1-9-1
BLOCK DIAGRAMS
Servo / System Control Block Diagram
HM240BLS
Comparison Char
t of
Models & Marks
Model
Mark
31A-250
31D-250
A
31C-250
B
C
M
LOADING
MOTOR
CONTR
OL
HEAD
CN504
ACE HEAD ASSEMBLY
MAIN CBA
KEY- 2
C-CONT
C-FG
D-PFG
ST-S
T-REEL
C-F/R
KEY- 1
REMOCON-IN
CTL(+)
RESET
REC-SAF-SW
PG-DELAY
CTL(-)
D-V-SYNC
D-REC-H
RF-SW
C-ROTA
END-S
14
90
87
94
95
76
10
4
80
34
78
2
13
15
18
33
31
8
7
RS501
REMO
TE
SENSOR
LM-FWD/REV
81
D-CONT
77
(DECK ASSEMBLY)
T-REEL
Q501
RESET
Q503
S-REEL
79
SW-POINT
AL+5V
VR501
TIMER+5V
S-REEL
PS503
TP506
IIC-BUS SDA
IIC-BUS SDA
IIC-BUS SCL
A-MUTE-H
A-MUTE-H
V-ENV
6
P-ON-H
C-POW-SW
P-ON-H
C-POW-SW
P-DOWN-L
67
66
86
P-DOWN-L
C-SYNC
58
SW506
FROM/TO
VIDEO BLOCK
TO
AUDIO BLOCK
SDA
SDA
SCL
SCL
TU701(TUNER UNIT)
IC503
(MEMORY)
72
83
IIC-BUS SCL
D-V-SYNC
D-REC-H
RF-SW
C-ROTA
IIC-BUS SDA
V-ENV
C-SYNC
IIC-BUS SCL
71
3
5
SDA
SCL
12
11
LD-SW
9
AL+12V/+20.5V
P-ON+15V
AL+5V
AL+5V
SW507
AL+12V
P-ON+5V
LD-SW
AL+5V
D502
S-LED
FROM/TO
POWER
SUPPLY
BLOCK
KEY
SWITCH
KEY
SWITCH
TP507
SENS-INH
IC501
(SERVO/SYSTEM CONTROL)
AUDIO-SW-1
29
AUDIO-SW-2
30
AUDIO-SW-1
AUDIO-SW-2
5
6
CN502
12
P-ON+15V
11
AL+12V(2)
10
GND
9
D-PFG
8
D-CONT
7
LM-FWD/REV
6
GND
5
C-CONT
4
C-F/R
3
C-FG
2
P-ON+5V
1
AL+12V/+20.5V
SENSOR CBA
SENSOR CBA
END-S
ST-S
Q504
Q505
REC-SAFETY
END-S
CL504
2
CTL(+)
1
CTL(-)
CYLINDER ASSEMBLY
DRUM
MOTOR
PG
SENSOR
M
CAPSTAN MOTOR
M
CAPSTAN
MOTOR
MOTOR
DRIVE
CIRCUIT
Q562
Q563
Q564
Q565
CAS-LED
TIMER-LED
REC-LED
POWER-LED
AL+5V
26
25
24
23
D565
REC
D564
TIMER
D563
CAS
D562
PO
WER
D561
ST
AND-BY
TRICK-H
65
61
SECAM-H
TRICK-H
SECAM-H
B
