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MX-M1205  ADJUSTMENTS  5 – 37

 

 

This adjustment is needed in the following situations:

* When the scanner (reading) section is disassembled.

* When the scanner (reading) unit is replaced.

* When the LSU is replace or removed.

* When the resist roller section is disassembled.

* U2 trouble has occurred.

* The PCU PWB has been replaced.

* The EEPROM of the PCU PWB has been replaced.

* The scanner control PWB has been replaced.

* The EEPROM on the scanner control PWB has been replaced.

Before execution of this adjustment, the following adjustment must
have been completed:

* ADJ3A Print engine image distortion adjustment (LSU parallel-

ism adjustment)

* ADJ3B Print engine image magnification adjustment (Main scan-

ning direction)

* ADJ3C Print engine image off-center adjustment

* ADJ3D Printer mode lead edge void area adjustment, print

engine front/rear void area adjustment, rear edge void edge area
adjustment

Standard image loss, void area

1)

Place a scale on the document table as shown below.

Set the scale so that it is in parallel with the scanning direction
and the scale tip is in close contact with the document guide
plate.

Place white paper on the document table so that the scale tip
can be seen.

2)

Enter the Sim. 50-1 mode. 

3)

Set the items RRCA, LEAD, and SIDE to the default values.

LV :

Lead edge void area

2-5mm

TV :

Rear edge void area

2-5mm

FV+RV:

4

2mm

LIL :

Lead edge image loss

3.0 

 1.0mm

2-5mm
2-5mm
4±2mm

Lead edge 
adjustment 
value

A

RRCA
(ADJUSTM
ENT)

Document lead 
edge reference 
position (OC)

10 - 99

50

B

RRCB
(ADJUSTM
ENT)

Resist 
motor ON 
timing 
adjustment

Main 
unit 
paper 
feed

1 - 99

50

C

RRCB-ADU
(ADJUSTM
ENT)

ADU

1 - 99

50

Image loss 
quantity 
setting 
value

D

LEAD
(IMAGE 
LOSS)

Lead edge image 
loss quantity setting

0 - 99

30

E

SIDE
(IMAGE 
LOSS)

Side image loss 
quantity setting

0 - 99

20

Void 
quantity 
setting

F

DEN-A 
(VOID)

Print lead edge void 
quantity adjustment

1 - 99

35

G

DEN-B 
(VOID)

Print rear edge void 
quantity adjustment

1 - 99

35

H

FRONT/
REAR
(VOID)

FRONT/REAR void 
quantity adjustment

1 - 99

35

MX-M1205  ADJUSTMENTS  5 – 38

4)

Perform the image lead edge reference position adjustment.

Press [CLOSE] key to shift from the simulation mode to the
copy mode. Make a copy at 100% and at 200% in the docu-
ment mode. 

If the lead edge section from 3.0mm position of scale in the
copy images of both 100% and 200% is not copied, the adjust-
ment value of RRCA is proper.

If the above conditions are not satisfied, change the adjust-
ment value of RRCA to adjust.

(Adjust the adjustment value of RRCA so that the lead edge
section from 3.0mm position of scale is not copied for different
copy magnification ratios.)

Repeat the above procedures until a satisfactory result is
obtained.

5)

Lead edge image loss adjustment

The lead edge image loss is set to the standard level if the fol-
lowing adjustment items are adjusted to the default values. 

If they are not the standard level or are set to optional values,
change and adjust them. 

Void area: 3.0mm Image loss: 3.0mm

To change the adjustment value, enter the desired adjustment
value and press [OK] key.

When the adjustment value is increased, the image loss
becomes greater. 

When the adjustment value is decreased, the image loss
becomes smaller. 

(Change rate for change in the adjustment value: 0.1mm/step)

 

This adjustment is needed in the following situations:

* The MFP control PWB has been replaced.

* The EEPROM on the MFP control PWB has been replaced.

* The scan control PWB has been replaced.

* The EEPROM on the scan control PWB has been replaced.

* When the scanner (reading) section is disassembled.

* When the scanner (reading) unit is replaced.

* U2 trouble has occurred.

* When the DSPF section is disassembled.

* The DSPF unit has been replaced.

