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MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 24

5) Change the height balance of the scanner rail on the front

frame side.

Remove the lower cabinet of the operation panel. Loosen the
scanner rail fixing screw to change the balance between the
right and the left heights of the scanner rail.
Repeat the procedures 2) - 5) until the difference between the
image distortions (distortion balance) is deleted.

6) Without changing the balance of the scanner rail on the front

frame side, change the overall height.

7) Set the test chart prepared in the procedure 1) on the docu-

ment table, and make a copy on A3 (11" x 17") paper. Check
that the distortion in the main scanning direction is within the
specified range.
Repeat the procedures 6) and 7) until the distortion in the main
scanning direction is in the specified range.

 

This adjustment must be performed in the following cases:
* The RSPF section has been disassembled.
* When replacing the RSPF unit.
* The RSPF unit generates skewed scanned images.
1) Create an adjustment chart by printing in duplex mode the self-

print pattern (grid pattern) specified in Simulation 64-2.
SIM 64-2 set values

A = 1, B = 1, C = 254, D = 255

Make sure that the print grid pattern is almost in parallel with
the paper edges, and apply position marks A and B to the
leading and trailing edges of the paper surface lead edge sec-
tion.

2)

Copy the adjustment chart (created in step 1) to A3 (11" x 17")
paper in RSPF duplex mode, and then check the image for
skews (Set in the RSPF feed tray so that the mark on the
adjustment chart is at the edge). 
• Check with one of the following methods.

Check Method 2
Check that the squareness of the main scanning direction
print line for the longitudinal direction of paper is within
1.0mm.

If the copy image is not in the above state, perform the pro-
cedure 3).

3)

Open the RSPF unit, and loosen the fixing screw of the hinge.

4)

Slide the RSPF unit in the arrow direction to make the skew
adjustment.

5)

Make a copy again and measure (a) and (b) on the copied test
chart. Repeat procedures 2) to 5) until the condition ((a) - (b) =
 1mm or less) is satisfied.

Paper pass direction

a

b

(Front side)

Make sure that the output satisfies the condition: |a-b| ± 1 mm

0 - 1.0mm

MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 25

 

This adjustment must be performed in the following cases:
* The CCD unit has been removed from the machine.
* The CCD unit has been replaced.
* When the copy image focus is not properly adjusted.
* When the copy magnification ratio in the copy image main scan-

ning direction is not properly adjusted.

* U2 trouble has occurred.
1) Enter the SIM 48-1 mode.

2) Set the adjustment item CCD (MAIN) to 50 (default value).

Select the adjustment item with the scroll key, and enter the
adjustment value with 10-key and press [OK] key.

3) Place a scale on the original table as illustrated below.

4) Make a normal copy on A4 paper.

Go to the copy mode, and make a copy.

5) Compare the copied image of the scale and the actual scale

length in terms of length.

6)

Obtain the copy magnification ratio correction ratio in the main
scanning direction from the following formula.
Main scanning direction copy magnification ratio correction
ratio = (Original size - Copy image size) / Original size x 100%
(Example) 
Compare the scale of 10mm with the scale of 10mm on the
copy image.
Main scanning direction copy magnification ratio correction
ratio = (100 - 99) / 100 x 100 = 1

If the copy magnification ratio is not satisfactory, perform the
following procedures.

7)

Remove the document table glass.

8)

Remove the dark box cover.

9)

To prevent against shift of the CCD unit optical axis, mark the
CCD unit base as shown below.

This procedure must be executed also when the CCD unit is
replaced.

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20

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100

110

10

20

90

100

110

1.0mm

100mm scale
(Orignal)

Copy image
(1mm (1%)
shorter than
the original)

MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 26

10) Loosen the CCD unit fixing screws.

Never loosen the screws marked with X.
If any one of these screws is loosened, the position and the
angle of the CCD unit base may be changed to cause a prob-
lem, which cannot be adjusted in the market. In that case, the
whole scanner unit must be replaced.

11) Slide the CCD unit in the arrow direction (CCD sub scanning

direction) to change the installing position.
When the copy image is longer than the original scale, shift the
CCD unit in the direction B. When the copy image is shorter
than the original scale, shift the CCD unit in the direction A.
One scale of mark-off line corresponds to 0.2%.
At that time, fix the CCD unit so that it is in parallel with the
scale on the front and the rear side of the CCD unit base.
* Fix the CCD unit so that it is in parallel with the line marked

in procedure 9).

12) Make a copy and check the copy magnification ratio again.

If the copy magnification ratio is not in the range of 100 

 1%,

repeat the procedures of 9) - 11) until the condition is satisfied.

