MX-FN19, MX-FN20, MX-PN12. All Sections - Sharp Copying Equipment Specification (repair manual). Page 15

MX-FN19  ADJUSTMENTS AND SETTINGS  3 – 2

To adjust the folding position, change the setting of bits from 6 to 8
of the DIPSW1 on the saddle stitcher controller PCB, and adjust
the folding position to the stitch position. (Adjust the paper position-
ing plate shift amount from the stitch position to the folding posi-
tion.)
If the saddle stitcher controller PCB is replaced, shift the setting of
the DIPSW1 on the old PCB to the new PCB. If the folding position
must be changed for some reason, this adjustment should be per-
formed.
1) Check to confirm that the power of the host machine is turned

OFF, and separate the finisher from the host machine. If the
optional punch module is installed, remove it from the finisher.

2) Remove the PCB cover, and set the bits from 1 to 4 of the

SW504 on the saddle stitcher controller PCB as shown below:

3) Remove the rear cover, and open the inlet cover of the saddle

stitcher. Then, fix the inlet cover sensor (FSINDD) and the inlet
door switch (FSINDSW) actuator with tape.

4) Put a mark on the top of the paper before paper feeding. Use

two sheets of A3 or LDR paper.

5) Turn ON the power of the host machine.
6) Press the SW1 of the saddle stitcher controller PCB. (When

LDR is used, keep pressing for 3 sec or more.) Then, the feed
motor (FSFM) starts running.

7) Feed two sheets of paper from the saddle inlet cover section.

Feed paper until the paper lead edge is in contact with the
paper positioning plate.

8) Close the inlet cover.
9) Press the SW1 of the saddle stitcher controller PCB.

* The saddle stitcher section stitches, folds, and discharges

paper automatically,

10) Measure the distance (L) between the stitch position and the

folding position. There are a "positive adjustment width" and a
"negative adjustment width" depending on the relations of the
stitch position and the folding position.
* If the stitch position is lower than the folding position, the

width is the "positive adjustment width."

* If the stitch position is higher than the folding position, the

width is the "negative adjustment width."

11) Change the setting of bits from 6 to 8 of the SW504 depending

on the clearance. Refer to the table below.
* When the adjustment width is 0:

Since the stitch position is aligned with the folding position,
the setting is not changed.

* In the case of a "positive adjustment width":

Subtract the distance from the value on the above figure,
and set the obtained value to SW504.
Example) If the current set value of the SW504 is +2 and the
clearance is +1mm newly, set the SW504 to -2.

* In the case of a "negative adjustment value":

Add the distance to the value on the above figure, and set
the obtained value to SW504. 
Example) When the current set value of the SW504 is -1 and
the distance is -0.5mm, newly set the SW504 to +1.

The following bits must not be set.

12) Set bits from 1 to 4 of the SW504 to OFF.

Do not change the

setting of bits from 5 to 8.

Mark

A3/LDR paper

Paper feed direction

OFF

ON

ON

+3

OFF

ON

OFF

+2

OFF

OFF

ON

+1

OFF

OFF

OFF

0

ON

OFF

ON

-1

ON

ON

OFF

-2

ON

ON

ON

-3

ON

OFF

OFF

Mark

Example of a positive

adjustment value

Unit: mm

Ex.) If L is 1mm, the width is "+1mm".

Folding position

Example of a negative

adjustment value

Mark

Stitch position

Folding position

Stitch position

Unit: mm

Ex.) If L is 0.5mm, the width is "-0.5mm".