This adjustment is used to adjust the scanner reading position
when scanning the front surface in the DSPF mode.

If this adjustment is improper, the scanner stop position is shifted to
the specified position, and a shade of the document table may be
copied in the lead edge section of the scan image in the DSPF
(front surface) mode. 

After completion of this adjustment, be sure to perform the “ADJ9B
copy mode image loss adjustment (DSPF mode)”.
(The value of "SIDE2" in Sim. 50-6 is adjusted.)

Make a copy of white paper in the DSPF (front surface) mode, and
check to confirm that no shade is printed in the lead edge section of
the copy image.

If the printed image at the leading edge of the copied image con-
tains a shadow of the original table, then do the following steps.

1)

Enter the Sim. 53-8 mode.

2)

Press the manual button to select the manual mode. 

3)

Enter the adjustment value with 10-key, and press [OK] button.

When the adjustment value is increased, the scanner reading
position when scanning the front surface in the DSPF mode is
shifted further from the scanner home position. 

When the adjustment value is changed by 1, the scanner read-
ing position when scanning the front surface in the DSPF
mode is shifted by 0.1mm.

4)

Select the copy mode, and check the adjustment result. 

Repeat the above procedures until a satisfactory result is
obtained. 

LEAD

Image loss 
adjustment

Lead edge 
image loss 
adjustment

0 - 99

30

3.0 

 1.0mm

SIDE

Side image 
loss 
adjustment

0 - 99

20

2.0 

 2.0mm

100% 

200% 

5mm 10mm

 

5mm 

10mm 

Paper lead
edge

Scale image 3.0mm position

5mm

 

4

3

2

1

Paper lead edge

Copy area

Maginification ratio: 400%

Image area

Papar lead edge

Shadow image of SPF

MX-M1205  ADJUSTMENTS  5 – 39

1)

Make a copy on A4 (11 X 8.5) paper in the sky shot mode. 
(All black copy is made.)

2)

Set the copy paper so that the all black surface of the copy
paper is overlapped with the document guide at the left edge of
the document table, and close the DSPF unit.

If copy paper is not set in a overlapped state, the SPF scan-
ning position is shifted by the lead edge void quantity. 

3)

Enter the Sim. 53-8 mode.

4)

Press the auto button to select the auto mode.

5)

Press [EXECUTE] key.

[EXECUTE] button is highlighted, and the scanner reading
position adjustment when scanning the front surface in the
DSPF mode is automatically performed. 

After completion of the adjustment, the adjustment value is dis-
played and [EXECUTE] button returns to the normal display.

When an error occurs, MEASUREMENT DISTANCE/RRCA 
"--" is displayed.

In this case, the adjustment is made in the manual mode.

6)

Select the copy mode, and check the adjustment result.

Repeat the procedures 2 thru 4 until a satisfactory result is
obtained.

 

This adjustment is needed in the following situations:

* The MFP control PWB has been replaced.

* The EEPROM on the MFP control PWB has been replaced.

* The scan control PWB has been replaced.

* The EEPROM on the scan control PWB has been replaced.

* When the scanner (reading) section is disassembled.

* When the scanner (reading) unit is replaced.

* U2 trouble has occurred.

* When the DSPF section is disassembled.

* The DSPF unit has been replaced.

Before execution of this adjustment, the following adjustment must
have been completed:

* ADJ3A Print engine image distortion adjustment (LSU parallel

ism adjustment)

* ADJ3B Print engine image magnification ratio adjustment (Main 

scanning direction)

* ADJ3C Print engine image off-center adjustment

* ADJ3D Printer mode lead edge void area adjustment/ Print 

engine front/rear void area and rear edge void area adjustment

* ADJ9A Copy mode image loss/ void area adjustment (Document 

table mode)

Standard image loss, void area

1)

Enter the Sim. 50-6 mode. 

(Leading edge image loss adjustment) 

1)

Adjust the lead edge image loss adjustment values
(LEAD_EDGE) of the front and back surfaces as shown below:

(Standard setting values)

C: LEAD_EDGE (SIDE1) : 20

F: LEAD_EDGE (SIDE2) : 30

Set "C: LEAD_EDGE (SIDE1)" and "F: LEAD_EDGE (SIDE2)" 
to 30. (Enter the adjustment value with 10-key, and press [OK]
button. 

