AR-FN5 (serv.man3). Maintenance Troubleshooting Circuti descriptions - Sharp Copying Equipment Service Manual (repair manual). Page 10

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.

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.

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.

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.

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

 70
 71

102

5V

24V

5V

24V

24V

24V

1

O1

2

I1

3

4
5

I2

6

O2

7

8

9

O3

10

I3

11
12
13

I4

14

O4

15

16

1

O1

2

I1

3

4
5

I2

6

O2

7

8

9

O3

10

I3

11
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

P62
P63

P51
P53

P52
P50

Stop excitement
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