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MX-M1100  ADJUSTMENTS  6 – 13

 

This adjustment is needed in the following situations:
* The scanner (reading) section has been disassembled.
* When a distortion is produced in copy and scan images.

 

Before execution of this procedure, remove the document table
glass.
1)

Loosen the screw which is fixing the scanner unit A and the
drive wire, and remove the scanner unit A from the drive wire.

2)

Manually turn the scanner drive pulley, to move the scanner
unit B until it is in contact with the stopper. 
If the scanner unit B is in contact with the stoppers at the front
and the rear frames simultaneously, the parallelism of the
scanner unit B is proper. 

If this requirement is not met, do the following steps.

3)

Loosen the fixing screw of the pulley angle on the front frame
side of the scanner unit B. 

4)

Adjust the pulley angle position on the front frame side of the
scanner unit B so that the scanner unit B is in contact with the
stoppers on the front and the rear frames of the scanner unit B
simultaneously. 

5)

Fix the pulley angle on the front frame side of the scanner unit
B. 
If the adjustment result is unsatisfactory, perform the following
procedure.
Loosen the fixing screws of the scanner unit drive pulley on the
side of of the mirror assembly that does not contact the stop-
per.
Adjust so that the scanner unit B is in contact with the stoppers
on the front and the rear frames simultaneously when the
scanner unit drive pulley is manually turned without moving the
scanner unit drive shaft. (Change the relative position of the
scanner unit drive pulley and the drive shaft.) Fix the fixing
screws of the scanner unit drive pulley. 

6)

With the scanner unit B in contact with the stoppers simulta-
neously, fit the edge of the scanner unit A and the right edge of
the frame (top of the Mylar), and secure the scanner unit A
with the screw.

MX-M1100  ADJUSTMENTS  6 – 14

 

1)

Make a test chart (a rectangular pattern with four right angles)
on A3 (11 

✕ 17) paper as shown below. 

2)

Set the test chart made in the procedure 1) on the document
table so that the test charts is shifted toward you by 30mm
from the document set reference position. With the document
cover open, make a copy on A3 (11" 

✕ 17") paper. 

3)

Check for any distortion in the sub scanning direction.
If La = Lb, there is no distortion.

4)

If there is a distortion in the sub scanning direction, perform the
following procedure.
Loosen either one of the fixing screws of the scanner unit drive
pulley. (Either one in the front frame side or the rear frame side
will do.)

5)

Without moving the scanner unit drive shaft, manually turn the
scanner unit drive pulley to adjust the parallelism of the scan-
ner unit A and B. (Change the relative positions of the scanner
unit drive pulley and the drive shaft.)
Tighten the fixing screw of the scanner unit drive pulley.
Repeat the procedures of 2 thru 5 until the condition of proce-
dure 3) is satisfied.
If a distortion in the sub scanning direction cannot be removed
in the above procedures, perform “ADJ 4C Scan image overall
distortion adjustment.”

 

1)

Make a test chart (a rectangular pattern with four right angles)
on A3 (11 

✕ 17) paper as shown below.

L

L

L = 10m

L

L

La

Lb

L

L

L = 10mm

L

L

MX-M1100  ADJUSTMENTS  6 – 15

2)

Set the test chart made in the procedure 1) on the document
table, and make a copy on A3 (11” 

✕ 17”) paper. 

3)

Check for any distortion in the main scanning direction.
If the four angles of the copy image (rectangle) is right angles,
there is no distortion. (Work completed)

If there is any distortion in the main scanning direction, perform the
following procedures.
(Left side distortion adjustment)
1)

Turn the horizontal level adjustment screw of the CCD unit. 
(There are two adjustment screws in the front (A) and at the
back (B). Be sure to use only the screw in the front (A))
(When adjusting with the screw at the back (B), use a great
care for generation of shades of images.) 

If the left side inclines to the left: 
Turn the CCD unit horizontal adjustment screw (A) clockwise. 
(When adjusting the adjustment screw (B) on the front frame
side, turn the screw counterclockwise. When adjusting the
adjustment screw on the rear frame side, turn the screw coun-
terclockwise.)

If the left side inclines to the right: 
Turn the CCD unit horizontal adjustment screw (A)  clockwise. 
(When adjusting the adjustment screw (B) on the front frame
side, turn the screw clockwise. When adjusting the adjustment
screw on the rear frame side, turn the screw clockwise.)

2)

Make a copy of the distortion check test chart, and check for
any distortion on the left side.
Repeat the above procedures until the distortion on the left
side is minimized.
Variation 0.7/260mm, 0.5 revolution

(Right side distortion adjustment)
1)

Change the balance of the scanner rail height on the rear
frame side.

Remove the rear upper cabinet. Loosen the scanner rail fixing
screw (red screw) on the left side when viewed from the front
to change the height balance of the left and right sides of the
scanner rail. There are two fixing screws (red screws) of the
scanner rail. 
(NOTE) 
There is a scanner rail also on the front frame side, and it
height balance can be adjusted. However, it is not advisable to
adjust it because many parts must be removed for the adjust-
ment. 
When the right side inclines to the right:
Lift the level of the left side of the rear frame scanner rail. 
(When viewed from the rear frame side)

A

B

MX-M1100  ADJUSTMENTS  6 – 16

When the right side inclines to the left:
Lower the level of the left side of the rear frame scanner rail.
(When viewed from the rear frame side)

2)

Make a copy of the distortion check test chart, and check for
any distortion on the right side.
Repeat the above procedures until the distortion on the right
side is minimized.
Note:
The right side distortion adjustment and the left side distortion
adjustment affect each other. When, therefore, one of the
adjustments is performed, be sure to check the other distortion
and repeat the adjustment procedures until the both distortions
are minimized.

 

 

This adjustment is required in the following cases:
* When the DSPF section is disassembled.
* The DSPF unit has been replaced.
1)

Check the contact pressures between the four projections (2
on the front side and 2 on the rear side of the DSPF unit) and
the cover top and the glass surface of the document table of
the machine.

(Check procedure)
Insert paper between the projections of the DSPF unit and the
cover top and the glass surface of the document table, and pull
out the paper slowly. Feel and check to confirm that the resis-
tances at the four contacts are the same level.
Allowable range: Front frame side 0mm
                         Rear frame side 0 - 1mm
* Check the contact pressure with the unit from which the OC

mat is removed. 

If not, perform the following procedure. 

2)

Turn the DSPF unit level adjustment screw on the rear side of
the DSPF unit to adjust the horizontal level (front and rear, left
and right). 

Repeat the above procedures until a satisfactory result is obtained.

When the front frame side 
is higher and the rear 
frame side is lower

Turn the DSPF rear frame height adjustment 
screws R and L clockwise.

When the front frame side 
is lower and the rear frame 
side is higher

Turn the DSPF rear frame height adjustment 
screws R and L counterclockwise.

When the right side is 
higher and the left side is 
lower

Turn the DSPF rear frame height adjustment 
screw R counterclockwise.

When the right side is 
lower and the left side is 
higher

Turn the DSPF rear frame height adjustment 
screw L counterclockwise.