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AR-M256/M257/M258/M316/M317/M318/5625/5631  NOTE FOR SERVICING 1 - 1

This Service Manual uses some photographs to assure safe operation.
Please understand the meanings of photographs before servicing.

1) Be sure to connect the power cord only to a power outlet that

meets the specified voltage and current requirements.

Avoid complex wiring, which may lead to a fire or an electric shock.

2) If there is any abnormality such as smoke or an abnormal smell,

interrupt the job and disconnect the power plug. 

It may cause a fire or an electric shock.

3) Be sure the machine is properly grounded. Failure to ground the

machine properly may result in an electric shock or fire.

To protect the machine and the power unit from lightening, ground-
ing must be made.

4) When connecting the ground wire, never connect it to the following

points as it may cause an explosion, fire, or an electric shock:

• Gas tube

• Lightning conductor

• A water pipe or a water faucet, which is not recognized as a

grounding object by the authorities. 

• Grounding wire for telephone line

5) Do not damage, break, or stress the power cord. Do not put heavy

objects on the power cord. Do not bend or pull the cord forcefully. It
may cause a fire or electric shock.

6) Keep the power cable away from a heat source.

Do not insert the power plug with dust on it into a power outlet.

It may cause a fire or an electric shock.

7) Do not put a receptacle with water in it or a metal piece which may

drop inside the machine.

It may cause a fire or an electric shock.

8) Do not touch the power plug, insert a telephone jack, perform ser-

vice or operate the machine with wet or oil hands. It may cause an
electric shock.

1) When servicing, disconnect the power plug, the printer cable, the

network cable, and the telephone line from the machine, except
when performing the communication test, etc.

It may cause an injury or an electric shock.

2) There is a high temperature area inside the machine. Use extreme

care when servicing.

3) There is a high voltage section inside the machine which may

cause an electric shock . Be careful when servicing.

4) Do not disassemble the laser unit. Do not insert a reflective mate-

rial such as a screwdriver in the laser beam path.

It may damage eyes by reflection of laser beams.

5) When servicing the machine while operating, be careful not to

make contact with chains, belts, gear, and any other moving parts.

6) Do not leave the machine with the cabinet disassembled.

Do not allow any  person other than a serviceman to touch inside
the machine. It may cause an electric shock, a burn, or an injury. 

7) When servicing, do not breathe toner, developer, and ink exces-

sively. Do not get them in the eyes. 

If toner, developer, or ink enters you eyes, wash it away with water
immediately, and consult a doctor if necessary.

8) The machine  has got sharp edges inside. Be careful not to dam-

age fingers when servicing.

9) Do not throw toner or a toner cartridge in a fire. Otherwise, toner

may pop and burn you.

10) When replacing the lithium battery on the PWB, use only the spec-

ified battery. If a battery of different specification is used, it may not
be compatible and cause breakdown or malfunction of the
machine. 

11) When carrying an electric unit or a PWB, use an anti-static (elec-

tricity) bag. Failure to do so may cause component failure or
machine malfunction.

Do not install the machine at the following sites.

1) Place of high temperature, high humidity, low temperature, low

humidity, place under an extreme change in temperature and
humidity.

Paper may get damp and form dews inside the machine, causing
paper jam or copy dirt. 

For operating and storing conditions, refer to the specifications
described later. 

2) Place of much vibrations

It may cause a breakdown.

3) Poorly ventilated place

An electro-static type copier will produce ozone inside it.

The quantity of ozone produced is designed to a low level so as
not to affect human bodies. However, continuous use of such a
machine may produce a smell of ozone. Install the machine in a
well ventilated place, and ventilate occasionally. 

4) Place of direct sunlight.

Plastic parts and ink may be deformed, discolored, or may undergo
qualitative change.

It may cause a breakdown or copy dirt.

5) Place which is full of organic gases such as ammonium

The organic photoconductor (OPC) drum used in the machine may
undergo qualitative change due to organic gases such as ammo-
nium.

Installation of this machine near a diazo-type copier may result in
dirt copy.

6) Place of much dust

When dusts enter the machine, it may cause a breakdown or copy
dirt. 

7) Place near a wall

Some machine require intake and exhaust of air.

If intake and exhaust of air are not properly performed, copy dirt or
a breakdown may be resulted. 

8) Unstable or slant surface

If the machine drops or fall down, it may cause an injury or a break-
down. 

If there are optional paper desk and the copier desk specified, it is
recommendable to use them.

When using the optional desk, be sure to fix the adjuster and lock
the casters. 

