AR-RB1 (serv.man2). AR-RB1 Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 8

AR-RB1  DESCRIPTION OF OPERATION  4 - 1

• The operations include straight delivery, reverse tray delivery, reverse finisher delivery, and ADU delivery (when AR-D19 is installed) operations.

BIM (paper in-motor) changes the transport path of the fed paper when BGSOL (gate solenoid) straight delivery is ON and all other operations are
OFF.

• In the case of straight delivery, BPOD (paper discharge detect) detects the passing paper.

• In the case of reverse tray delivery operation, the paper-in motor and the upper reverse motor operates, the paper is fed, and BPPD1 is detected.

Afterward, the upper reverse motor stops, and the paper transport stops.
Next, the upper reverse motor rotates in reverse to transport paper to the direction of paper exit tray.
After BPOD (paper discharge detect) detects the passing paper, it turns off the upper reverse motor.

• In the case of reverse finisher delivery operation, the same as reverse tray delivery operation.

• In the case of ADU operation, the lower reverse motor operates, and the paper being transported to the reverse roller is detected by BPRD.

After being detected, the lower reverse motor stops, then it rotates in reverse, and the paper is transported to ADU.
After BPPD2 detects the passing paper, it turns off the motor.

BY drive PWB

Desk control PWB

Paper feed 
motor

Presence of 
paper in reverse 
section detected

27

29

+24V

+5V

31

GND

17

19

BRM/A

BRM/B

21

23

BPOWD

BTMA

25

BTMB

7

9

/BDD2

BFM

11

13

BIMA

BIMB

15

Vref1

1

3

/BPOD

/BPPD1

5

/BPRD

28

30

+24V

GND

32

/BYSET

18

20

BRMA

BRMB

22

24

BTM/A

BTM/B

26

+24V

8

10

BGSOL

BIM/A

12

14

BIM/B

BPOWD2

16

Vref2

2

4

/BPFD

/BPPD2

6

/BDD1

9

GND

8

7

/BPOD

+5V

6

5

GND

/BPFD

4

+5V

6

GND

5

4

/BPRD

+5V

3

2

GND

/BPPD2

1

+5V

CN-H (6pin)

CN-E (3pin)

CN-D (6pin)

CN-C (8pin)

CN-G (9pin)

CN-F (10pin)

CN-A (32pin)

CN-G (32pin)

CN-H (10pin)

1

2

5

3

4

6

BTM/B

+24V

+24V

BTMB

BTMA

BTM/A

1

2

5

3

4

6

BIM/B

+24V

+24V

BIMB

BIMA

BIM/A

1

2

5

3

4

6

BRM/B

+24V

+24V

BRMB

BRMA

BRM/A

1

2

3

+5V

/BPPD1

GND

1

2

3

1

2

3

1

2

+24V

/BGSOL

ADU

BTM

BPPD2

BPPD1

BGSOL

BPRD

BRM

BIM

BPOD

BPFD

Transport of
paper
detected

Upper turnover
motor

Lower turnover
motor

Transport of 
paper detected