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AR-M351U/M451U, AR-M355U/M455U  UNPACKING AND INSTALLATION  6 - 3

3) Remove the cushioning materials from the right and left of the

front side.

4) Remove the locking tape from the right and left sidesof the

tray.

Then, Remove the top of the carton and lower the plastic bag
covering the machine while the machine is still on the carton
base.

5) Remove the packing tape from the paper tray, pull out the

paper tray until it stops and remove it by tilting it upward.

6) One person must lift by the empty front tray pocket with the

right hand and steady the machine with the left hand placed at
the upper left of the machine.

The other person must lift with the right hand by using the lift-
ing recess in the rear of the machine and also steady the
machine with the left hand as shown in the illustration. 

Note: The center of gravity of the machine lies in the left side

when viewed from the Back of machine. When lifting the
machine, be careful not to drop it.

Note: In advance to installation of the machine, the paper feed

option units (AR-D27/AR-D28/AR-MU2) should have been

installed.

• Start installation after checking that the DATA and COMMUNI-

CATION indicators on the operation panel are neither lit nor
blinking.

Left adjuster: 1 pc.

Front mounting
 plates: 2 pcs.

Rear mounting
 plates: 2 pcs.

Screws (M4x6):

 4 pcs.

Left paper guides: 2 pcs.

Right paper guides: 2 pcs.

AR-M351U/M451U, AR-M355U/M455U  UNPACKING AND INSTALLATION  6 - 4

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

Turn the main switch located on the front side of the printer to
the "OFF" position.
Then remove the power plug from the outlet.

2) Attach the adjusters and adjust them.

<1> Insert the left adjusters to the stand/paper drawer.

<2> Turn the each adjusters to lower them until they touch the

floor.

∗

Be sure to attach the left adjuster to prevent overturning.

Caution: The lower tray cannot be pulled out unless the adjuster

is lowered to the specified position.

3) Put the main unit of the printer on the stand/paper drawer.

<1> Pull out the paper tray of the main unit until it stops and then

remove it by lifting both ends of the tray.

<2> Hold the main unit of the printer at the positions shown in the

illustration and put the main unit on the stand/paper drawer
so that the front side and the left side of the main unit are
aligned to those of the stand/paper drawer.

Caution: For installation of the main unit, it must be held by two

persons and installed without haste.

4) Connect the main unit to the stand/paper drawer.

<1> Attach the rear mounting plates using a supplied screw for

each.

Caution: Insert the rear mounting plates under the desk frame.

<2> Pull out the upper paper tray of the stand/paper drawer until it

stops and attach the front mounting plates using a supplied
screw for each.
Then, remove the lock of the paper tray and close the tray.

<3> Reattach the paper tray of the main unit.

5) Connect the power supply I/F harness to the PCU PWB of the

main unit of the printer.

<1> Remove the screw that fixes the harness cover of the main

unit of the printer and slide the harness cover up to remove it.
Process the harness cover as shown in the illustration.

 "OFF"

1

2

2

2

2

Rear mounting plate

Rear mounting plate

Screw

Screw

Desk frame

Rear
 mounting plate

Screw

Screw

Front
mounting plate

Front mounting
plate

Harness cover

Cut out.

Screw

AR-M351U/M451U, AR-M355U/M455U  UNPACKING AND INSTALLATION  6 - 5

<2> Connect the power supply I/F harness connector (red, 22pin)

to CN11 (red connector) of the PCU PWB of the main unit of
the printer.

Connect the connector (white, 4pin) of power supply I/F har-
ness to the I/F connector  (white, 4pin)  of the main unit.
Remove the M4 screw shown in the illustration, insert the cir-
cle terminal of ground harness, and it fixes again.

<3> Reattach the power supply I/F harness cover to its original

position and fix it with the removed screw.
At this time, ensure that the power supply I/F harness are
arranged as shown in the illustration.

• Fix the harness securely to the wire saddle.

6) Attach the paper guides to the lower tray (large capacity tray)

and set the size.
Refer to "Setting and adjustment" described later.

∗

If another peripheral device must be installed, carry out the fol-
lowing step at the end of the installation work.

7) Adjust the position of the paper guides of the upper paper tray

of the stand/paper drawer.
Refer to "Setting and adjustment" described later.

8) Carry out the off center adjustment.

• Start installation after checking that the DATA and COMMUNI-

CATION indicators on the operation panel are neither lit nor
blinking.

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

Turn the main switch located on the front side of the printer to
the "OFF" position.
Then remove the power plug from the outlet.

2) Attach the adjusters and adjust them.

<1> Insert the left adjusters to the stand/paper drawer.

<2> Turn the five adjusters to lower them until they touch the

floor.

∗

Be sure to attach the left adjuster to prevent overturning.

Caution: The lower tray cannot be pulled out unless the adjuster

is lowered to the specified position.

3) Put the main unit of the printer on the stand/paper drawer.

<1> Pull out the paper tray of the main unit until it stops and then

remove it by lifting both ends of the tray.

Connector

CN11

Wire saddle

Harness cover

Power supply
I/F harness

Screw

Wire saddle

Left adjuster: 1 pc.

Front mounting
 plates: 2 pcs.

Rear mounting
 plates: 2 pcs.

Screws (M4x6):

 4 pcs.

"OFF"

1

2

2

2

2

AR-M351U/M451U, AR-M355U/M455U  UNPACKING AND INSTALLATION  6 - 6

<2> Hold the main unit of the printer at the positions shown in the

illustration and put the main unit on the stand/paper drawer
so that the front side and the left side of the main unit are
aligned to those of the stand/paper drawer.

Caution: For installation of the main unit, it must be held by two

persons and installed without haste.

4) Connect the main unit to the stand/paper drawer.

<1> Attach the rear mounting plates using a supplied screw for

each.

Caution: Insert the rear mounting plates under the desk frame.

<2> Pull out the upper paper tray of the stand/paper drawer until it

stops and attach the front mounting plates using a supplied
screw for each.
Then, remove the lock of the paper tray and close the tray.
Remove the locks of the middle tray and the lower tray simi-
larly.

<3> Reattach the paper tray of the main unit.

5) Connect the power supply I/F harness to the PCU PWB of the

main unit of the printer.

<1> Remove the screw that fixes the harness cover of the main

unit of the printer and slide the harness cover up to remove it.
Process the harness cover as shown in the illustration.

<2> Connect the power supply I/F harness connector (red, 22pin)

to CN11 (red connector) of the PCU PWB of the main unit of
the printer.

Connect the connector (white, 4pin) of power supply I/F har-
ness to the I/F connector  (white, 4pin)  of the main unit.

Remove the M4 screw shown in the illustration, insert the cir-

cle terminal of ground harness, and it fixes again.

Rear mounting plate

Rear mounting plate

Screw

Screw

Desk frame

Mounting plate

Screw

Screw

Front
mounting plate

Front mounting
plate

Harness cover

Cut out.

Screw

Connector

CN11