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MX-M905  ADJUSTMENTS  5 – 13

Lift the level of the left side of the rear frame scanner rail. 

(When viewed from the rear frame side)

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.

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.

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.

MX-M905  ADJUSTMENTS  5 – 14

 

This adjustment is required in the following cases:

* When the DSPF section is disassembled.

* When the DSPF unit is replaced.

* When there is a distortion (skew) on a front surface scan image

of the DSPF unit.

1)

Enter the Sim. 64-2 mode.

2)

Set the conditions as shown below:

The self print pattern 5 (grid pattern) of Sim. 64-2 is printed in the duplex print mode.

A

PRINT PATTERN (1 - 22, 53 - 58, 71 - 78)

Select of print pattern 
(For details, refer to the following)

1 -22, 53-58, 71-78

(1-22, 53-58, 71-78 Printable)

5

B

DOT1 (DOT1>=2 IF A: 2, 11)

Print dot number setting 
(Self print pattern: For m by n)

Pattern 2, 11: 2-255

Other than the above: 1-255

1

C

DOT2 (DOT2<=100 IF A: 59) 

Empty dot number setting 
(Self print pattern: For m by n)

Pattern 59: 0-100 

Other than the above: 0-255

254

D

DENSITY (FIXED "255" IF A: 9) 

Select of print gradation

Pattern 9: 255 fixed   

Other than the above: 1-255

255

E

RESOLUTION (DPI)

Select of resolution. (600DPI, 1200DPI)

0 (600DPI) -1 (1200DPI)

1

F

MULTI COUNT

Print quantity

1 - 999

1

G

EXPOSURE 
(2-8 IF A: 14-19) 

THROUGH

Select of exposure 
mode

No process (through)

Pattern 14-19: 2-8

Other than the above: 1-8

1

8 (STANDARD 

DITHER) 

CHAR/PIC

Text/Printed Photo

2

CHAR/PRPIC

Text/ Photograph

3

CHAR

Text

4

PRINT PIC

Printed Photo

5

PRINT PAPER

Photograph

6

MAP

Map

7

STANDARD DITHER

Dither without correction

8

H

PAPER

MFT

Select of paper feed 
tray

Manual paper feed

1-8

1

Select a paper feed 
tray with A3 (11 X 17) 
paper in it.

CS1

Cassette 1

2

CS2

Cassette 2

3

CS3

Cassette 3

4

CS4

Cassette 4

5

LCC1

LCC1

6

LCC2

LCC2

7

LCC3

LCC3

8

I

DUPLEX

YES

Select of duplex print

Yes

0-1

0

0

NO

No

1

J

PAPER TYPE

PLAIN

Select of paper type

Plain paper

1-4

1

1 (PLAIN) 

HEAVY

Heavy paper

2

OHP

OHP

3

ENVELOPE

Envelope

4

MX-M905  ADJUSTMENTS  5 – 15

3)

Select a paper feed tray with A3 (11 X 17) paper in it.

4)

Press [EXECUTE] button.

The grid pattern image is printed.

5)

Check to confirm that the printed grid pattern is virtually in par-
allel with the paper edges, and put the position marks A and B
on the front and the rear side of the front surface and the back
surface of paper.

6)

Make a copy of the adjustment pattern made in the above pro-
cedure on A3 (11 X 17) paper in the DSPF duplex mode, and
check for any image distortion  (skew). (Set the adjustment 
pattern so that the marked side is on the lead edge side.)

Check in one of the following methods:

Check to confirm that the right angle degrees of the print lines
in the main scanning direction are within 1.0mm with the paper
longitudinal direction print line as the reference. 

If the front surface copy image satisfies the above condition
the back surface copy image does not, go to "ADJ 5C DSPF
skew adjustment  (Back surface mode)."

If the front surface copy image does not satisfy the above con-
dition, perform the following procedure. 

7)

Loosen the hinge section screw, and lower two metal plates
which lock the DSPF.

