Toshiba W808 Service Manual page 109

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