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MX-M753N  MX-SMX3  18 – 1

MX-M753N

Service Manual

 

1)

Turn the power switch located on the operation panel to the
"OFF" position.

2)

After checking that the operation panel has gone out, open the
front cabinet and turn the main power switch to the "OFF" posi-
tion.

3)

Remove the power plug of the main unit from the outlet.

• If cables are connected to the control PWB unit, remove all

1)

Remove the three screws from the right cabinet upper.

2)

Remove the right cabinet upper.

3)

Remove the four screws from the control PWB unit.
• If the fax box unit is installed, carry out steps 4), 5), and

4)

Pull out the control PWB unit and remove the snap band.

5)

Remove the interface cable from the frame.

6)

Remove the connector.

7)

Pull out and remove the control PWB unit.

1)

Install an expansion memory board to the DIMM1 slot of the
MFPC PWB.

1

Expansion memory board

1

1

OFF

DIMM1

DIMM2

MX-M753N  MX-SMX3  18 – 2

* Note for installation
a)

Insert the expansion memory board into the slot diago-
nally from above.

NOTE: When handling an expansion memory board, be 

careful not to touch the terminals.

NOTE: Avoid diagonal insertion of the expansion memory 

board for the slot.

NOTE: Do not push one end of the expansion memory 

board by one hand.

b)

Hold the both ends of the expansion memory board with
both hands, and put down the expansion memory so that
it is vertical to the PWB.
At that time, check to confirm that the hooks on the left
and the right sides of the slot are securely locked.

• If the fax box unit is installed, carry out steps 1) and 2).
1)

Pass the interface cable through the hole of the sheet metal of
the control PWB, connect it to the control PWB.

2)

Attach the snap band to the sheet metal of the control PWB
unit.

MX-M753N  MX-SMX3  18 – 3

3)

Push the control PWB unit into the main unit.

4)

Secure the unit with the four screws.

• If the fax box unit is installed, carry out step 5).

5)

Fit the interface cable into the right cabinet upper.

6)

Attach the right cabinet upper to the main unit.

7)

Secure the right cabinet upper with the three screws.

• Reconnect the cables that have been removed in step B to

1)

Insert the power plug of the main unit to the outlet.

2)

Turn on the main power switch.

3)

Turn on the power switch located on the operation panel.

ON

MX-M753N  AR-PF1  19 – 1

MX-M753N

Service Manual

 

1)

Turn the power switch located on the operation panel to the
"OFF" position.

2)

After checking that the operation panel has gone out, open the
front cabinet and turn the main power switch to the "OFF" posi-
tion.

3)

Remove the power plug of the main unit from the outlet.

• If cables are connected to the control PWB unit, remove all

1)

Remove the three screws from the right cabinet upper.

2)

Remove the right cabinet upper.

3)

Remove the four screws from the control PWB unit.
• If the fax box unit is installed, carry out steps 4), 5), and

4)

Pull out the control PWB unit and remove the snap band.

5)

Remove the interface cable from the frame.

6)

Remove the connector.

7)

Pull out and remove the control PWB unit.

Install the barcode font ROM PWB to the barcode connector.
* Check to confirm that the silver push lever extends out when the

PWB is installed.

1

CD-ROM

1

2

Operation Manual

1

AR-PF1 barcode font ROM PWB

1

2

OFF

PROG1
PROG2

FAX IMG EXT

PS KANJI

PCL/BARCODE