Sharp AR-FN1 (serv.man10) Service Manual ▷ View online
8. Solenoid and clutch drive circuit
The solenoid and clutch drive circuit uses non-inversion transistor
arrays TD62318AP (IC17, 18) which turn on the solenoids and
clutches when the input signal is at L; and an inversion transistor
array TD62004AP (IC5) which turns on the solenoids and clutches
when the input signal is at H.
arrays TD62318AP (IC17, 18) which turn on the solenoids and
clutches when the input signal is at L; and an inversion transistor
array TD62004AP (IC5) which turns on the solenoids and clutches
when the input signal is at H.
The expansion I/O PG port which controls the solenoids and clutches
is an open collector type which becomes high impedance when reset-
ting and H output. For this reason, to turn on the solenoids and
clutches at L level, the non-inversion type TD62318AP is used for
driving the PG port. On the other hand, the expansion I/O’s PC port is
at L level at resetting. For this reason, for driving the PC port, the
inversion type TD62004AP which turns on the solenoids and clutches
at H level is used.
is an open collector type which becomes high impedance when reset-
ting and H output. For this reason, to turn on the solenoids and
clutches at L level, the non-inversion type TD62318AP is used for
driving the PG port. On the other hand, the expansion I/O’s PC port is
at L level at resetting. For this reason, for driving the PC port, the
inversion type TD62004AP which turns on the solenoids and clutches
at H level is used.
9. Jogger motor drive circuit
The jogger motor control signal (JMA, A/, B. B/) from the expansion
I/O (IC3) is input into the driver IC TD62004AP (IC8), to drive the
jogger stepping motor which aligns the sheets sidewise.
I/O (IC3) is input into the driver IC TD62004AP (IC8), to drive the
jogger stepping motor which aligns the sheets sidewise.
The driving method is unipolar, 1-2 phase excitement, constant-volt-
age method.
age method.
Here is the driving pattern for the jogger motor.
(IC03)
PF0
PF1
PF2
PF3
PF1
PF2
PF3
59 INGSL/
60 T3UPSL/
61 OG1SL/
62 OG3SL/
60 T3UPSL/
61 OG1SL/
62 OG3SL/
PC4
PC5
PC6
PC7
PC5
PC6
PC7
49 SPSL
48 STSL
48 STSL
47 OG2SL
46 WLCL
PF4
PF5
PF6
PF7
PF5
PF6
PF7
63 RRSL/
64 T12CL/
64 T12CL/
1 PDCL/
2 STORCL/
1
2
3
4
5
6
7
8
3
4
5
6
7
8
13
4
5
5
12
13
4
5
5
12
14
11
6
3
14
11
6
3
16
15
14
15
14
13
12
11
12
11
10
9
I1
I2
I3
I4
I5
I6
I7
GND
I2
I3
I4
I5
I6
I7
GND
COM
O1
O2
O3
O4
O5
O6
O2
O3
O4
O5
O6
O7
IC05
TD62004AP
IC17
IC18
TD62318AP
8
16
9
1
15
10
7
2
I4
I3
I2
I1
O4
O3
O2
O1
VCC2
VCC1
COM2
COM1
GND
GND
GND
GND
8
16
9
1
1
15
10
7
2
I4
I3
I2
I1
O4
O3
O2
O1
VCC2
VCC1
COM2
COM1
GND
GND
GND
GND
TD62318AP
+24V
RD16FB
RD16FB
ZD02
ZD08
+5V
+24V
+5V
+24V
SPSL/
STSL/
OG2SL/
WLCL/
INGSL/
T3UPSL/
OG1SL/
OG3SL/
OG3SL/
RRSL/
T12CL/
PDCL/
STORCL/
+24V
+24V
+24V
I/0
RRSL
T12CL
PDCL
T12CL
PDCL
STORCL
OG3SL
OG1SL
T3UPSL
INGSL
WLCL
OG2SL
STSL
SPSL
I/O
PC0
PC3
(IC03)
50
53
52
51
PC2
PC1
JMA
JMA/
JMA/
JMB
JMB/
JMB/
1
2
3
4
2
3
4
I1
5
7
6
8
I2
I3
I4
I5
I6
I7
GND
I3
I4
I5
I6
I7
GND
IC08
TD62004AP
O1
O2
O3
O4
O5
O6
O7
O2
O3
O4
O5
O6
O7
COM
9
16
15
14
13
16
15
14
13
11
12
10
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
R13
2.4K(1/4W)
JGMA
JGMA/
JGMB
JGMB
JGMB/
+24V
JGM
+24V
+24V
JMA
JMB
JMA/
JMB/
Alignment direction
Stop
Opening direction
9 – 8
10. Pusher, reversion, staple unit
movement 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 (IC21) is input to the
stepping motor driver IC SLA7024M (IC11, 4, 7), 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 movement
motor which move the staple unit to the stapling position.
control signal (RMA, A/, B, B/) and staple unit movement motor con-
trol signal (STUMA, A/, B, B/) from the CPU (IC21) is input to the
stepping motor driver IC SLA7024M (IC11, 4, 7), 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 movement
motor which move the staple unit to the stapling position.
