Sharp AR-FN5 (serv.man3) Service Manual ▷ View online
5. Sensor input circuit
Any input signal from each sensor is connected to the pull-up resistor
(10Kohm) and the noise-eliminating capacitor (1000pF), and passed
through the buffer IC (74LS244) to the CPU input port.
(10Kohm) and the noise-eliminating capacitor (1000pF), and passed
through the buffer IC (74LS244) to the CPU input port.
6. Switch input circuit
This circuit detects open/close of the PG staple cover. When the cover
is closed, the contact is closed and the micro switch is closed.
is closed, the contact is closed and the micro switch is closed.
The switches are connected in series to the +24V, forming the power
switch of the drive sections (the staple motor and the main motor).
Only when two micro switches are closed, +24V is supplied.
switch of the drive sections (the staple motor and the main motor).
Only when two micro switches are closed, +24V is supplied.
The tray cover switch is not treated as an interlock. When the cover is
open, it is not driven.
open, it is not driven.
When the PG cover switch is open, staple cover open is not detected.
Signal
Status
Status
PGSW
SCSW
Remark
Machine power interruption
d.c.
d.c.
PG cover SW open
L
d.c.
Stapler cover SW open
H
L
L: DOOR OPEN (or POWER OFF)
H: DOOR CLOSE (POWER ON)
d.c. unsettled (Since power is turned off on the upper side,
the status cannot be seen.)
H: DOOR CLOSE (POWER ON)
d.c. unsettled (Since power is turned off on the upper side,
the status cannot be seen.)
5V
5V
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1
18
1Y2
16
1Y3
14
1Y4
12
2Y1
9
2Y2
7
2Y3
5
2Y4
3
20
10
CPU
74LS244
GND
VCC
1000pF/50V
UDZS5.6B
PHOTO
20K
0.1uF/25V
5V
5V
R8
D9
PG cover SW
Staple cover SW
+24V
(To each motor)
C183
0.047uF/50V
0.047uF/50V
C182
0.047uF/
50V
0.047uF/
50V
R9
1K/2W
1K/2W
D8
1SS133
1SS133
0.22/2W
C193
0.047uF/50V
C194
0.047uF/50V
0.047uF/50V
1SS133
20K
R177
R178
4.7K
4.7K
C195
0.047uF/
50V
0.047uF/
50V
C196
0.047uF/50V
0.047uF/50V
D11
1SS133
1SS133
D10
1SS133
1SS133
127
128
PGSW
SCSW
D13
1SS133
1SS133
D15
1SS133
C198
0.047uF/
50V
0.047uF/
50V
C197
0.047uF/
50V
0.047uF/
50V
R180
4.7K
4.7K
20K
R179
1SS133
D12
24V
CPU(IC1)
PG2
PG1
7. Solenoid/clutch drive circuit
The solenoid/clutch drive circuit uses non-reverse type transistor array
TD62318AF (IC6, 9). When the input signal is at LOW, the solenoid
and the clutch are turned on.
TD62318AF (IC6, 9). When the input signal is at LOW, the solenoid
and the clutch are turned on.
8. Pulse motor drive circuit
There are three kinds of pulse motors: the transport motor which
drives rollers for paper transport, the side guide plate motor which
aligns paper in the vertical direction to the paper transport direction,
and the rear edge plate motor which aligns in the paper transport
direction.
drives rollers for paper transport, the side guide plate motor which
aligns paper in the vertical direction to the paper transport direction,
and the rear edge plate motor which aligns in the paper transport
direction.
The control signal sent from the CPU is passed to the driver IC
MTD1361 (IC1, 2, 7) exclusive for each pulse motor, driving each
motor.
MTD1361 (IC1, 2, 7) exclusive for each pulse motor, driving each
motor.
The drive system is the uni-polar 1-2 phase (switchover between
2-phase and 1-2 phase for the transport motor) excitement constant-
current drive system.
2-phase and 1-2 phase for the transport motor) excitement constant-
current drive system.
The drive pattern of each motor is shown below.