Then the DSPF unit can be opened at an angle of 90 degrees.

8)

Open the DSPF unit, and loosen the hinge section fixing screw
on the right side of the DSPF unit.

9)

Turn the DSPF skew adjustment screw on the left side when
viewed from the rear frame to minimize the skew.

Repeat the procedures 6 thru 9 until a satisfactory result is
obtained. 

pass    

Paper   

direction

a

b

c

d

(Back side)

|c-d|

1 mm

(Front side)

|a-b|

1 mm

satisfied:

Condition  that should be 

satisfied:

Condition  that should be 

1

When the main scanning direction print line 
inclines to the left (Adjustment pattern a < b)

Turn the DSPF skew 
adjustment screw 
counterclockwise.

When the main scanning direction print line 
inclines to the right (Adjustment pattern a > b)

Turn the DSPF 
adjustment screw 
clockwise.

MX-M905  ADJUSTMENTS  5 – 16

 

This adjustment is required in the following cases:

* When the DSPF section is disassembled.

* When the DSPF unit is replaced.

* When there is a distortion  (skew) on the back surface scan 

image of the DSPF unit.

1)

Enter the Sim. 64-2 mode.

2)

Set the adjustment values as shown below.

The self print pattern 5 (Grid pattern) of Sim. 64-2 is printed in the duplex print mode.

3)

Select a paper feed tray with A3 (11 X 17) paper in it.

4)

Press [EXECUTE] button.

The grid pattern image is printed.

5)

Check to confirm that the printed grid pattern is virtually in par-
allel with the paper edges, and put the position marks A and B
on the front and the rear side of the front surface and the back
surface of paper.

A

PRINT PATTERN (1 - 22, 53 - 58, 71 - 78)

Select of print pattern 
(For details, refer to the following)

1 - 22, 53 - 58, 71 - 78

 (1 - 22, 53 - 58, 71 - 78 printable)

1

B

DOT1 (DOT1>=2  IF  A: 2, 11) 

Print dot number setting 
(Self print pattern: For m by n)

Pattern 2, 11: 2 - 255

Other than the above: 1 - 255

1

C

DOT2 (DOT2<=100 IF A: 59) 

Empty dot number setting 
(Self print pattern: For m by n)

Pattern 59: 0 - 100

Other than the above: 0 - 255

254

D

DENSITY (FIXED "255" IF A: 9) 

Select of print gradation

Pattern 9: 255 Fixed

Other than the above: 1 - 255

255

E

RESOLUTION (DPI)

Select of resolution. (600dpi, 1200dpi)

0 (600DPI) - 1 (1200DPI)

1

F

MULTI COUNT

Print quantity

1 - 999

1

G

EXPOSURE 
(2-8 IF A: 14-19) 

THROUGH

Select of exposure 
mode

No process (through)

Pattern 14 - 19: 2 - 8

Other than the above: 1 - 8

1

8 (STANDARD 

DITHER) 

CHAR/PIC

Text/Printed Photo

2

CHAR/PRPIC

Text/ Photograph

3

CHAR

Text

4

PRINT PIC

Printed Photo

5

PRINT PAPER

Photograph

6

MAP

Map

7

STANDARD 
DITCH

Dither without correction

8

H

PAPER

MFT

Paper feed tray 
selection

Manual paper feed

1 - 8

1

Select a paper feed 
tray with A3 (11 X 17) 
paper in it.

CS 1

Cassette 1

2

CS 2

Cassette 2

3

CS 3

Cassette 3

4

CS 4

Cassette 4

5

LCC1

LCC1

6

LCC2

LCC2

7

LCC3

LCC3

8

I

DUPLEX

YES

Select of duplex 
print

Yes

0 - 1

0

0

NO

No

1

J

PAPER TYPE

PLAIN

Select of paper type

Plain paper

1 - 4

1

1 (PLAIN) 

HEAVY

Heavy paper

2

OHP

OHP

3

ENVELOPE

Envelope

4

pass    

Paper   

direction