Sharp AR-RB1 Service Manual

SERVICE MANUAL

CODE: 00ZARRB1//A1E

DIGITAL FULL COLOR COPIER/PRINTER/
MULTIFUNCTIONAL SYSTEM OPTION

DUPLEX BYPASS/INVERTER UNIT

MODEL

AR-RB1

CONTENTS

[1] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[2] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[3] INTERIOR CONSTRUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

[4] DESCRIPTION OF OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

[5] DISASSEMBLY, ASSEMBLY AND MAINTENANCE . . . . . . . . . . . 5-1

[6] ELECTRICAL SECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

PARTS GUIDE

Parts marked with “ ” are important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.

SHARP CORPORATION

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

AR-RB1 SPECIFICATIONS 1 - 1

[1] SPECIFICATIONS

1. Type

2. System

3. Paper size

4. Paper weight

5. Paper capacity

6. Paper feed transport speed

7. Paper feed speed

8. Power supply

9. Weight

10. Drive pattern

11. Outer dimensions

12. Power consumption

[2] UNPACKING AND

INSTALLATION

1. UNPACKING

Note: Never put the reverse bypass module down by the dotted sec-

tion on the floor. (The full actuator may be damaged.)

2. Installation

Before installation

• Start installation after checking that the DATA indicator on the oper­ation panel is neither lit nor blinking.

• For installation of AR-RB1, an optional stand (AR-D17/AR-D18/AR­D19) must have been installed.

• Ensure that the connecting plate located on the front side of the
optional stand and the connecting plates on the sides (one on the
right side and left side respectively) are securely attached.

Duplex bypass with paper delivery reverse

Straight path Face-up paper delivery
Reverse path Face-down delivery
Duplex bypass Reverse direction and delivery to duplex unit

A3W/A3/B4/A4/A4R/B5/B5R/A5/A6R/Custom
(12

×

18/11 × 17/8.5 × 14/8.5 × 13/8.5 × 11/8.5 × 11R/7.25 × 10.5R/

8.5

× 5.5/EXERA)

Face-up delivery 64 – 105g/m

2

, 106 – 300g/m

2

Face-down delivery/
ADU delivery

64 – 105g/m2, 106 – 200g/m

2

250 sheets
(conditions: A4/letter size recommended, face-down delivery)

58.5mm/s – 550mm/s
(speed based on signal commands from the copier)

Full color 26 sheets/min. (A4 landscape feed)
Monochrome 33 sheets/min. (A4 landscape feed)

5V, 24V supplied by the desk control PWB

6.5 kg

Paper feed, upper and lower turnover motors (stepping motors) and
drive PWB built-in

442.6 (W)

×

126.2 (D) × 431.8 (H) mm

24V: 1A/24W
5V: 0.1A/0.5W

Packing case

Spacer

Spacer

Accessories

Restraining tape
(remove)

Restraining tape (remove)

AR-RB1 UNPACKING AND INSTALLATION 2 - 2

Parts included

1. Turn off the main switch of the main unit.

1) Turn the main switch located on the left side of the main unit to the
"OFF" position.

2) Then remove the power plug of the main unit from the outlet.

2. Remove the actuator.

1) If the exit tray is installed to the main unit, remove it.

2) While holding the base of the exit actuator of the main unit with one
hand, pull the end of the actuator with the other hand to remove
the actuator.

3. Remove the paper output section covers.

1) Pull the centers of the two paper output section covers on the left
side of the main unit to remove them.

In the case of AR-D17/D18:

1) Pull the lock release lever on the left side of the main unit to pull
out the left cover until it stops.

2) Pull the upper part of the paper input section cover on the left side
of the optional stand to remove the paper input section cover.

Transport guide holder: 2 pcs.

Actuator: 1 pc.

Transport guide: 1 pc.

"OFF"

Exit actuator

Paper output
section covers

Lock release lever

Left cover

Paper input section cover

AR-RB1 UNPACKING AND INSTALLATION 2 - 3

4. Attach the duplex bypass/inverter unit to the main
unit.

1) Close the left cover.

2) Hold the duplex bypass/inverter unit as shown in the illustration

and hang the two positioning bosses at the upper part in the two
positioning holes on the left cover of the main unit.

At this time, check that the two positioning bosses are hung
securely in the two positioning holes of the main unit.

3) Ensure that there is no clearance between the main unit and the

duplex bypass.

5. Secure the duplex bypass/inverter unit.

1) Close the cover of the duplex bypass/inverter unit and tighten the

two built-in screws to secure the duplex bypass to the main unit.
At this time, take care not to damage the transport surface with the

tip of a screwdriver.

2) Close the cover of the duplex bypass/inverter unit and reattach the
exit tray that has been removed in step 2<1> in the raised position
as shown in the illustration.

3) Insert the supplied actuator into the duplex bypass.

6. Attach the transport guide.

1) Pull the lock release lever to pull out the left cover.

2) Insert the transport guide into the paper input section (upper
groove) of the stand.