·
Drive pattern of the side guide plate/rear edge plate motor and the main transport motor (1200dpi)
47
48
48
70
71
71
102
5V
24V
5V
24V
24V
24V
1
O1
2
I1
3
4
5
5
I2
6
O2
7
8
9
O3
10
I3
11
12
13
12
13
I4
14
O4
15
16
1
O1
2
I1
3
4
5
5
I2
6
O2
7
8
9
O3
10
I3
11
12
13
12
13
I4
14
O4
15
16
OFSL
GRSL
BKSL
ORCL
97
101
98
/AJSL
/STSL
/GLSL2
/GLSL1
IC9
COM
COM
GND
GND
GND
GND
VCC2
VCC1
TD62318AF
AJSLD
STSLD
GLSL2D
GLSL1D
OFSLD
GRSLD
BKSLD
ORCLD
IC6
GND
GND
VCC2
VCC1
GND
GND
COM
COM
TD62318AF
CPU(IC8)
PE6
PE7
PE7
P62
P63
P63
P51
P53
P53
P52
P50
P50
Stop excitement
between jobs
between jobs
Rear side
Paper entry side
No reverse
Front side
Paper exit side
Paper exit side
Yes
Yes
A
B
/A
/B
BKM
SDM
FMM
·
Drive pattern of the transport motor (600dpi)
A
B
/A
/B
Paper exit side
FMM
24VM
FMMDA
FMMDB
FMMD/A
FMMD/B
FMMDA
FMMDB
FMMD/A
FMMD/B
24VS
SDMD/A
SDMD/B
SDMD/B
SDMDA
SDMDB
SDMDB
24VB
BKMDA
BKMDB
BKMD/A
BKMD/B
BKMDA
BKMDB
BKMD/A
BKMD/B
FMM/A 77
FMMA 79
FMM/B 76
FMMB 78
FMMA 79
FMM/B 76
FMMB 78
FMMD 60
SDM/A 7 3
SDMA 7 5
SDM/B 7 6
SDMB 7 8
SDMA 7 5
SDM/B 7 6
SDMB 7 8
SDMD 6 3
BKM/ A 116
BKMA 118
BKM/ B 115
BKMB 117
BKMA 118
BKM/ B 115
BKMB 117
BKMD 6 2
24V
24V
24V
R125
C122
2200pF/50V
2200pF/50V
2
26
4
9
3
9
3
25
19
24
19
24
5
6
6
23
22
22
Vmm
1
OUT / A
8
OUT A
10
OUT / B
20
OUT B
18
PG
7
PG
13
PG
21
LG
27
NC
17
NC
16
NC
15
NC
14
NC
12
NC
11
R113
1K
+
C5
47uF/35V
1
8
2
7
3
6
4
5
R124
R114
1K
1K
C107
R116
R120
F10
IC P-N38
R148
R129
510
510
C108
Q2
DTC1 14EK
R4
R150
C154
2200pF/50V
2200pF/50V
R126
330
330
2
26
4
9
3
9
3
25
19
24
19
24
5
6
6
23
22
22
Vmm
1
OUT / A
8
OUT A
10
OUT / B
20
OUT B
18
PG
7
PG
13
PG
21
LG
27
NC
17
NC
16
NC
15
NC
14
NC
12
NC
11
C127
2200pF/50V
2200pF/50V
C109
C112
C110
F5
IC P-N38
R122
R151
2
26
4
9
3
9
3
25
19
24
19
24
5
6
6
23
22
22
Vmm
1
OUT / A
8
OUT A
10
OUT / B
20
OUT B
18
PG
7
PG
13
PG
21
LG
27
NC
17
NC
16
NC
15
NC
14
NC
12
NC
11
C113
R1
+
C6
47uF/35V
R111
1K
1K
Q1
DTC1 14EK
R152
330
330
1
8
2
7
3
6
4
5
1
8
2
7
3
6
4
5
Q5
DTC1 14EK
C4
100uF/16V
100uF/16V
F4
IC P-N38
+
C7
47uF/35V
R153
510
510
R2
R112
1K
1K
R127
510
510
R117
R119
C111
C3
47uF/35V
47uF/35V
R147
7.5K
R121
C106
C153
R128
330
330
IC 3
KIA7805
KIA7805
VI N
1
3
GN
D
2
FMM
SDM
SDM
0.047uF/50V
C152
0.047uF/
50V
0.047uF/
50V
IC7
MTD1361
VrefA
VrefB
VrefB
RsA
In B
In /B
In A
In /A
VsB
RsB
VsA
CrB
CrA
VrefA
VrefB
VrefB
RsA
In B
In /B
In A
In /A
VsB
RsB
VsA
CrB
CrA
MTD1361