LV :

Lead edge void area

2-5mm

TV :

Rear edge void area

2-5mm

FV+RV :

4

2mm

LIL : 

Lead edge image loss

3.0 

 1.0mm

A

SIDE1

Front surface 
document scanning 
start position (CCD)

50

B

SIDE2

Back surface 
document scanning 
start position (CCD)

50

C

Image loss 
quantity 
setting SIDE1

LEAD_EDGE 
(SIDE1)

Front surface lead 
edge image loss 
quantity setting

20

D

FRONT_REAR 
(SIDE1)

Front surface side 
image loss quantity 
setting

20

E

TRAIL_EDGE 
(SIDE1)

Front surface rear 
edge image loss 
quantity setting

30

F

mage loss 
quantity 
setting SIDE2

LEAD_EDGE 
(SIDE2)

Back surface lead 
edge image loss 
quantity setting

30

G

FRONT_REAR 
(SIDE2)

Back surface side 
image loss quantity 
setting

20

H

TRAIL_EDGE 
(SIDE2)

Back surface rear 
edge image loss 
quantity setting

20

2-5mm
2-5mm
4±2mm

MX-M1205  ADJUSTMENTS  5 – 40

2)

Use the DSPF to make a duplex copy at 100%. Check to con-
firm that the lead edge image loss is 3.0 

 1.0mm on the front

surface and the back surface.

Press [CLOSE] button in the simulation mode to jump to the
copy mode. Make a duplex copy and check the adjustment
result. 

If an acceptable result is not obtained, do the following steps.

3)

Change the adjustment values of SIDE1 and SIDE2 and make
an adjustment.

(Change the adjustment values of SIDE1 and SIDE2, and
press [OK] key.)

SIDE1: DSPF front surface lead edge scanning position
adjustment value

SIDE2: DSPF back surface lead edge scanning position
adjustment value

(Change rate for change in the adjustment value: 0.1mm/step)

Repeat the procedures 2 and 3 until a satisfactory result is 
obtained. 

1)

Use the DSPF at the magnification ratio of 100%, and make a
duplex copy. Check to confirm that the rear edge image loss is
2.0 

 1.0mm on the front surface and the back surface.

Press [CLOSE] button in the simulation mode to jump to the
copy mode. Make a duplex copy and check the adjustment
result.

If the result is not acceptable, do the following steps.

2)

Change the adjustment value of TRAIL_EDGE and make an
adjustment.

(Enter the adjustment value of TRAIL_EDGE with 10-key, and
press [OK] button.)

Repeat the above adjustments until an acceptable result is
obtained.

1)

Set the adjustment values of the front surface and the back
surface to 20.

(Enter 20 for the adjustment values of FRONT_REAR (SIDE1)
and FRONT_REAR (SIDE2), and press [OK] key.)

 

This adjustment is needed in the following situations:

* When shading is copied on the scanned image in the image send

mode.

* The MFP control PWB has been replaced.

* The EEPROM on the MFP control PWB has been replaced.

* The scan control PWB has been replaced.

* The EEPROM on the scan control PWB has been replaced.

* The scanner (reading) section has been disassembled.

* The scanner (reading) unit has been replaced.

* U2 trouble has occurred.

* When the DSPF section is disassembled.

* The DSPF unit has been replaced.

1)

Use A3 (11X17) paper and make a chart shown below. 

Write arrow marks on the four sides of the front surface and
the back surface.

2)

Scan the chart made in the procedure 1) by the SCAN to USB
mode, SCAN to PC mode, and SCAN to e-MAIL mode in the
following modes.

* Original table mode

* DSPF mode (Duplex mode)

3)

Open the scanned image file on PC, and check every edge of
the arrow marks to confirm that the image loss is "0" .

(If there is no void on the arrow marks, it is judged that the
image loss is "0.")

If the above conditions are not satisfied, perform the following
procedure.

4)

Enter the Sim. 50-27 mode.

5)

Press [SCANNER] button, and select the image send mode
and the image loss adjustment mode.

TIL

TV