Fig. 7-5-1
7-5. Servo/Logic Block Diagram
Po. SAVE +5V
EVER +5V
EVER +14V
H
EVER +5V
EVER
Po. SAVE +5V
1
2
+14V
(EVER)
1
7
8
5
9
CAP Vcc
CAP F / R
CAP LIMITER
CAP CTL REF
CAP Err
EVER +5V
CAM A
CAM B
CAM C
LOAD+
LOAD–
CAM A
CAM B
CAM C
ON / OFF +9V
START
SENSOR
END
TAPE END LED
SENSOR
Po. SAVE +5V
EVER +14V
EVER +5V
SU FG
TU FG
W503
P502
REG & SW
5
4
W501
H
H
6
4
CFGA
CFGB
DRIVE
IC
CAPSTAN
CTL I / O (–)
CTL I / O (+)
Z661
Z662
DFG
BU 5.0V
EVER+5V
MAIN MICROCOMPUTER
CYLINDER DRIVER
IC503
TB6515AP
Z601
Z602
Q601
Q602
D601
IC501
TRACKING
CONTROL
Pre / Rec
CTL
CONTROL
V.SEP
OSD
CONTROL
I C BUS
CONTROL
2
CYLINDER
CONTROL
REC TPG
LOADING
MOTOR
CONTROL
CAPSTAN
CONTROL
SENSOR
INPUT
CONTROL
MECHA CONTROL
MODE CONTROL
D.Vcc
OSD RST
Po GOOD
HiFi DET
CSYNC
V / A SWP
HASW
COLOR ROTARY
COMP IN
VIDEO ENV
HiFi ENV
S610
PV / PH
EE / PB / TRICK
A MUTE
REC (H)
INSEL 1
INSEL 2
5
6
7
6
3
2
9
1
5
CONTROL
CIRCUIT
5
1
2
16
15
11
6
10
REG
7
8
9
BRIDGE
DETECTOR
CONTROL
SERIAL
BS
SIO STB
SIO CLK
SIO IN
SIO OUT
+5V
OSD STB
OSD DATA
OSD CLK
CAPTURE
RMT IN
RMT IN
SUB UP RESET
2
3
1
BU 5.0V
RESET IC
FULL
TMP93CU76F–1A29
S–VHS SW
S601
SW
Q581
+24V
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
12
11
10
9
8
7
6
5
4
3
2
1
13
14
15
VREF
AGC
DET
SHAPE
CTL
SELECT
THRESK
SW
LOGIC
TRAPE
REC
AMP
GAIN
CTL
EVER +5V
EVER +5V
EVER +5V
+9V
ECO MODE
GND1
AGC
AMP
GND2
VCC2
VCC1
VCC1
145k
10k
10k
10k
10k
200k
LA7123
IC506
TO KDB
TO OSD
TO VIDEO / AUDIO
TO POWER
TO KDB
4
3
31
32
38
89
30
90
91
67
66
68
83
84
26
33
5
12
POWER ON
TO PIF
TO AUTIO
24CO2
IC504
EEPROM
S1 N2
S1 N1
REAR A / V
FRONT A / V
TO AUDIO
TO PIF
TO VIDEO
TO OSD
TO AUDIO
TO PRE / REC CTL
TROM KDB
90
39
54
6
20
24
27
29
15
13
59
60
51
40
41
37
88
87
86
85
50
52
53
46
56
57
58
COLOR KILLER
VIDEO SW.P
SVHS I / O
PB L
CARRIER REC ON
SVHS ET
SYNC DET
CSW
TV / VCR
OVER REC
TO VIDEO
TO TUNER
65
99
98
47
70
69
62
63
1
2
94
95
34
61
55
93
49
48
45
43
35
74
73
77
78
72
64
97
96
44
D.GND
AD.GND
CTL AMP GAIN
CTL SCHMITT
D.PWM
D FG
PB CTL
XT OUT
XT IN
X IN
X OUT
CFG.B IN
CFG.A IN
REC CTL
CAP F / R
CAP Vcc Mid
LOAD–
LOAD+
CAM C
CAM B
TU FG
SU FG
END
START
REC INH
AD REF
CAM A
SENSOR CTL
CAP Vcc High
C.PWM
LOADING MOTOR
DRIVER
IC502
TA7291S
1
TO KDB
+5VE
+5VE
RMT OUT
42
DRIVER
LOADING
MOTOR
CAPSTAN
MOTOR
CYLINGER
MOTOR
CTL HEAD
X501
16MHz
X502
32kHz
IC505
PST7025MT
AFT IN
19
17
32
21
27
22
11
14
15
16
BRIDGE