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AR-SP5  AR-SP5  3 - 5

1) Remove the harness.

2) Remove four screws.

3) Remove the drive unit.

4) Remove the belt.

5) Remove two screws.

6) Remove the SPF motor.

1) Loosen the screw.

2) Open the paper exit paper guide.

3) Remove the paper entry sensor.

4) Remove the harness.

1) Remove the parts.

2) Remove the paper supply roller.

1) Remove the parts.

2) Remove the paper exit roller.

AR-SP5  AR-D16  4 - 1

1) Remove the screw.

2) Remove the rear cover.

*  When installing, engage the pawl and install the unit.

1) Open the right cabinet.

2) Remove three screws.

3) Remove one connector from MCU.

4) While tilting down the 2nd connection arm A, pull and remove the

paper feed unit toward you.

* When installing, securely insert two bosses C on the machine side

and two bosses D on the paper feed unit side. Be sure to secure the
ground wire B.

* Insert the 2nd page feed.

1) Remove the pawl.

2) Remove the paper sensor.

3) Remove the harness.

No.

Part name Ref.

A

Paper sensor

B

Cassette detection SW

C

Paper feed solenoid

D

Transport roller

E

Paper feed clutch

F

2nd paper feed roller

AR-SP5  AR-D16  4 - 2

1) Remove the pawl.

2) Remove the cassette detection switch.

3) Remove the harness.

1) Remove the screw.

2) Remove the connector.

3) Remove the paper feed solenoid.

1) Remove two E-rings.

2) Remove the transport roller.

* Install so that the earth spring A is brought into contact over bearing

B.

1) Remove the E-ring.

2) Remove the paper feed clutch.

3) Remove the parts.

* When installing, fit the cut surface A.

1) Remove the E-ring and the parts.

2) Remove the 2nd paper feed roller.

* When installing, hang the 2nd connection arm on the 2nd

connection arm Spring B. Be sure to install so that the earth spring
C is in contact under the bearing D.

AR-SP5  AR-PG2  5 - 1

The I/F circuit is composed of the USB driver and the IEEE1284 driver,
and performs hard interface with the ASIC (MCU PWB).

With the USB driver, the differential signals (analog) of USB are
converted into digital signal, which are sent to the ASIC. In the reverse
procedure, interface between the ASIC (engine) and the host is
performed.

The IEEE1284 driver is used to perform interface between the ASIC
(engine) and the host.

This printer uses a bi-directional parallel interface. Use the supplied
interface cable.

36-pin DDK 57LE-40360-730B (D29) female connector or equivalent
connector

Shielded type bi-directional parallel interface

For best results,, use a printer interface cable which is IEEE1284
compliant.

The pin numbers and signal names are listed in the following table.

4-pin DDK DUSB-BRA42-T11
Type-B connector

Shielded twisted pair cable
(2 m (6 feet) Max.: high-speed transmission equivalent)

The pin numbers and signal names are listed  in the following table.

USB driver
IC401

USB  

connector

 

D -

D+

OE, RCV, VP, VM
Suspend, VMO
VPO

 

 

 

ASIC

Centronics 

connector 

IEEE1284  

driver  

 

IC403  

ASIC

1

18

36

19

Pin 

No.

Signal name

Pin 

No.

Signal name

1

STB

19

GND (STB RET)

2

DATA1

20

GND (DATA1 RET)

3

DATA2

21

GND (DATA2 RET)

4

DATA3

22

GND (DATA3 RET)

5

DATA4

23

GND (DATA4 RET)

6

DATA5

24

GND (DATA5 RET)

7

DATA6

25

GND (DATA6 RET)

8

DATA7

26

GND (DATA7 RET)

9

DATA8

27

GND (DATA8 RET)

10

ACKNLG

28

GND (ACKNLG RET)

11

BUSY

29

GND (BUSY RET)

12

PE (Paper End)

30

GND (PE RET)

13

SLTC

31

INPRM

14

AUTO LF

32

FAULT

15

(NC)

33

(NC)

16

GND (0 V)

34

(NC)

17

FG

35

+5 V

18

+5 V

36

SLTC IN

Pin No.

Signal name

1

+5V

2

–DATA

3

+DATA

4

GND

1

2

3

4