The driving method is a unipolar, 2-phase (pusher), 1-2 phase (rever-
sion, staple unit movement), constant-current chopper driving
method.
sion, staple unit movement), constant-current chopper driving
method.
When the paper is stored inside the staple tray by static excitement
onto the pusher motor, the PMPD signal from the CPU is made at H
level to set the motor power down mode, in order to suppress heat
buildup (usually set to about 50% of the motor drive current).
onto the pusher motor, the PMPD signal from the CPU is made at H
level to set the motor power down mode, in order to suppress heat
buildup (usually set to about 50% of the motor drive current).
Here are the driving patterns for the pusher, reversion, staple unit
movement motors.
movement motors.
PMA
PMB
PMA/
PMB/
Up
Stop
Energized
Down
RMA
RMB
RMA/
RMB/
Reversion unit paper
entry direction
entry direction
Stop
Reversion unit paper
discharge direction
discharge direction
STUMA
STUMB
STUMA/
STUMB/
Front direction
Stop
Rear direction
CPU
PB0
PB3
(IC02)
2
5
4
3
PB2
PB1
RMA
RMA/
RMB
RMB/
RMA/
RMB
RMB/
3
14
10
6
REFA
5
16
17
REFB
RSB
IN A
RSB
IN A
IN/A
IN B
IN B
IN/B
IC04
SLA7024MT
OUT A
OUT/A
OUT B
OUT B
OUT/B
GA
GB
GB
VSA 7
1
8
11
18
18
4
15
RVMA
RVMA/
RVMB
RVMB/
RVMA/
RVMB
RVMB/
+24V
12
VSB
2
9
13
TDA
TDB
RSA
TDB
RSA
R142
47K
C132
470P
C136
470P
+5V
C04 47U/35V
RVM
+24V
+24V
R146
47K
C135
2200P
R01
1(1W)
R145
2.4K
R02
1(1W)
R144
2.4K
C134
2200P
R143
0.1U
C133
100
R141
910
+5V
PB4
PB7
58
9
8
7
PB6
PB5
PMA
PMA/
PMA/
PMB
PMB/
PMB/
3
14
10
6
REFA
5
16
17
REFB
RSB
IN A
IN/A
IN B
IN/B
RSB
IN A
IN/A
IN B
IN/B
IC11
SLA7024MT
OUT A
OUT/A
OUT B
OUT B
OUT/B
GA
GB
GB
VSA 7
1
8
11
18
18
4
15
PSMA
PSMA/
PSMB
PSMB/
PSMA/
PSMB
PSMB/
+24V
12
VSB
2
9
13
TDA
TDB
RSA
TDB
RSA
R154
47K
C143
470P
C147
470P
+5V
C05
47U/35V
PSM
+24V
+24V
R159
47K
C146
2200P
R14
1(2W)
R157
2.4K
R15
1(2W)
R156
2.4K
C145
2200P
R155
0.1U
C144
200
R158
910
+5V
IC05
TD62004AP
10
7
P40
P43
18
21
20
19
P42
P41
STUMA
STUMA/
STUMA/
STUMB
STUMB/
STUMB/
3
14
10
6
REFA
5
16
17
REFB
RSB
RSB
IN A
IN/A
IN B
IN/A
IN B
IN/B
IC07
SLA7024MT
OUT A
OUT/A
OUT B
OUT B
OUT/B
GA
GB
GB
VSA 7
1
8
11
18
18
4
15
STUMA
STUMA/
STUMB
STUMB/
STUMA/
STUMB
STUMB/
+24V
12
VSB
2
9
13
TDA
TDB
RSA
TDB
RSA
R148
47K
C138
470P
C142
470P
+5V
C03 47U/35V
STUM
+24V
+24V
R152
47K
C141
2200P
R11
1(1W)
R151
2.4K
R12
1(1W)
R150
2.4K
C140
2200P
R149
0.1U
C139
160
R147
910
+5V
6
P60
PMPD
R153
200
Reversion motor driving circuit
Pusher motor driving circuit
Staple unit moving motor driving circuit
9 – 9
11. Elevator motor drive circuit
The elevator motor control signal (EMA, B) from the expansion I/O is
input through the driver TD62503F (IC13) to the H driver STA457C
(IC12), to drive the elevator motor which adjusts the tray height ac-
cording to the paper volume stored in the off-set tray (tray 3). EMA,B
signal logic controls the rotational direction of the motor (CW/CCW) to
move up and down the tray.
