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MX-B382/B402  MX-B382/B402 (MAIN UNIT)  1 – 1

MX-B402

Service Manual

 

Before installing the machine, check that the following installing
(use) conditions are satisfied.
If the installing (use) conditions are not satisfied, the machine may
have performance issues resulting in errors. It may also cause
safety problems. Ensure there is room to move the product in and
arrange the installing (use) conditions before setting up the
machine.

For installation of a large size machine, be sure to check that the
door size is wide enough before bringing in.

The following space must be provided around the machine in order
to assure machine performances and proper operations.
If any option is installed, provide the additional space for installing
it.
There must be sufficient space for ventilation at the rear of the
machine to avoid malfunction from heat and dust.

If the power specifications are not satisfied, the machine cannot
exhibit full performances and may cause safety trouble.
Strictly observe the following specifications.

Check that the following power capacity is satisfied. If not satisfied,
an addition power source will need to be supplied.
Current capacity
Japan (100V): 15A
100V (100 - 127V): 12A
200V (220 - 240V): 8A

Measure the voltage during copying to check that the voltage is in
the range of the specified voltage 

10%.

If the voltage is outside the specified range, use thicker lead wires
to reduce impedance.
(An electrical work is required.)
Use of a step-up transformer is also available. The step up trans-
former must have a great capacity then the maximum power con-
sumption of the machine.

The frequency must be within the range of the specified frequency
2%. If power waveform is deformed, a trouble may occur.

Make certain the machine is properly grounded at the outlet.
Grounding (earth connection) must be performed before inserting
the power plug into the power outlet.
When disconnecting the earth connection, be sure to disconnect
the power plug from the power outlet in advance.

Check the style of the power plug. If the shape does not match, do
not use it.

This machine is considerably heavy and becomes heavier with an
option installed.
The floor must be strong enough for assuring safety.
If the unit is not level, the toner density control is not performed nor-
mally, degrading the copy quality.
Color shift or image distortion may also result.

This machine is designed to perform properly under the specified
temperature and humidity. If the temperature and humidity exceeds
the specified range, the machine may not operate properly and or
cause equipment failure.
Especially when the humidity is too high, paper absorbs moisture to
cause a paper jam or dirty copy.
Do not install the machine near a heater, a cooler, or a humidifier.

Condensation may formed inside the machine and cause trouble.
Make sure the machine is properly ventilated.

• Working environment

Temperature: 10 to 35

C

Humidity: 20 to 85% RH
Atmospheric pressure: 590 to 1013hPa (altitude: 0 to 2000 m)

1

Transporting product

2

Installing space

3

Power source (Capacity, fluctuation, safety)

4

Floor strength

5

Direct rays of the sun, dust, temperature, humidity, gases, 
chemicals

11-13/16”
(30cm)

11-13/16”
(30cm)

17-23/23”
(45cm)

85%

Humidity㧔RH㧕

60%

20%

MX-B382/B402  MX-B382/B402 (MAIN UNIT)  1 – 2

If dust enters the machine, it may cause dirty copy and a paper
jam, resulting in a shortened lifetime.

If the machine is installed under the rays of the sun, the exterior of
the machine may be discolored and abnormal copies may be pro-
duced.

Do not install the machine at a place where there are gases and
chemicals. Especially be careful to avoid installation near a diazo-
type copier, which produces ammonium gas.
Copy quality may be adversely affected and trouble may occur.

Avoid installation near a machine which produces vibrations.
If vibrations are applied to the copier machine, copy images may be
deflected and trouble may occur.

It is recommendable to use a forklift for bringing in the machine for
safety.
If no forklift is available, man-power of two persons is required. The
machine is considerably heavy, and requires safety precautions for
delivery and installation.
Machine transport must be made in a packed condition to the
installation site.
Since the hard disk drive is built in the machine, use care not to
exert vibrations or shocks to the machine when in transit.

Remove the packing materials prior to installation in the office envi-
ronment.

1)

Remove the PP band.

2)

Remove the top case.

3)

Remove the parts included in the package.

1

Implements, facility, 
and man power

Use a forklift. (If no forklift is available, 
manpower of two persons is required.) 

2

Delivery

Transit must be made in packed condition.

MX-B382/B402  MX-B382/B402 (MAIN UNIT)  1 – 3

4)

Remove the carton.

5)

Remove the parts included in the package.

6)

Remove the main unit from the bottom padding, and remove
the polyethylene bag.

1)

Check that all the parts are in the package.

After completion of installation, check to confirm that the ROM ver-
sion is the latest one. If not, upgrade the firmware to the latest ver-
sion.

1)

Open the right door.

2)

Lower the pressure release levers to apply more pressure. 

NOTE:
For North America, the power 
cable is attached vertically to 
the machine.

1

Developer

Other than North America: 1 piece

2

Waste toner box

1

3

AC  cord

1

4

Operation Manual

1 set

5

Operation Manual pocket

Yes

6

Toner cartridge

Other than North America: 1 piece

1

2

4

5

6

3

MX-B382/B402  MX-B382/B402 (MAIN UNIT)  1 – 4

1)

Open the front cover.

2)

Turn the lock lever until it stops to release the lock, and
remove the waste toner box.

3)

Turn the lock lever to the horizontal position to release the
lock, and open the drum positioning plate unit.

4)

Open the lock cover of the developing unit.

5)

Hold the handle of the developer unit and straight.
* Be careful not to put fingerprints or oil dirt on the roller sur-

face.
Do not hold the case adjacent to the DV roller strongly.

6)

Remove the DV cover.
Raise the two levers. Hold the knob, and remove the cover.