IC2
VrefA
VrefB
VrefB
RsA
In B
In /B
In A
In /A
VsB
RsB
VsA
CrB
CrA
C126
0.047uF/50V
0.047uF/50V
C125
0.047uF/
50V
0.047uF/
50V
MTD1361
IC1
SW24V
C121
0.047uF/50V
0.047uF/50V
C120
0.047uF/
50V
0.047uF/
50V
BR7
10kX4
10kX4
R134
1K
1K
3300pF/50V
C141
0.1uF/25V
C140
R6
1.0/2W
R135
1K
1K
R7
1.0/2W
C143
0.1uF/25V
C142
3300pF/50V
2.4K
2.4K
7.5K
C150
2200pF/
50V
2200pF/
50V
BR4
10kX4
10kX4
2.4K
2.4K
3300pF/50V
0.1uF/25V
1.0/2W
R5
1.0/2W
0.1uF/25V
3300pF/50V
7.5K
C123
2200pF/
50V
2200pF/
50V
7.5K
BR3
10X4
10X4
2.4K
2.4K
3300pF/50V
0.1uF/25V
1.0/2W
R3
1.0/2W
0.1uF/25V
3300pF/50V
7.5K
7.5K
C118
2200pF/
50V
2200pF/
50V
C117
0.1uF/
25V
0.1uF/
25V
VOUT
390/2W
R118
68
68
C119
0.1uF/25V
CPU(IC8)
R123
68
68
C124
0.1uF/25V
R149
68
68
C151
0.1uF/25V
10k
10k
10k
10k
10k
10k
9. DC motor drive circuit
There are two kinds of DC motors: the lift-up motor which moves up
and down the offset tray, and the offset motor which distribute paper.
and down the offset tray, and the offset motor which distribute paper.
The control signal sent from the CPU is passed to the H driver IC
TA7291S (IC5, 11) exclusive for each DC motor, driving the motor.
TA7291S (IC5, 11) exclusive for each DC motor, driving the motor.
The driver IC can be controlled in CW/CCW. The offset motor can be
controlled only in CW.
controlled only in CW.
·
Lift-up motor
LUM+
LUM-
Rotating direction
Operating direction
0
0
Stop
Stop
1
0
CW
Up
0
1
CCW
Down
1
1
Brake
Brake
·
Offset motor
LUM+
LUM-
Rotating direction
Operating direction
0
0
Stop
Stop
1
0
CW
Offset operation
0
1
CCW
Not used
1
1
Brake
Brake
5V
5V
+
7
1
5
6
6
2
10
VS
8
4
NC
3
NC
9
D2
+
+
+
7
1
5
6
6
2
10
VS
8
4
NC
3
NC
9
24V
C8
10uF/35V
F12
ICP-N38
ICP-N38
R162
100K
100K
R163
100K
100K
R167
10K
R168
10K
10K
Q8
2SA1680
1SS133
D6
C169
0.047uF/50V
C163
0.047uF/50V
0.047uF/50V
R169
10K
R155
10K
10K
IC11
TA7291P
1SS133
GND
Vref
OUT2
OUT1
IN2
IN1
VCC
C9
10uF/16V
R170
47K
47K
R164
47K
47K
LUM-
LUM+
43
42
DCCON 64
P35
PE3
PE2
R140
47K
47K
Q9
DTC114EK
24V
C1
10uF/35V
F3
ICP-N38
ICP-N38
D1
1SS133
Q3
2SA1680
R130
100K
100K
R131
100K
100K
R136
100K
R137
100K
100K
C133
0.047uF/50V
C114
0.047uF/50V
0.047uF/50V
R115
10K
10K
R138
10K
IC5
TA7291P
GND
Vref
OUT2
OUT1
IN2
IN1
VCC
C2
10uF/16V
R139
47K
47K
R132
47K
47K
CPU(IC8)
OFM-
OFM+ 45
46
PE5
PE4
Q4
DTC114EK
OFMD-
OFMD+
OFM
LUMD-
LUMD+
LUM
10k
10k
10k
10k
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