4-5
Electrical
4.1.7 Control of Punch Regist Clutch
(a) Punch regist clutch, which stops the movement of paper feed roller at the time of
punching, is a +24V electromagnetic clutch. Its control circuit is shown below.
(b) Clutch is turned ON when signal L is transmitted from P27 of IC1 in P.C.B. (PWB-
A).
SM
SM
1
2
CL1
1
2
4
PJ7
DC24V
DC5V
16
15
14
13
12
11
10
1
2
3
4
5
6
7
O1
O2
O3
O4
O5
O6
O7
I1
I2
I3
I4
I5
I6
I7
IC14
IC1
P27
11
RA3
PAPER STANDSTILL CLUTCH
4.1.8 Control of Punch Clutch
(a) Punch clutch, which drives punch unit, is a +24V electromagnetic clutch. Its
control circuit is shown below.
(b) Punching is done when signal L is transmitted from P26 of IC1 in P.C.B. (PWB-
A).
SM
SM
1
2
CL2
1
2
2
PJ7
DC24V
DC5V
16
15
14
13
12
11
10
1
2
3
4
5
6
7
O1
O2
O3
O4
O5
O6
O7
I1
I2
I3
I4
I5
I6
I7
IC14
IC1
P26
12
RA3
PUNCH CLUTCH