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AR-M550/M620  INSTALLATION MANUAL  (AR-M550/M620)  1 - 6

1) Open the front cabinet.

2) Loosen the blue screw of the process cover, and tilt down the pro-

cess cover toward you.

3) Loosen the blue screw which is fixing the developing unit.

4) While pressing the developing unit lock lever, pull out the develop-

ing unit.

Hold the strap of the developing unit and remove the developing
unit.

5) Remove the four fixing screws of toner hopper in the developing

unit.

6) While supplying developer from the developer supply port of the

developing unit, turn the MG gear clockwise with a plus screwdriver
to supply all developer to the developing unit.

7) Install the toner hopper to the developing unit.

8) Insert the developing unit to the main unit and fix it with the blue

screw.

9) Close the process cover and fix it with the blue screw.

1) Remove the toner cartridge from the box, and shake it several

times horizontally.

Note: Be sure to shake the toner cartridge horizontally.

Be careful not rotate as shown in the figure below.

2) Insert the toner cartridge into the  main unit insertion port as shown

below. In this case, do not turn the cartridge.

3) Insert the toner cartridge until it is locked.

2

1

AR-M550/M620  INSTALLATION MANUAL  (AR-M550/M620)  1 - 7

Insert the power plug into the power outlet, and turn on the power
switch of the main unit.

1) With the front cabinet open, enter the SIM 25-2 mode.

2) Close the front cabinet.

3) Press START key to execute the simulation. Toner is stirred for 3

minutes, and sampling of the toner density control sensor value is
repeated 16 times. The average level of the sensor detection level
is set (stored) as the reference toner density control value.

The tray 1 is for A4 or 8-1/2" x 11" paper, and the tray 2 is for A4 or B5
or 8-1/2" x 11" paper. (The factory setting of the tray 2 is B5.)

1) Pull out the tray 1 and the tray 2 until they stop.

2) Lift the paper guide, and supply paper to the tray 1.

After supplying paper, be sure to return the paper guide to the origi-
nal position.

3) Supply paper to the tray 2 similarly.

Note: Supply paper so that the paper quantity level does not exceed

the specified line.

4) Slowly insert the tray 1 and the tray 2.

The tray 3 is for 11" x 17" to 5-1/2" x 8-1/2"R size (A3 size to A5R) and
special paper, and the tray 4 is for 11" x 17" to 5-1/2" x 8-1/2"R size
(A3 size to A5R) paper.

(For the kinds of paper and special paper, refer to the specifications of
this manual.)

1) Pull out the tray 3 and the tray 4 until they stop.

2) Supply paper so that the specified line is not exceeded.

3) Slowly insert the tray 3 or the tray 4.

The manual paper feed tray is for 11" x 17" to 8-1/2" x 11"R size (A3
size to A5R)  and special paper.

(For the kinds of paper and special paper, refer to the specifications of
this manual.)

1) Open the manual paper feed tray.

Note: When setting 11" x 17", 8-1/2" x 14", 8-1/2" x 13", or 8-1/2" x

11"R (A3, B4, or A4R) paper, be sure to pull out the auxiliary
tray.

If it is not pulled out completely, the size of paper set on the
manual paper feed tray is not displayed properly.

Specified line

Specified line

AR-M550/M620  INSTALLATION MANUAL  (AR-M550/M620)  1 - 8

2) Set the manual paper feed guide to the set paper size.

3) Set the paper with print face up and insert until it makes contact

with the manual paper feed guide.

Note: If there is any gap between paper and the manual paper feed

guide, skew feed or wrinkles may be caused. Be sure to set
paper so that there is no gap between paper and the guide.

When changing the paper size of the tray 2 from B5 to A4, replace the
guide plate with the A4-exclusive regulation plate.

1) Remove the A4-exclusive regulation plate from the storage position

left inside of the machine. (It is fixed with a fixing screw under the
tab paper guide.)

2) Pull out the tray 1 and the tray 2.

3) Remove the B5 size regulation plate and the rear edge regulation

plates F and R from the tray 2.

When removing the B5 size regulation plate, slightly press the
paper feed base plate downward and press the hook under the reg-
ulation plate to remove.

4) Install the A4 size regulation plate.

5) Supply paper to the tray 2.

6) Push the tray 1 and the tray 2.

Note: Store the B5 size regulation plate and the rear edge regulation

plates F and R for future use.

Specified line

AR-M550/M620  INSTALLATION MANUAL  (AR-M550/M620)  1 - 9

1) Pull out the tray 3 or the tray 4.

2) Hold and slide the fixing knob (slide system) of the partition plates A

and B to fit with the size of paper to be supplied.

3) Supply paper into the tray.

4) Push the tray.

Note: Note that a certain special paper cannot be used for the tray 4.

To use the special paper, use the tray 3.

To use tab paper, install the exclusive-use guide to the tray 3.

Note that the tray 4 cannot be used.

1) Remove the exclusive-use guide from the storage position left

inside of the machine.

2) Pull out the tray 3.

3) Slide the partition plate to tab paper as shown in the figure below

and install it so that it covers the partition plate.

4) Supply tab paper with the print face up into the tray 3.

5) Push the tray 3.

Follow these steps to change the paper type setting when the paper
type has been changed in a paper tray. For the paper types that can be
used in each tray.

1) Press the [CUSTOM SETTINGS] key.

The custom setting menu screen will appear.

2) Touch the [TRAY SETTINGS] key.

The paper tray selection screen will appear.

3) Display the setting screen of the desired paper tray.

Touch the 

 key or 

 key to display the setting screen of the

desired paper tray.

Note: To automatically switch to a tray with the same size and type of

paper (if there is one) in the event that the paper tray runs out of
paper, display the last screen with the 

 key and select

[AUTO TRAY SWITCHING].

4) Touch the [TYPE / SIZE] key.

TRAY SETTINGS

TA

ORWARD

RINT

PRINTER

CONDITION

1/8

PLAIN / 8 x11

OK

PRINT

TRAY SETTINGS

TYPE / SIZE

CUSTOM SETTINGS

TRAY1

FAX

I-FAX

COPY

DOC. 

FILING

FIXED PAPER 

DISABLE DUPLEX

DISABLE STAPLE

DISABLE PUNCH

1 

/

 2

TYPE / SIZE

TRAY3

TRAY SETTINGS

PRINT

COPY

I-FAX

DOC. 

FILING

FAX

PLAIN / 8 x11

1 

/

 2