Positioning bosses

Positioning holes

Transport surface

Actuator

Lock release lever

Transport guide

AR-RB1 UNPACKING AND INSTALLATION 2 - 4

3) Attach the transport guide to the duplex bypass/inverter unit and
insert the two transport guide holders into the two transport guides
respectively. At this time, ensure that the transport guide holders
are secured at the notch positions.

4) After checking that the transport guide is aligned with the guide of
the stand, close the left cover of the main unit securely.

7. Connect the harness of the duplex bypass/

inverter unit.

1) Remove the screw from the power supply cover on the rear side of
the optional stand and then remove the power supply cover.

2) Cut out the portion (indicated with H) of the removed power supply
cover shown in the illustration.

3) Connect the relay harness of the duplex bypass/inverter unit to the
connector of the optional stand.

Then, insert the snap band into the mounting hole shown in the
illustration to secure the relay harness.

4) Pass the relay harness through the cut out hole, hang the two
pawls of the power supply cover on the rear cabinet, and attach the
cover with the screw.

Installation of AR-RB1 is now complete.

Transport guide holders

Front side

Rear side

Transport guide holder

Transport guide holder

Transport guide

Transport guide

Front side

Rear side

Notch

Notch

Notches

Power supply cover

Screw

Cut-out portion

Snap band

Relay harness

Connector

Power supply cover

Pawls

Screw

Relay harness

AR-RB1 INTERIOR CONSTRUCTION 3 - 1

[3] INTERIOR CONSTRUCTION

Motors and solenoid

PWB and sensors

No. Name Abbreviation Function/operation

1 Paper feed motor BIM Transports paper to the paper feed section
2 Gate solenoid BGSOL Switches the gate for straight delivery and reverse delivery
3 Upper turnover motor BRM Paper transport in upper section
4 Lower turnover motor BTM Paper transport in lower section

No. Name Abbreviation Function/operation

1 Door open/closed detector 1 BDD1 Detects open/closed status of upper door
2 Paper delivery sensor BPOD Detects discharged paper
3 Full capacity detection sensor BPFD Detects full capacity status in paper tray
4 BY drive PWB BY drive PWB INVERTER drive and controller
5 Transport sensor 1 BPPD1 Detects transport of paper
6 Reverse section detection sensor BPRD Detects presence of paper in the reverse section
7 Transport sensor 1 BPPD2 Detects transport of paper
8 Door open/closed detector 2 BDD2 Detects open/closed status of lower door

1

2

3

4

1

2

3

4

6

5

7

8

AR-RB1 INTERIOR CONSTRUCTION 3 - 2

Cross-section diagram

No. Name Function/operation

1 Delivery roller Discharges paper to the tray, or transports paper to the finisher.
2 Idle roller Applies a pressure to the delivery roller to transport and discharge paper.
3 Idle roller Applies a pressure to the paper feed roller to transport paper.
4 Paper feed roller Transports paper being transported from the main unit to the paper-out and reverse bypass direction.
5 Upper reverse roller Transports paper to the paper-out and reverse bypass direction.
6 Upper transport roller Transports paper to the paper-out and reverse bypass direction.
7 Lower reverse roller Reverses paper and transports it to ADU.
8 Idle roller Applies a pressure to the lower reverse roller to transport paper.

9 Idle roller Applies a pressure to the lower transport roller to transport paper.
10 Idle roller Applies a pressure to the paper exit roller to transport paper.
11 Paper exit roller Transports paper to ADU.
12 Lower transport roller Transports paper to ADU.
13 Idle roller Applies a pressure to the upper transport roller to transport paper.
14 Idle roller Applies a pressure to the upper reverse roller to transport paper.

1

2

3

4

5

14

13

12

6

7
8

9

10

11

AR-RB1 DESCRIPTION OF OPERATION 4 - 1

[4] DESCRIPTION OF OPERATION

[Outline of operation]

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

[Sensor and solenoid operation]

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.

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

GND87/BPOD

+5V65GND

/BPFD4+5V6GND54/BPRD

+5V32GND

/BPPD21+5V

CN-H (6pin)

CN-E (3pin) CN-D (6pin) CN-C (8pin)

CN-G (9pin) CN-F (10pin)

CN-A (32pin)

BY drive PWB

Desk control PWB

CN-G (32pin)

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

23123

1
2

+24V
/BGSOL

ADU

BRM

BPPD2

BPPD1

BGSOL

BPRD

BTM

BIM

BPODBPFD

Paper feed motor

Upper turnover
motor

Transport of
paper
detected

Lower turnover
motor

Presence of
paper in reverse
section detected

Transport of
paper detected

AR-RB1 DESCRIPTION OF OPERATION 4 - 2

(1) Initial operation

When the power to the copier is turned on, in order to confirm whether
or not there is paper in the transport path, the paper input motor, upper
turnover motor and lower turnover motor revolve for a predetermined
time.

Even after the predetermined time has passed, if all the transport sen­sors are OFF and it is determined that there is no paper in the trans­port path, if within a given period of time at least one transport sensor
turned ON, it is interpreted as paper being present in the transport path
(paper jam).

