
ENCODER
MECHA
POSITION
( (
MODE1
MODE2
MODE3
MODE4
IC201
SERVO CONTROL
(1/2)
DRUM DA 74
DRUM PG 68
DRUM FG 69
STEP PLS 99
CAP STOP 35
CAP DA 73
CAP RVS 79
CAP FG
70
CTL REC 94
CTL INDEX 96
CAP TRQ3 8
PB CTL 67
CTL STEP
95
MOTOR DRIVE
IC291
VCC1 7
VCC2 8
CAM- 2
CAM+ 10
6 LOAD
5 UNLOAD
PS13V
IC201
SYSTEM CONTROL
(2/2)
S REEL FG 63
PH262
T REEL
FG
LED
DRIVE
Q263
T REEL FG 64
SW5V
PH261
S REEL
FG
T/S LED
T SENS 62
S SENS 61
T/E LED 32
Q261
TAKE UP END
SENSOR
D261
D6V
Q262
SUPPLY END
SENSOR
REC PRF 15
REC
PROOF
S101
CAM UNLOAD 37
30
29
28
27
MODE1
MODE2
MODE3
MODE4
MODE1
MODE2
MODE3
MODE4
16
FOR
CHECK
S901
XTAL 42
EXTAL 43
X160
16MHz
S901
DRUM MOTOR
OUTPUT
HALL
DEVICE
M901
OUTPUT
MATRIX
M
VCC 5
4
3
2
PG
FG
1
2
3
4
CN275
M12V
D VS
D PG
D FG
18
20
19
IC101
CAP FG AMP
(1/2)
1
CN102
2
HE901
ACE HEAD
78 NT JUDGE
CTL HEAD 7
BIAS
9
AMP OUT 5
DC 4
CTL CHECK
CTL (X)
CTL (Y)
CTL
REC/PB AMP
IC101
(2/2)
REC CTL
7
11 INDEX
13 INH
10 RC
1 CTL
2
RTG MM
CAP TRQ2 33
CAP TRQ1 34
M903 CN291
CN281
CAM LOAD 38
CAM 12V 31 4 V
NTSC PB
VHS VIDEO CD
TV
ON PAL
4.43
NTSC
3.58
NTSC
NTSC
PAL
IC251
REEL FG
AMP
18 MESECAM
2 QVD
84 APC PWM
60 APC ERROR
6 PA L60
20 PENTAL
9 NOICAN
19 SP/EP/LP
5 JOG
75 ORC SETTEI
93 NTSC 3.58
23
VCD/VHS 91
V PB
24 NTSC
92 SP
50 RF ENV
1 RF SWP
80 DATA
81 CLK
66 V SYNC
21 AMS
98 NA PB
58
SOUND LEVEL
57 MIC LEVEL
17 A MUTE
55
NT/PAL 24
AF ENV
100 AF SWP
48 REC
4 AF REC P
16 NA REC P
36 FULL ERS
56 HF ADJ
Q201
59 NT PB SW
MESECAM
NT JUDGE
QVD
SHARPNESS
PAL 60
PENTAL
NOICAN
SP/EP/LP
JOG
ORC SETTEI
NTSC 3.58
VCD/VHS
V PB
NTSC
SP
RF ENV
RF SWP
DATA
CLK
COMP SYNC
AF DATA IC501 8
IC302 26
IC302 40
IC302 14
IC302 3
IC302 24
IC302 5
IC302 6
IC302 22
IC302 29
Q310 B
IC302 35
IC301 2
Q306 B
Q304 B
CN301 3
CN301 5
CN301 12
CN301 14
CN301 13
CN301 11
,Q311 B
,Q322 B
,Q315 B ,Q319 B
VCD/VHS IC801 10
AF CLK IC501 9
NT PB CN801 23
AMS Q804 C
NA PB IC801 9
SOUND LEVEL IC812 7
MIC LEVEL IC812 1
A MUTE IC501 6
NT/PAL
AF ENAV
IC501 10
AF SWP IC501 27
REC CN501 5
AF REC P CN501 4
NA REC P Q806 B
FULL ERS Q892 B
HF ADJ CN891 2
Q522 B ,Q532 B
,CN501 6
TO/FROM
VIDEO
BLOCK
TO/FROM
AUDIO
BLOCK
5
CN701
NA PB
TU-168 BOARD
TO
TUNER BLOCK
CN703
46 S OUT
45 S IN
47 S CLK
44 ASURA CS
40 ASURA RESET
5
4
3
11
10
ASURA SO
CN901
ASURA SI
ASURA CLK
ASURA CS
ASURA RESET
HI-66 BOARD
TO/FROM
DISPLAY CONT.
CN301
CAM
CAM
(SEE PAGE 4-10)
(SEE PAGE 4-6)
(SEE PAGE 4-7)
(SEE PAGE 4-19)
IC201 1 REC/PB
IC201 7 REC
5Vp-p (V)
5Vp-p (V)
IC201 $™ REC/PB
IC201
^§
REC/PB
4.4Vp-p (16MHz)
4Vp-p (H)
IC201
^¶
PB
IC201
^•
REC/PB
5Vp-p (V)
5Vp-p (V)
IC201
^ª
REC/PB
IC201 &º REC/PB
5Vp-p (300Hz)
4.4Vp-p (1.56kHz)