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MX-4101N  MAINTENANCE  8 – 5

(Note for servicing the OPC drums)
1. Prevention of oily dirt attachment
[Note]
• Be careful not to attach fingerprints or oily dirt on the OPC drum

surface. (Keep the unit away from oils and dusts.)

• When replacing the OPC drum, cover the OPC drum with the

protection sheet and hold the protection sheet.
If it is required to hold the OPC drum directly, use enough care
not to touch the cleaning blade area, 5mm inside from both
edges of the OPC drum. (If a fingerprint or oily dirt is attached to
the cleaning blade area of the OPC drum, the cleaning blade
may be reversed.)

[Countermeasures]
If a fingerprint is attached to the OPC drum surface erroneously,
perform the following countermeasures.
1)

Use dry cloth to clean and remove the dirt.

2)

Apply stearic acid powder to prevent reverse rotation of the
cleaning blade.

[Check method]
Check to confirm that the OPC drum is free from fingerprints or oily
dirt and that the cleaning blade is completely cleaned by the follow-
ing method.
• Make a print of a half tone image on all the surface of A4 (11" x

8.5") paper, and check the printed paper for any abnormality in
the image.

2. Prior exposure prevention
[Note]
• Avoid servicing in a place where there is strong light.
• Do not expose the unit to light for a long time.
• Cover the OPC drum with light-blocking material. (When using

paper, use about 10 sheets of paper to block lights.)

[Countermeasures]
If the OPC drum is erroneously exposed to light too much (prior
exposure), perform the following countermeasures.
1)

Print half tone images on the whole surface of A4 (11" x 8.5")
paper, and check to confirm that there is no irregular density
area in the previously exposed section.

2)

Damages due to prior exposure may be recovered by keeping
the OPC drum for several hours. If, however, damages are not
recovered, replace the OPC drum.

1)

Open the front cover.

2)

Remove the waste toner box.
Maintenance: Check at every 150K. (Replace as necessary.)

3)

Remove the MC cleaner rod.

OPC DRUM

CLEANING BLADE

5mm

5mm

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MX-4101N  MAINTENANCE  8 – 6

4)

Insert the MC cleaner rod into the insertion port where the
cleaning guide label is attached, and clean the MC unit.
Maintenance: Clean at every call.

* Slide the rod back and forth 3 times to cleaning the MC unit.

If the improvement effect is not obtained, clean again.

5)

Remove the MC cleaner roller from the MC cleaner rod.
Maintenance: Replace at every 100K (color) or every 150K
(monochrome).

* Be careful to prevent against dirt of the MC cleaner roller.

(Prevent adhesion of the oils or the toner etc.)

6)

Check that the lock is released as shown in (A).
Loosen the blue screw, and open the drum positioning unit.
* When the lock is not released, use a screwdriver to turn the

screw (B) counterclockwise so that it is fit as (A).

7)

Open the DV lock lever, and release the fixing screw.
(1position for each color)

8)

Pinch the knob and remove the development unit.

9)

Hold the lock lever, and pull out each color drum unit slowly,
and support the lower section of the unit with hand to remove.

10) Remove the screws and remove the fixing shaft.

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MX-4101N  MAINTENANCE  8 – 7

11) Slide the OPC drum to the front side, and lift the drum rear

side, and remove the OPC drum from the hole in the front sec-
tion.
Maintenance: Replace at every 100K (color) or every 150K
(monochrome).

* When replacing, apply stearic acid powder to the OPC drum.

* Don't touch the OPC drum surface. (excluding the area of

within 5mm from the both ends)

* Even if it wrapped with black paper, don't apply a hard pres-

sure.

* Apply the stearic acid powder to the whole surface of the

OPC drum.

* Hold the both ends, rotate twice by hands in the direction

shown in the figure. (For adapting the drum to the cleaning
blade.)

12) Remove the C-ring, lift the hook slightly, and push the drum

shaft. Pull the drum shaft which extends to the opposite side
until it is caught, and rotate and remove the OPC drum.
* When installing the drum shaft to a new drum, keep the pro-

tection paper unremoved.

13) Remove the screw, and remove the cover.

14) Release the pawl, and remove the cover. Remove the MC unit.

Maintenance: Replace at every 100K (color) or every 150K
(monochrome).

NOTE: Attach the cover so that there is no float on the opposite

side of the pawl.

15) Remove the toner receiving seal.

Maintenance: Check at every 100K (color) or every 150K
(monochrome). (Replace as necessary.)

* When attaching, use alcohol to remove oil from the attached

surface, and fit with the reference.

Reference line

Reference
line

MX-4101N  MAINTENANCE  8 – 8

16) Remove the side seal F/R.

Maintenance: Check at every 100K (color) or every 150K
(monochrome). (Replace as necessary.)

* When attaching, use alcohol to remove oil from the attached

surface, and fit with the reference.

17) Remove the screw, and remove the DC holding plate and the

DCH lens.

18) Remove the screws, and remove the cleaner blade.

Maintenance: Replace at every 100K (color) or every 150K
(monochrome).

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