 

WARNING: If this WARNING should be ignored, a serious danger 

to life or a serious injury may result.

CAUTION:

If this CAUTION should be ignored, injury or damage 
to property could result.

AR-M256/M257/M258/M316/M317/M318/5625/5631  CONFIGURATION  2 - 1

Paper feed unit (500 Seets) 

[AR-D30]

Paper feed unit (500

c2 Seets) 

[AR-D31]

Finisher 

[AR-FN5A]

Saddle stitch finisher 

[AR-F14N]

Staple cartridge 

[AR-SC2]

Staple cartridge 

[AR-SC1]

Punch unit 

[AR-PN1A/B/C/D]

Reversing single pass feeder 

[AR-RP7]

Document cover 

[AR-VR6]

[AR-M257/M317]

[RSPF]

[AR-P27]

Printer expantion kit (PCL)

Expantion memory board

PS3 expantion kit

Network scanner 

expantion kit

Sharpdesk 

license kit

Application integration 

module kit

[AR-SM5](256MB)
[AR-SM6](512MB)

FAX expantion kit

Data security kit

FAX memory (8MB)

[AR-FX7]

[AR-PF1]

[AR-PF2]

[AR-MM9]

[AR-PK1N]

[MX-NSX1]

[MX-USX1/ 

MX-USX5/ 

MX-US10/ 
MX-US50/ 

MX-USA0]

[MX-AMX1]

[AR-FR24] 

(For 25cpm)

[AR-FR25] 

(For 31cpm)

[AR-FR24U] 

(For 25cpm)

[AR-FR25U] 

(For 31cpm)

Copier/Printer (SPLC) model

Copier/Printer (SPLC) model

[AR-M258/M318]

Copier/Printer (PCL)
Network model

[AR-M256/M316] 

[AR-5625/5631]

[AR-M256/M316/M257/M317/M258/M318]

[AR-M256/M316/M257/M317]

Job separator tray 

[AR-TR3]

Barcode font kit

Flash ROM kit

[Authentication 

version]

[Commercial 

version]

AR-M256/M257/M258/M316/M317/M318/5625/5631  CONFIGURATION  2 - 2

F : Installable
✕: Not available

Section

Option

Main unit Model

Note

Item

Model

AR-M256/

M316

AR-M257/

M317

AR-M258/

M318

AR-5625/

5631

Automatic document 
feeder and OC

Document feeder

AR-RP7

F

Standard

F

F

Document cover

AR-VR6

F

✕

F

F

Paper feed system

Paper feed unit (500 sheets)

AR-D30

F

F

F

F

500 x 1 (80g/m

2

)

Paper feed unit 
(500 x 2 sheets)

AR-D31

F

F

F

F

500 x 2 (80g/m

2

)

Paper exit system

Job separator tray

AR-TR3

F

F

F

F

Finisher

AR-FN5A

F

F

F

F

Staple cartridge

AR-SC1

F

F

F

F

For AR-FN5A

Saddle stitch finisher

AR-F14N

F

F

F

F

Staple cartridge

AR-SC2

F

F

F

F

For AR-F14N

Punch unit

AR-PN1A

F

F

F

F

AR-PN1B

F

F

F

F

AR-PN1C

F

F

F

F

AR-PN1D

F

F

F

F

FAX system

FAX expansion kit

AR-FX7

F

F

F

F

FAX memory (8MB)

AR-MM9

F

F

F

F

Printer system

Printer expansion kit (PCL)

AR-P27

F

F

Standard 

✕

Bar code font kit

AR-PF1

F

F

F

✕

AR-P27 must be installed. 

Flash ROM kit

AR-PF2

F

F

F

✕

PS3 expansion kit

AR-PK1N

F

F

F

✕

Memory board

256MB expansion memory 
board

AR-SM5

F

F

F

F

512MB expansion memory 
board

AR-SM6

F

F

F

F

Software

Network scanner expansion 
kit

MX-NSX1

F

F

F

✕

AR-P27 must be installed. 

Sharpdesk 1 license kit

MX-USX1

F

F

F

✕

Sharpdesk 5 license kit

MX-USX5

F

F

F

✕

Sharpdesk 10 license kit

MX-US10

F

F

F

✕

Sharpdesk 50 license kit

MX-US50

F

F

F

✕

Sharpdesk 100 license kit

MX-USA0

F

F

F

✕

Application integration 
module kit

MX-AMX1

F

F

F

✕

AR-P27 must be installed.

