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MX-FNX6  REPLACEMENT AND ADJUSTMENT  4 – 7

6)

Lift the adjustment screw slightly upward, and let is fall by its
own weight. 

7)

Set the center binding staple unit, and close the front door. 

8)

Set A3 paper (any paper other than black background) on the
DSPF. 

9)

Set the staple position to the center binding. 
(Do not select the image edit.)

10) Press the copy start button, and perform center binding of one

set only. 

11) Draw an arrow mark on the paper discharged to the center

binding tray. 

12) Align the folded sides as shown below, and fold paper so that

the arrow comes inside. 
* Shift the upper side toward you by 2mm so that the paper

edge can be seen. 

13) Fix the aligned folded sides, and measure the shift quantity of

the top paper from the bottom paper. 

* Right side in the figure is [+] side, and the left side [–].

14) Open the front door of the finisher, and pull out the center bind-

ing staple unit. 

15) Open the open/close guide plate. 

16) Turn the adjustment screw according to the measured shift

quantity in the ratio of 0.1mm/1 scale. If the shift quantity is [+],
turn it clockwise. If the shift quantity is [–], turn it counterclock-
wise. 

17) Lift the adjustment screw upward, and let it fall by its own

weight. 

18) Securely tighten the fixing screw which was loosened.

* If there is virtually no shift, this adjustment is not required. 

(Basically no need to perform this adjustment in the market.)

1)

Set A3 paper (any paper other than black background) to the
DSPF. 

2)

Set the staple position to the center binding. 
(Do not select the image edit.)

3)

Press the copy start button, and perform center binding of one
set only. 

4)

Draw an arrow mark on the paper discharged to the center
binding tray. 

5)

Measure the shift quantity of the upper edge from the lower
edge at the center of the rear edge as shown below. 

* The right side on the figure is [–], and the left side is [+].

Open/close guide plate

Center binding
staple unit

Fixing screw

Adjustment
screw

2 mm

Shift

quantity

Fixing screw

Adjustment screw

Open/close
guide plate

Center binding
staple unit

MX-FNX6  REPLACEMENT AND ADJUSTMENT  4 – 8

6)

Turn on the main power switch. 

7)

Press [SYSTEM SETTING] key on the operation panel and log
in as the administrator. (Password: admin/default)

8)

Press [Administrator Adjustment] key and select [Option
Adjustment] on the administrator adjustment menu.

9)

Select [Finisher] from the option adjustment menu. 

10) Adjust the center folding position. (Select the paper size mea-

sured in the procedure 5.) 

11) After execution of the adjustment, repeat the procedures of 1) -

5). If there is no problem, terminate the adjustment.
If any more adjustment is required, repeat the procedures of 6)
- 10). 

1)

Remove the rear cover, and disconnect the connector of the
center binding staple unit. 
(Connector 6 positions, earth wire 1 position)

2)

Open the front door, and pull out the center binding staple unit. 

3)

Lift and remove the center binding staple unit from the finisher.
(4 screws)

4)

Hold the unit and remove the center folding unit. (Connector 6
positions, 4 screws)

5)

Install a new center folding unit. 
(Connector 6 positions, 4 screws)

Connector

Center folding unit

MX-FNX6  REPLACEMENT AND ADJUSTMENT  4 – 9

6)

Fit the rank seal on the back of the new folding unit, and set
the DIP switch of the main PWB again.

<Center folding stapler replacement and adjustment 
(MX-FNX7 only)>
* If there is a horizontal shift or a vertical shift in center folding,

perform the center folding shift adjustment in advance.

7)

Remove the guide plate.

8)

Remove the stay. (4 screws)

9)

Remove the plate. (4 screws)

10) Remove the cover (2 screws)

11) Remove the bracket. (Connector 2 positions, 4 screws)
12) Remove the stapler: upper from the bracket. 

(4 screws for each)

13) Remove the stapler: lower. 

(Connector 1 position for each, 2 screws)
Replacement and adjustment

14) Install a new stapler: upper to the bracket (4 screws for each),

and set the jig included in the package to the back side. 

15) Install the bracket. (Connector 2 positions, 4 screws)
16) Install the new stapler: lower, and fix it temporarily. 

(Connector 1 position for each, 4 screws)

17) Turn the staple motor gear with fingers to extend the stapler

hammer to the maximum.

18) With the staple hammer stored in the jig hole and the stapler:

upper pushed in, tighten two fixing screws of the stapler: lower.

Main PWB DIP switch

Rank seal on the back
of the folding unit

Guide plate

Stay

Plate

Cover

Cover

MX-FNX6  REPLACEMENT AND ADJUSTMENT  4 – 10

19) Turn the staple motor gear to move down the hammer, and

remove the jig. 

* If there is virtually no shift, this adjustment is not required. (Basically this adjustment is not performed in the market.)
When executing the horizontal resist adjustment, remove and shift the screw which fixes the horizontal resist reference bracket and turn the ref-
erence bracket 90 degrees. Then the whole connection bracket can be slid horizontally.

* There is a marking of 2mm pitch in the fixing section on the left upper side of the connection bracket. The bracket can be shifted by max.

±5mm.

a. When paper is on the front side:
Slide the connection bracket to the front side, and shift the center binding unit to the front side.
b. When paper is on the back side:
Slide the connection bracket to the back side, and shift the center binding unit to the back side.

Staple motor gear

Staple hammer

Stapler: lower

Bracket

Stapler: upper

Back side of Stapler:
upper

Jig

Main unit side

Integrated-type connection bracket

Slide

Normal position of the
horizontal resist reference bracket

Loosen the screw and shift

Rotate the bracket
90 degrees.