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MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 82

2) Enter the SIM 50-1 mode.

3) Set RRCA, LEAD, and SIDE to the default values.

4) Perform the image lead edge reference position adjustment.

Shift to the copy mode, and make a copy at each of 100% and

200% in the document table mode.
When the adjustment value of RRCA is proper, the lead edge

image from 4.0mm is not copied in either of 10 0% and 200%

copy scale.
If not, change and adjust the RRCA value.
(Adjust so that the lead edge image from 4.0mm is not copied

in either of different copy magnification ratios.)
Repeat  the  above  procedures  until a  satisfactory  result  is

obtained.

5) Image loss adjustment

When the adjustment item of the image loss below is set to the

default value, it is adjusted to the st andard state. If it is not in

the below standard state, or when it  is set to a desire d value,

change these adjustment items.

Void area: 4.0mm, Image loss: 4.0mm

When  the  adjustment  value is incr eased,  the  image  loss is

increased.  When  the  adjustment  value is decreased,  the

image loss is decreased.
When the adjustment value is  changed by 1, the void area is

changed by 0.1mm.

A Lead 

edge 

adjust-

ment 

value

RRCA

Document lead 

edge reference 

position (OC)

0 - 99

50

B

RRCB-CS1

Regis-

tration 

motor 

ON 

timing 

adjust-

ment

Standard 

Tray

1 - 99

60

C

RRCB-DSK

Desk

1 - 99

60

D

RRCB-LCC

LCC

1 - 99

60

E

RRCB-MFT

Manual 

paper feed

1 - 99

60

F

RRCB-ADU

ADU

1 - 99

60

G Image 

loss area 

setting 

value

LEAD

Lead edge image 

loss area setting

0 - 99

40

H

SIDE

Side image loss 

area adjustment

0 - 99

20

I

Void area 

adjust-

ment

DENA

Lead edge void 

area adjustment

1 - 99

40

J

DENB

Rear edge void area 

adjustment

1 - 99

30

K

FRONT/

REAR

FRONT/REAR void 

area adjustment

1 - 99

20

L

Off-center 

adjust-

ment

OFFSET_

OC

OC document off-

center adjustment

1 - 99

50

M Magnifi-

cation 

ratio 

correction

SCAN_

SPEED_OC

SCAN sub scanning 

magnification ratio 

adjustment (CCD)

1 - 99

50

N Sub 

scanning 

direction 

print area 

correction 

value

DENB-MFT

Manual feed 

correction value

1 - 99

50

O

DENB-CS1

Tray 1 correction 

value

1 - 99

50

P

DENB-CS2

Tray 2 correction 

value

1 - 99

50

Q

DENB-CS3

Tray 3 correction 

value

1 - 99

50

OK

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R Sub 

scanning 

direction 

print area 

correction 

value

DENB-CS4

Tray 4 correction 

value

1 - 99

50

S

DENB-LCC

LCC correction 

value

1 - 99

50

T

DENB-ADU

ADU correction 

value

1 - 99

55

U

DENB-HV

Heavy paper 

correction value

1 - 99

50

LEAD

Image loss 

adjustment

Lead edge 

image loss 

adjustment

0 - 99

40

4.0



 1.0mm

SIDE

Side image 

loss 

adjustment

0 - 99

20

2.0



 1.0mm

5mm

5mm

10mm

100%

200%

Paper lead
edge

Scale image 4.0mm position

5mm

10mm

4

3

2

1

Paper lead edge

Maginification ratio : 400%

Copy area

MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 83

 

This adjustment must be performed in the following cases:
* When the scan control PWB is replaced.
* When the EEPROM on the scan control PWB is replaced.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) section is replaced.
* When U2 trouble occurs.
* When the RSPF section is disassembled.
* When the RSPF unit is replaced.
This simulation is to adjust the scanning position when scanning in

the RSPF mode.
If this adjustment  is made improperly, the scanner stop position is

shifted  from the specified  position  and  a  shade of  the  document

table may be reflected on the lead edge section of the scan image

in the RSPF mode.
1) Make a copy in the R SPF mode, and check for any shade on

the lead edge section of the copy image.

If there is any shade of the d ocument table on the lead edge

section of the copy image, perform the following procedures.

2) Enter the SIM 53-8 mode, and press [MANUAL] key.

3) Enter an adjustment value with 10-key, and press [OK] key.

When the set value is increased,  the distance from the home

position to the RSPF scanning position is increased. When the

set value is changed by 1, the scanning position is changed by

0.1mm.

Perform  the pr ocedures  of 1) - 3)   until a sa tisfactory  result is

obtained.

After  execution of  this  adjustment,  be sur e  to  execute  ADJ 18C

Copy  image position, imag e  loss,  void ar ea  adjustment (Ma nual

adjustment) (RSPF mode).

 

This adjustment must be performed in the following cases:
* When the scan control PWB is replaced.
* When the EEPROM on the scan control PWB is replaced.
* When the scanner (reading) section is disassembled.
* When the scanner (reading) unit is replaced.
* When U2 trouble occurs.
* When the RSPF section is disassembled.
* When the RSPF unit is replaced.
a. Adjustment procedures
1) Prepare the adjustment chart.

The  adjustment  chart  can  be made by  the  following  proce-

dures.
Use A4 (11" x 8.5") paper and draw arrow marks vertically and

horizontally on the front and the back surfaces.
At the same time, put mar ks of the lead edge, the trail edge,

the  front  end,  and  the  rear  end  as  well  as  the  identification

marks of the front surface and the back surface.

2) Enter the SIM 50-6 mode.

Image area

Papar lead edge

Shadow image of RSPF

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Draw arrows.

Put the position
marks.

