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HITACHI HT-464
BLOCK DIAGRAM
e¢ BLOCK SCHEMA
e¢ SCHEMA
S1 (Cam A) Oe
Time
constant
Rotation command
o-
of DC motor
o
{Prevention of DC motor reverse rotation)
on oes
Time
constant
Power supply reset
+
(9.5 Vio
(Decision with
automatic operation)
1CO4
D011
$2 (Cam B)
(Command
of rotation direction of DC motor)
.
Constant
CdS01
Differential
F-
Qo9
cog, R21
Reference
S6
voltage
(Speed change-over)
Return
decision
Comparison
1C02
(Reverse signal
of DD motor}
(Power supply reset)
(Startecut
6
5
decision)
D14
ee
IC03
3
{C04
Decision
of rotation
direction
of DC
motor
Auto-in operation,
Auto:
cut operation decision
Decision
D06
VA
N\
Z
c
Oo
6
gE8
Arm
drive
vee
DC motor
200
drive circuit
eee
Bc
2Ee
Q04 — 08
| aoa
$3
4
aa
|
|
|
$5
|
(Repeat)
i
Vcc
1CO1
6
$4
(UPeDOWN)
5
Ww
CdS02
(Arm switch}
Rotation
detection
F-V converter
Q53, 54
Q60, 61
azar |
Ss
|
e
|
1 3
|
oe)
oO
5 |
5
i
Q58, 59
el
=
I
Oy.
i epee
ise
ol
74NV
Rectifier
(Power supply)
—15—
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