Sony RMT-V231B, Service Manual

Page: 34 / 76

SLV-777HF/778HF/788HF
3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM
3-5 3-6
MA-327 BOARD
DRUM MOTOR
OUTPUT
HALL
DEVICE
CAPSTAN MOTOR
M901
M902
HALL
DEVICE
U+
OUTPUT
MATRIX
M
VCC 1
2
3
4
PG
FG
CAPSTAN
FG
U-
V+
V-
W+
W-
U
LIMITER
SW5V
V
W
VM
VCC
TL
1
6
5
2
3
7
1
6
5
2
3
7
CN102
SW5V M12V
PS101
CVS
CAP RVS
CAP FG
D109
1
2
3
4
CN101
M12V
M12V
D VS
D PG
D FG
1
CN301
3
CTL
HEAD
1
CN103
3
2 M
LOADING
MOTOR
4
2
3
1
CAM
ENCODER
MECHA
POSITION
(
(
CN103
MODE1
MODE2
MODE3
MODE4
IC160
SERVO CONTROL
(1/2)
DRUM DA 78
DRUM PG 86
DRUM FG 87
AMP VREF 89
CAP ERR 77
CAP RVS 16
CAP FG 85
CTL IN+ 92
LOADING
MOTOR DRIVE
IC101
VCC1 8
VCC2 9
CAM-
2
CAM+ 10
3 IN1
4 IN2
M12V
IC160
SYSTEM CONTROL
(2/2)
S REEL FG
79
PH102
T REEL
FG
LED
DRIVE
Q103
VCC 37
AVCC 99
AMP VCC 98
D162
T REEL FG 80
16M 38
SW12V
PH101
S REEL
FG
T/S LED
D103
T SENS
7
S SENS 6
T/E LED
20
Q101
TAKE END
SENSOR
D103
D6V
Q102
SUPPLY END
SENSOR
REC PRF 30
16M 39
X160
16MHz
REC
PROOF
S101
CW 58
29
28
27
26
MODE1
MODE2
MODE3
MODE4
MODE1
MODE2
MODE3
MODE4
22 I2C DATA 1
17 I2C CLOCK 1
48 A MUTE
9 AF ANV
19 AF SWP
49 AF REC P
50 AF REC
8 VIDEO RF
84 C SYNC
65 S OUT 1
67 S CLK 1
18 RF SWP
68 S OUT 0
13 Q VD
P CONT M12
P CONT SW12
IC980
SIRCS/CBC
I/O
REG
ON/OFF
12
STATUS 6
S IN
4
S OUT 5
9 CONTROL
S OUT
11 CONTROL
S IN
1 REG OUT
IN
OUT
CABLE BOX
CONTROL/
CONTROL S
CNJ981
CNJ980
69 S IN 0
70 S CLK
ANT SEL
24 PLL ENABLE
23 PLL CLOCK
I2C CLOCK1 IC360 42
FROM/TO
VIDEO
BLOCK
I2C DATA1 IC360 41
A MUTE IC201 70
AF ANV IC360 39
AF SWP IC340 1
AF REC P IC340 4
AF REC IC340 5
I2C DATA VIDEO IC201 64
I2C CLOCK VIED IC201 63
VIDEO RF IC260 26
C SYNC IC201 37
S OUT1 IC260 19
S CLK1 IC260 20
RF SWP IC260 17
Q VD IC201 33
FROM/TO
AUDIO
BLOCK
,IC260 18
,IC360 40
S OUT 0 IC521 5
S CLK 0 IC521 4
Q604
IC601 4
TO
POWER
BLOCK
46 CBC ON
63 NICOLE
STEREO IC733 11
TU AFT IF702 6
PLL DATA TU701 11
PLL ENABLE TU701 12
TV/VTR TU701 4
MAIN/SAP IC733 8
PLL CLOCK TU701 10
FROMTO
TUNER
BLOCK
7
10
8
9
14
11
16
17
4
CN162
P CONT M12
S CK 0
S OUT 0
SIN 0
FLD CS
FUNC KEY1
FUNC KEY2
DMS UP
DMS DOWN
BLOCK
TO/FROM
MODE
CONTROL
16
D109
(SEE PAGE 4-8, 11, 22)
4 4
CTL REF
CTL IN- 91
32.7k
41
32.7k 42
X161
32.768kHz
100 PLL DATA
3 TU AFT
25 SAP
12 STEREO
74 MAIN/SAP
53 TA MUTE
15 F MONO
SAP IC733 10
MAIN/SAP IC733 9
TA MUTE IC733 5
F MONO IC733 7
45 MAIN/SAP
BLOCK
(SEE PAGE 3-12)
55 DMS DOWN
54 DMS UP
4 FUNC KEY2
5 FUNC KEY1
66 FLD CS
14 REMCON
(SEE PAGE 3-9)
6
-30V
12
F+
4
F-
13
REMOCON
788HF ONLY
F-
CN603 1
F- CN603 2
-30V CN603 3
56 P CONT M 12
73 SIRCS OUT
76 EEP WP
59 P CONT SW12
64 OSD CS OSD CS IC521 3
51 I2C CLOCK VIDEO
52 I2C DATA VIDEO
(SEE PAGE 3-3,4)
(SEE PAGE 3-8)
RESET
PULSE
GEN.
POWER
FAIL
DET.
6
8
5
7
IC162
L161 D161
D6V
L163
RESET 43
P FAIL 75
21
EEPROM
IC161
6
5
7
CN104
4
5
2
3
RESET
WP
S DATA
S CLK
FOR
CHECK
(SEE PAGE 4-25)
IC160
&•
REC/PB
5Vp-p
62.5kHz
IC160
*§
REC/PB
4.5Vp-p
30Hz
IC160
&¶
REC/PB
5Vp-p
62.5kHz
IC160
*∞
REC/PB
1.9Vp-p
2.2kHz
IC160
(¡
REC
4Vp-p
90Hz
IC160
(™
REC
2.2Vp-p
90Hz
IC160 #• REC/PB
2.3Vp-p
16MHz
IC160
!•
REC/PB
IC160 !ª REC/PB
5Vp-p
30Hz
IC160 $¡ REC/PB
2Vp-p
32kHz
IC160 *¶ REC/PB
4Vp-p 360Hz