By changing the CCD unit fixing position with the simulation 48-1
adjustment value at 50, the copy magnification ratio is adjusted
within the specified range (100 

 1.0%) and the specified resolution

is obtained based on the optical system structure.

 

This adjustment must be performed in the following cases:
* When the registration roller section is disassembled.
* When the LSU is replaced or removed.
* U2 trouble has occurred.
* The PCU PWB has been replaced.
* The EEPROM of the PCU PWB has been replaced.

This adjustment is performed by the user to increase the lead edge
void area to greater than the standard value (3mm) in the printer
mode.
1)

Enter the SIM 50-5 mode.

EXECUTE

End of print

EXECUTE

10-key

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MX-3610N  ADJUSTMENTS AND SETTINGS  4 – 27

2) Select the set item L with the scroll key, and enter the value

corresponding to the paper feed tray with A4 (11" x 8.5") paper
in it.

3) Press [EXECUTE] key.

The adjustment pattern is printed.

4) Measure the distance from the paper lead edge the adjustment

pattern to the image lead edge, and check to confirm that it is
in the standard adjustment value range.
Standard adjustment value: 4.0 

 1.0mm

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

5)

Select the adjustment target of the paper feed mode adjust-
ment item DENC with the scroll key.

6)

Change the adjustment value.
Enter the adjustment value and press the [OK] key or the
[EXECUTE] key.
When [EXECUTE] key is pressed, the adjustment pattern is
printed.
When the adjustment value is increased, the distance from the
paper lead edge to the image lead edge is increased. When
the adjustment value is decreased, the distance is decreased.
When the set value is changed by 1, the distance is changed
by about 0.1mm.

Repeat the procedures 4) - 6) until the condition of 4) is satisfied.

 

* Requisite conditions before execution of the color balance/den-

sity adjustment
Before execution of the color balance/density adjustment, check
to insure that the adjustments which affect the color balance/den-
sity have been completed properly.
The importance levels of them are shown below.

(Since the following items affect the color balance/density
directly, they must be adjusted or set before execution of the
image quality adjustments.)
1)

The following adjustment items must be adjusted properly.

(Though the following items affect the color balance/density,
there is no need to adjust them frequently. When, however, a
trouble occurs, they must be checked and adjusted.)
1)

 The following items must be adjusted properly.

A

DEN-C

Printer lead edge image 
position adjustment

1 - 99

30

B

DEN-B

Rear edge void area 
adjustment

1 - 99

30

C

FRONT/REAR

FRONT/REAR void area 
adjustment

1 - 99

20

D

DENB-MFT

Manual feed rear edge void 
area adjustment correction 
value

1 - 99

50

E

DENB-CS1

Tray 1 rear edge void area 
adjustment correction value

1 - 99

50

F

DENB-CS2

Tray 2 rear edge void area 
adjustment correction value

1 - 99

50

G

DENB-CS3

Tray 3 rear edge void area 
adjustment correction value

1 - 99

50

H

DENB-CS4

Tray 4 rear edge void area 
adjustment correction value

1 - 99

50

I

DENB-LCC

LCC rear edge void area 
adjustment correction value

1 - 99

50

J

DENB-ADU

ADU rear edge void area 
adjustment correction value

1 - 99

50

K

DENB-HV

Heavy paper correction 
value

1 - 99

50

L

MULTI COUNT

Number of print

1 - 999

1

M

PAPER

MFT

Tray 
selection

Manual 
paper feed

1 - 5

1

2 (CS1)

CS1

Tray 1

2

CS2

Tray 2

3

CS3

Tray 3

4

CS4

Tray 4

5

N

DUPLEX

YES

Duplex print 
selection

Yes

0 - 1

0

1 (NO)

NO

No

1

4.0 1.0mm

ADJ 

3

Image density 
sensor adjustment

ADJ 

3A

Image density sensor 
calibration

44-13

ADJ 

5

Print engine image distortion adjustment / OPC drum 
phase adjustment / Color registration adjustment 
(Print engine section)

50-22/20

ADJ 

1

Adjust the 
developing unit

ADJ 

1A

Adjust the developing 
doctor gap

ADJ 

1B

Adjust the developing 
roller main pole position

ADJ 

1C

Toner density control 
reference value setting

25-2

ADJ 

2

Adjusting high 
voltage values

ADJ 

2A

Adjust the main charger 
grid voltage

8-2

ADJ 

2B

Adjust the developing 
bias voltage

8-1

ADJ 

2C

Transfer current and 
voltage adjustment

8-6

ADJ 

8

Scan image focus adjustment

48-1