Data security

Data security kit 
(Commercial version)

AR-FR24U

F

F

F

F

For 25cpm

AR-FR25U

F

F

F

F

For 31cpm

Data security kit
(Authentication version)

AR-FR24

F

F

F

F

For 25cpm

AR-FR25

F

F

F

F

For 31cpm

AR-M256/M257/M258/M316/M317/M318/5625/5631  SPECIFICATIONS  3 - 1

∗

Measurement conditions: 
When paper of A4/ 8.5 x 11 is fed from the main unit tray, the poly-
gon motor is rotating.

∗

S to S: A4/ 8.5 x 11 documents 11 sheets, copy 1 sets 

(First copy is not included.)

Monochrome scan resolution: 600 x 600dpi (Default)

∗

Same speed for Normal/ Enlargement/ Reduction.

Machine Type

Desktop type

Floor to OC top 
surface

623 (W) x 615 (D) x 640.5 (H)mm
(24.5 (W) x 24.2 (D) x 25.2 (H) inch)

Floor to Glass 
surface

623 (W) x 615 (D) x 665 (H)mm
(24.5 (W) x 24.2 (D) x 26.2 (H) inch)

Floor to RSPF 
surface

623 (W) x 615 (D) x 786 (H)mm
(24.5 (W) x 24.2 (D) x 30.9 (H) inch)

AR-M256/ M258/ 
M316/ M318/ 5625/ 
5631

49.2 kg (with OC)

AR-M257/ M317

55 kg

Voltage

100V: 110V/ 120V to 127V 
200V: 220V to 240V

Frequency

50/ 60Hz common

Power switch

One power source

25 sheet model

31 sheet model

Warm-up time

23 sec. or less

25 sec. or less

Pre-heat function

Yes

About 10sec. 
However, the conditions for warming up of fusing and toner control 
are excluded. 
(Condition: Leaving the machine for 60 sec after opening the door, 
standard condition, polygon stop.)

Max. document size

A3 paper (11" × 17")

Picture quality mode

Density adjustment step

Toner save mode

Text Auto mode

1 step

Selectable

Text mode

5 steps

Selectable

Text/ Photo mode

5 steps

Selectable

Photo mode

5 steps

—

Copy magnification ratio

Magnification range/ fixed magnification

Zoom width

25 to 400% (50 to 200% for RSPF)

Fixed magnification 
mode

AB Series : 25, 50, 70, 81, 86, 100, 115, 

122, 141, 200, 400%

Inch Series: 25, 50, 64, 77, 100, 121, 129, 

200, 400%

Independent 
magnification width

25 to 400% for horizontal/ vertical
(50 to 200% for RSPF)

Magnification 
precision

Normal copy: 100%±1.0%
Enlargement copy: Set magnification ±1.0%
Reduction copy: Set magnification ±1.0%

Platen/ DSPF

AR-M256/ M257/ 

M258/ 5625

AR-M316/ M317/ 

M318/ 5631

Platen

Less than 4.8 sec.

Less than 4.8 sec.

RSPF

Less than 9.3 sec.

Less than 9.3 sec.

Engine

AR-M256/ M257/ 

M258/ 5625

AR-M316/ M317/ 

M318/ 5631

S to S

25 cpm (100%)

27 cpm (87%)

Document Size

AR-M256/ M257/ 

M258/ 5625

AR-M316/ M317/ 

M318/ 5631

A3

13

17

B4

15

20

A4

25

31

A4R

18

24

B5

25

31

B5R

20

24

A5

25

31

11" × 17"

13

17

8-1/ 2" × 14"

14

20

8-1/ 2" × 13"

15

20

8-1/ 2" × 11" 

25

31

8-1/ 2" × 11"R

18

24

5.5 × 8.5

25

31

999 sheets

Scan 
resol
ution 
(dpi)

Copy mode

Platen

400 × 600dpi

RSPF

400 × 600dpi

Input 
and 
send 
resol
ution 
(dpi)

Fax send mode

Select mode

Normal 

text

Fine 

text

Super 

fine test

Ultra 

fine text

Transmission 
resolution

203.2 × 

97.8

203.2 × 

195.6

203.2 × 

391

406.4 × 

391

Half tone

 × 

F

F

F

Scanner mode

Select mode

200 × 

200

300 × 

300

400 × 

400

600 × 

600

Input resolution: 
OC

600 × 

600

600 × 

600

600 × 

600

600 × 

600

Input resolution: 
RSPF

600 × 

367

600 × 

367

600 × 

367

600 × 

367

Transmission 
resolution

200 × 

200

300 × 

300

400 × 

400

600 × 

600