AR-FN5 (serv.man3). Maintenance Troubleshooting Circuti descriptions - Sharp Copying Equipment Service Manual (repair manual). Page 13

The control signal sent from the CPU is passed through the transistor
array TD62504 (IC106) to the H driver circuit which is composed of
large-current drive transistors (Q6, 7, 10, 11), driving the staple motor.

The staple unit can staple max. 30 pages of paper of 80g/m

2

. This unit

is composed of the drive DC motor (STM), the home position sensor
(STHP), the staple empty sensor (SNSW), the cartridge sensor
(/CASW), and the self-priming sensor (/SEPL) which detects that sta-
ples are at a staplable position.

5V

5V

5V

5V

D4

+

-

5

6

7

8

4

D5

I1

1

I2

2

I3

3

I4

4

I5

5

I6

6

I7

7
8

NC

9

O1

16

O2

15

O3

14

O4

13

O5

12

O6

11

O7

10

SW24V

F13

T1.25A/250V

Q6

2SB1258

Q10
2SB1258

R174
1K

R173
1K

R161

4.7K

R160

4.7K

R166

4.7K

R165

4.7K

IC106

TD62504F

COM-E

C178
10000pF/50V

1SS133

1SS133

R158

200

R159

1K

R157

200

R156

1K

STM-   41

STM+  40

PE0

PE1

CPU(IC8)

C167
10000pF/50V

Q11
2SD1785

Q7

2SD1785

D3

1SR124

D7
1SR124

STMD-

STMD+

STM

C184
0.1uF/25V

C185

0.1uF/25V

R145

3.9K

R143

100

R146
2.2K

NJM2903M

IC102B

C149
0.1uF/25V

R144

1.2K

C160
0.1uF/25V

C161
0.1uF/
25V

R10

0.22/2W