(2) Straight delivery operation

In this operation, the paper discharged from the copier is sent directly
to the paper exit tray or transported to the finisher.

When the paper input motor and upper turnover motor revolve, the
paper input roller and delivery roller rotate in the directions as shown in
the figure below to discharge the paper.

If the paper is delivered to the finisher, it is transported at the same
speed at which it is discharged from the copier.

As the paper is discharged to the paper exit tray, when the trailing
edge reaches a point 50mm from the delivery roller on the copier side,
the speed of the delivery roller increases, and the paper is discharged
to the tray.

Unit: mm/s

Sensor input, motor output, solenoid output timing is as below.

Paper input motor

BPOD

BPPD1

BPRD

BPPD2

Upper turnover motor

Lower turnover motor

Paper kind

Copier process

speed

RB1 tray delivery

speed

Thick paper 2 58.5 58.5

Envelope 117 117
OHP (priority: quality) 58.5 120
OHP (priority: speed) 117 160

Paper input roller

Delivery roller

BPOD

(Paper exit sensor)

BIM

(Paper-in motor)

BRM

(Upper reverse motor)

Process speed

BGSOL

(Gate solenoid)

Delivery speed

(Direction of
paper-in)

(Direction of
paper-out)

AR-RB1 DESCRIPTION OF OPERATION 4 - 3

(3) Reverse tray delivery operation

A. When paper length is 249mm or less (letter size or less)

(Both the paper input motor and upper turnover motor operate)

The relation between the process speed and the transport speed in
RB1 is as follow.

Unit: mm/s

Sensor input, motor output, solenoid output timing is as below.

Processing speed

The paper input motor and
upper turnover motor are
caused to turn in time with the
copier processing speed, thus
transporting the paper.

When the trailing edge of the paper
reaches a point 13mm from the copier
POD off, the transport speed in RB1
is accelerated.

Trailing edge of paper reaches
point 13mm from POD off

Transport speed

(high speed)

Transport speed

(high speed)

Transport

speed

(low speed)

When the trailing edge of
the paper reaches the upper
reverse stop point, the
motor stops.

Motor stop

(paper stop)

Motor stop

(discharge complete)

The upper turnover motor is
caused to revolve in the paper
delivery direction, and the paper
is discharged.

When the trailing edge of the paper
reaches a point 50mm before the
delivery roller, the transport speed
decreases.

Trailing edge of paper

reaches point 50mm
before delivery roller

After the trailing edge of the paper
passes the delivery roller, the
upper turnover motor stops.

Paper kind

Copier

process

speed

RB1 transport

speed

(high speed)

Paper size

RB1 transport

speed

(low speed)

Normal paper 117/140 550 A3/A3W

/EXTRA

450

A4R 430

A4/B5/B5R 400

B4/A5 320

Thick paper 1 58.5 195 All size 195

POD

(Paper exit sensor)

BPPD1

(Transport sensor 1)

BPOD

(Paper-out sensor)

BIM

(Paper-in motor)

BRM

(Upper reverse motor)

BGSOL

(Gate solenoid)

(Direction of paper-out)

(Direction of paper-in)

Process speed

High speed

High speed

Low speed

AR-RB1 DESCRIPTION OF OPERATION 4 - 4

B. When the paper length is 250mm or more (B5R or more)

(The paper input motor, upper turnover motor and lower turnover motor all operate.)

As for the relation between the process speed and the transport speed
in RB1, refer to the table (3)-A.

Sensor input, motor output, solenoid output timing is as below.

Processing speed

The paper input motor and
upper turnover motor are
caused to turn in time with the
copier processing speed, thus
transporting the paper.

When the trailing edge of the paper
reaches a point 13mm from the copier
POD off, the transport speed in RB1
is accelerated.

Trailing edge of paper reaches
point 13mm from POD off

Transport speed

(high speed)

Transport speed

(high speed)

When the trailing edge of the
paper reaches the upper reverse
stop point, the upper turnover
motor and the lower turnover
motor stop.

Motor stop

(paper stop)

The upper turnover motor and the
lower turnover motor are caused to
revolve in the paper delivery direction,
and the paper is discharged.

The lower reverse motor stops at
BPPD1 off, when the trailing edge of the
paper reaches a point 50mm before the
delivery roller, the transport speed
decreases.

Trailing edge of paper

reaches point 50mm
before delivery roller

After the trailing edge of the paper
passes the delivery roller, the
upper turnover motor stops.

Transport

speed

(low speed)

Lower

turnover

motor stop

Motor stop

(discharge complete)

POD
(Paper exit
sensor)

BPPD1
(Transport
sensor 1)

BPRD
(Reverse section
detection sensor)

BPOD
(Paper-out sensor)

BIM
(Paper-in motor)

BRM
(Upper reverse
motor)

(Direction of paper-in)
(Direction of paper-out)

(Direction of paper-in)

(Direction of paper-out)

BTM
(Lower reverse
motor)

BGSOL
(Gate solenoid)

Process speed

Process speed

High speed

High speed

High speed

High speed

Low speed