Put the position
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MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 84

* Item A, B: When the adjustment value is increased, the scan 

timing is delayed.

* Item  C -   H: When  the  adjustment valu e  is increased, the

image loss is increased.

* Item A - H: 1 step = 0.1mm change
* The RSPF rear edge image loss setting is provided for coun-

termeasures against the case when shades are produced.

(Lead edge image loss adjustment)
1) Set the lead edge image loss adjustment values (LEAD EDGE

(SIDE1/SIDE2)  on  the  front  surface  and  the  back  surface  to

the following values.
(Standard set value)
TRAIL EDGE (SIDE 1): 

40 Lead edge image loss set value (Front surface)

TRAIL EDGE (SIDE 2): 

40 Lead edge image loss set value (Back surface)

(When the set value is increased, the lead edge image loss is

increased.)
(Change for change in the set value: 0.1mm/step)

2) Make  a duplex copy  in  100% in  the  RSPF  mode.  Check  to

confirm that the lead edge image loss is within 4.0  1.0mm on

the front surface and the back surfa ce. The paper lead edge

must be aligned with the presumed image lead edge.

If  the  above  condition  is  not  satisfied, p erform  the  following

procedure.

3) Enter the adjustment value of  SIDE1/SIDE2 with 10-key, and

press [OK] key.
Adjust  so  that  the  paper  lead  edge  is aligned with  the  pre-

sumed image lead edge.
SIDE1: Front surface lead edge scan position adjustment
SIDE2: Back surface lead edge scan position adjustment
(When the adjustment value is increased, the print image posi-

tion is shifted to the delaying direction for the paper.)
(Change for change in the set value: 0.1mm/step)

Perform  the procedur es  of 2)   - 3) until a satisfactor y  result  is

obtained.
(Rear edge image loss adjustment)
1) Make  a duplex copy  in  100% in  the  RSPF  mode.  Check  to

confirm that the rear edge image loss is 2.0 -  5.0mm on the

front surface and the back surface.

If  the  above  condition  is  not  satisfied, p erform  the  following

procedure.

A

SIDE1

Front surface 

document scan 

position 

adjustment (CCD)

1 - 99

50

B

SIDE2

Back surface 

document scan 

position 

adjustment (CCD)

1 - 99

50

C

Image 

loss 

amount 

setting 

SIDE1

LEAD_EDGE 

(SIDE1)

Front surface lead 

edge image loss 

amount setting

0 - 99

20

D

FRONT_REAR 

(SIDE1)

Front surface side 

image loss amount 

setting

0 - 99

20

E

TRAIL_EDGE 

(SIDE1)

Front surface rear 

edge image loss 

amount setting

0 - 99

40

F

Image 

loss 

amount 

setting 

SIDE2

LEAD_EDGE 

(SIDE2)

Back surface lead 

edge image loss 

amount setting

0 - 99

20

G

FRONT_REAR 

(SIDE2)

Back surface side 

image loss amount 

setting

0 - 99

20

H

TRAIL_EDGE 

(SIDE2)

Back surface rear 

edge image loss 

amount setting

0 - 99

40

I

OFFSET_SPF1

RSPF front surface 

document off-

center adjustment

1 - 99

50

J

OFFSET_SPF2

RSPF back 

surface document 

off-center 

adjustment

1 - 99

50

K

SCAN_SPEED_SPF1

RSPF document 

front surface 

magnification ratio 

adjustment (Sub 

scan)

1 - 99

50

L

SCAN_SPEED_SPF2

RSPF document 

back surface 

magnification ratio 

adjustment (Sub 

scan)

1 - 99

50

Paper lead edge

Copy image

Image loss
4.0

1.0mm

The paper lead edge must be aligned with
the image lead edge.

Paper rear edge

Copy image

Image loss 2.0 - 5.0mm

MX-3640N  ADJUSTMENTS AND SETTINGS  5 – 85

2) Enter  the adjustment value  of  TRAIL  EDGE  (SIDE1/SIDE2)

with 10-key, and press [OK] key.
TRAIL EDGE (SIDE 1): 

Rear edge image loss adjustment value (Front surface)

TRAIL EDGE (SIDE 2): 

Rear edge image loss adjustment value (Back surface)

(When the adjustment value is increased, the rear edge image

loss is increased.)
(Change for change in the set value: 0.1mm/step)

Perform  the pr ocedures  of 1) - 2)   until a sa tisfactory  result is

obtained.
(Front/rear frame direction image loss adjustment)
1) Make  a  duplex  copy in 100%   in the RSPF mode. Check  to

confirm that the image losses on the front frame side and the

rear frame side are 2.0  2.0mm on  the front surface and the

back surface.

If  the  above  condition  is not  satisfied,  perform  the  following

procedure.

2) Enter  the  adjustment  value  of  FRONT/REAR  (SIDE  1)  /

FRONT/REAR (SIDE 2), and press [OK] key.
FRONT/REAR (SIDE 1): 

Front/Rear image loss adjustment value (Front surface)

FRONT/REAR (SIDE 2): 

Front/Rear image loss adjustment value (Back surface)

(When the adjustment value is increased, the front/rear image

loss is increased.)
(Change for change in the adjustment value: 0.1mm/step)

Perform  the pr ocedures  of 1) - 2)   until a sa tisfactory  result is

obtained.

 

This adjustment must be performed in the following cases:
* When the finisher is disassembled.
* When the finisher control PWB is replaced.
* When the punch unit is disassembled.
* When the punch control PWB is replaced.
* When the alignment is improper.
* When the punch hole position is shifted.
* When the staple position is shifted.
1) Enter the SIM 3-10 mode.

Paper F
side edge

Paper R
side edge

Copy image

Copy image

Image loss
2.0

2.0mm

Image loss
2.0

2.0mm

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