input through the driver TD62503F (IC13) to the H driver STA457C
(IC12), to drive the elevator motor which adjusts the tray height ac-
cording to the paper volume stored in the off-set tray (tray 3). EMA,B
signal logic controls the rotational direction of the motor (CW/CCW) to
move up and down the tray.
The motor is braked to improve the stopping accuracy of the tray.
TD62503 (IC13, a driver for driving STA457C, consists of R180-
R183, R197, R198, C158, C159, C166, C167, D7, and D8 which
forms a delay circuit to prevent short electric current from flowing
inside the H driver when EMA and B are changed over.
R183, R197, R198, C158, C159, C166, C167, D7, and D8 which
forms a delay circuit to prevent short electric current from flowing
inside the H driver when EMA and B are changed over.
To protect the circuit from shorting and motor locking, a protective
fuse (F3) is installed.
fuse (F3) is installed.
EMB
EMA
Rotational
direction
Working direction
0
0
Brake
Brake
0
1
CW
Elevation
1
0
CCW
Descent
1
1
Stop
Stop
12. Off-set motor drive circuit
The off-set motor control signal (OFMA,B) from the CPU is input to
the H driver TA7291S (IC1), to drive the off-set motor which moves
the tray sidewise against the paper discharge direction, in order to
sort the sheets discahrged to the off-set tray (tray 3) by the number of
sheets specified.
the H driver TA7291S (IC1), to drive the off-set motor which moves
the tray sidewise against the paper discharge direction, in order to
sort the sheets discahrged to the off-set tray (tray 3) by the number of
sheets specified.
The rotational direction of the motor is crank controlled in one direc-
tion (CW) and braked to a stop at the off-set home position.
tion (CW) and braked to a stop at the off-set home position.
To protect the circuit from shorting and motor locking, a protective
fuse (F1) is installed.
fuse (F1) is installed.
OFMB
OFMA
Rotational
direction
Working direction
0
0
Stop
Stop
0
1
CCW
Not used
1
0
CW
Off-set operation
1
1
Brake
Brake
9
4
8
F03
1.15A/125V
T1.0A/250V
+24V
1
6
8
4
9
STA457C
IC12
6
1
3
3
2
7
7
5
5
10
10
EVM+
EVM-
EVM
D06 D05
1SR124-400x2
I/O
(IC03)
PE0
PE1
4 EMA
5 EMB
TD62503F
TD62503F
TD62503F
TD62503F
+5V
R183
R182
R181
R180
D07
D08
R178
R179
4.7K
4.7K
200
200
1K
1K
1SS133
1SS133
C158
1000P
C159
1000P
1
16
2
15
3
14
4
13
IC13D
IC13C
IC13B
IC13A
+5V
R198
R197
1K
1K
C166
68000P
C167
68000P
R20
R19
2.4K(1/4W)
2.4K(1/4W)
1K
2
Vcc
IN1
IN2
GND
VS
VREF
OUT1
OUT2
TA7291S
IC01
2
9
1
5
3
7
8
6
CPU
(IC02)
P44
P45
23 OFMA
24 OFMB
R101
R102
47K
47K
+5V
F01
0.315A/125V
T0.25A/250V
T0.25A/250V
C01
10U/35V
OFM+
OFM-
OFM
+24V
9 – 10
13. 10V power generating circuit
The 10V power generating circuit generates
+
10V which is supplied
to the power supply of the transfer motor IC uPD1246C (IC10) and
comparator BA10393F (IC15). The circuit consists of a Zener diode
RD11EB (ZD7), transistor 2SC1472 (Q5), other peripheral resis-
tances and capacitors.
comparator BA10393F (IC15). The circuit consists of a Zener diode
RD11EB (ZD7), transistor 2SC1472 (Q5), other peripheral resis-
tances and capacitors.
+
24V is reduced to about
+
11V by the Zener
diode ZD7 and passed through the emitter follower circuit of the
transistor Q5 to become about
transistor Q5 to become about
+
10V for outputting.
14. Transfer motor drive circuit
The transfer motor drive circuit consists of a motor IC yP1246C
(IC10), transistor array TD62503F (IC16), motor driver IC SLA6023
(IC20) and peripheral circuits.
