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AR-FN3
10. Pusher, reversion, staple unit moving
motor drive circuit
The pusher motor control signal (PMA, A/, B, B/), reversion motor
control signal (RMA, A/, B, B/) and staple unit movement motor con-
trol signal (STUMA, A/, B, B/) from the CPU (IC3) are inputted to the
stepping motor driver IC SLA7024M (IC4, 8, 10), to drive the following
motors: the pusher motor which elevates the paper inside the staple
tray to the stapling position and paper discharge position; the rever-
sion motor which reverses the paper; and the staple unit moving
motor which moves the staple unit to the stapling position.
The driving method is a unipolar, 2-phase (pusher and tray 3 paper
discharge motor), 1-2 phase (staple unit motor), constant-current
chopper driving method.
•
Push motor drive pattern
Up
PMA
PMB
PMA/
PMB/
CPU
(IC03)
P62
PB0
PB1
PB2
PB3
P60
PB4
PB5
PB6
PB7
P40
P41
P42
P43
8/19/1999
Stop
Energized
Down
+5V
R10
1(1W)
R145
IC102
R140
910
R142
10
7
C136
2.4K
270
R143
TD62504F
60
0.1U
R144
60
2.4K
T3MPD
R11
1(1W)
T30MA
2
3
T30MA/
4
T3M0B
5
T3M0B/
+5V
R5
1(2W)
R117
IC102
R131
910
R118
58
5
12
PMPD
R119
C123
200
2.4K
TD62504F
200
0.1U
R120
2.4K
R6
1(2W)
6
PMA
7
PMA/
8
PMB
9
PMB/
+5V
R19
1(1W)
R158
910
R155
R156
C155
2.4K
160
0.1U
R157
2.4K
R20
1(1W)
18
STUMA
19
STUMA/
20
STUMB
21
STUMB/
•
Tray 3 paper discharge motor drive pattern
Tray 3 paper discharge
direction
T3OMA
T3OMB
T3OMA/
T3OMB/
•
Staple unit moving motor drive pattern
Front direction
STUMA
STUMB
STUMA/
STUMB/
+5V
R146
C139
C137
+24V
47K
470P
2200P
R141
C135
47K
470P
IC08
7
2
TDA
VSA
C138
13
12
VSB
TDB
9
2200P
RSA
1
3
OUT A
REFA
8
14
REFB
OUT/A
11
10
RSB
OUT B
18
6
OUT/B
IN A
5
IN/A
4
17
GA
IN B
15
16
GB
IN/B
SLA7024MT
Tray 3 paper discharge motor drive circuit
+5V
R121
C126
C124
+24V
47K
470P
2200P
R116
C122
47K
470P
IC04
VSA 7
2
TDA
C125
13
12
TDB
VSB
9
2200P
RSA
3
1
OUT A
REFA
14
8
REFB
OUT/A
10
11
OUT B
RSB
6
18
OUT/B
IN A
5
IN/A
17
4
IN B
GA
16
15
IN/B
GB
SLA7024MT
Pusher motor drive circuit
+5V
R159
C158
C156
+24V
47K
470P
2200P
R154
C154
47K
470P
IC10
7
2
TDA
VSA
C157
13
12
TDB
VSB
9
2200P
RSA
3
1
OUT A
REFA
14
8
REFB
OUT/A
10
11
OUT B
RSB
6
18
IN A
OUT/B
5
IN/A
17
4
GA
IN B
16
15
IN/B
GB
SLA7024MT
Staple unit moving motor drive circuit
9 – 9
Stop
Stop
Rear direction
C07 47U/35V
+24V
T30MA
T30MA/
T30M
T30MB
T30MB/
+24V
C05 47U/35V
+24V
PSMA
PSMA/
PSM
PSMB
PSMB/
+24V
C06 47U/35V
+24V
STUMA
STUMA/
STUM
STUMB
STUMB/
+24V
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