(IC10), transistor array TD62503F (IC16), motor driver IC SLA6023
(IC20) and peripheral circuits.
When the transfer motor control signal (FMPWM) from the CPU be-
comes at L level, the transistor inside the IC20 turns on to let the
motor current flow to start the motor. When the motor is started, the
transfer motor hole signal (HU, HV, HW) input to the IC10 is changed
over to switch over the drive of the transistor inside the IC20 so that
the motor begins to rotate under non-controlled state.
comes at L level, the transistor inside the IC20 turns on to let the
motor current flow to start the motor. When the motor is started, the
transfer motor hole signal (HU, HV, HW) input to the IC10 is changed
over to switch over the drive of the transistor inside the IC20 so that
the motor begins to rotate under non-controlled state.
As the transfer motor rotates, the speed signal (FMRE) is output from
the motor. The CPU incorporates the signal. It reduces the ON duty
of the FMPWM signal to increase the speed when the motor speed is
slow; it increases the ON duty of the FMPWM signal to reduce the
speed when the motor speed is high. The motor speed is thus main-
tained at a constant speed. As the current flowing into the motor
becomes large, the current flowing to the R25 also becomes large,
thus raising the voltage at the negative side of the comparator
BA10393F (IC15). When this voltage becomes greater than the refer-
ence voltage (about 1.1V) preset at the plus side, the output of IC15
becomes at L level, thus turning off the IC20 transistor to restrict the
current flowing to the motor (current limit setting: about 5A).
the motor. The CPU incorporates the signal. It reduces the ON duty
of the FMPWM signal to increase the speed when the motor speed is
slow; it increases the ON duty of the FMPWM signal to reduce the
speed when the motor speed is high. The motor speed is thus main-
tained at a constant speed. As the current flowing into the motor
becomes large, the current flowing to the R25 also becomes large,
thus raising the voltage at the negative side of the comparator
BA10393F (IC15). When this voltage becomes greater than the refer-
ence voltage (about 1.1V) preset at the plus side, the output of IC15
becomes at L level, thus turning off the IC20 transistor to restrict the
current flowing to the motor (current limit setting: about 5A).
+24V
R22
1K(1/4W)
1K(1/4W)
R24
1K(1/4W)
R23
100(1/4W)
100(1/4W)
ZD07
RD11EB
C169
0.1U
0.1U
0.1U
C168
C10
47U/35V
ZD01
RD18FB1
Q05
2SC1472
+10V
CPU
PA4
PA7
(IC02)
TD62503F
IC13E
TD62503F
IC16G
IC20
SLA6023
IA1
IB1
IC2
IB2
IA2
GND
Vcc
GND
OA
OB
OC
IC1
3
7
10
D19
TD62503F
IC16A
TD62503F
IC16D
TD62503F
IC16B
TD62503F
IC16C
TD62503F
IC16F
TD62503F
IC16E
BR13
1Kx3
R186
680
680
680
R185
R184
R174
R173
R172
10K
10K
10K
IC10
IN1
IN2
IN3
IN4
IN5
VCC
IN6
VREF
UPC1246C
OUT1
OUT3
OUT5
OUT6
OUT4
OUT2
REVERSE
GND
C163
0.1U
0.1U
C164
0.1U
+5V
5
6
R194
680
R187
2.4K
2.4K
R195
200
R25
0.22
(1W)
2 3 4
4 3 2 BR15
1Kx3
+24V
U V W
1
2
8
9
5
12
11
6
4
D20
D21
1SR124-400
x3
+
-
BA10393F
7
IC15B
C160
C161
C162
0.1Ux3
+10V
+5V
R196
10K
10K
R171
4.7K
4.7K
+5V
+5V
2 3 4
BR11
2.2Kx3
2.2Kx3
+10V
R168
R169
1.2K
1.2K
1.2K
C151
C150
C149
1000Px3
C09
100U/35V
HW
HV
HU
97
99
FMDIR
FMPWM/
5
12
7
10
R193
2.2K
2.2K
2.2K
R192
R191
11
12
13
14
15
16
7
9
10
6
5
3
4
2
1
8
C148
0.1U
0.1U
R160
2.2K
2.2K
R167
2.2K
2.2K
R170
4
5
6
11
12
13
1
2
3
16
15
14
PA6
100
FMRE
R138
10K
R137
2.4K
2.4K
C130
1000P
FMRE
+5V
+5V
BR2-8
10K
FM
Transfer motor
speed signal
speed signal
Transfer motor
haul signal
haul signal
(1-point earth)
9 – 11
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