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MX-4070V  ADJUSTMENTS AND SETTINGS  5 – 19

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.

10) Loosen the CCD unit fixing screws.

NOTE: 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
problem, 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 ± 0.8%,
repeat the procedures of 9) - 11) until the condition is satisfied.

NOTE: By changing the CCD unit fixing position with the simula-

tion 48-1 adjustment value at 50, the copy magnification
ratio is adjusted within the specified range (100 ± 0.8%)
and the specified resolution is obtained based on the opti-
cal system structure.

 

This adjustment must be performed in the following cases:
• When the DSPF CCD unit is replaced.
• When the DSPF CCD unit is replaced.
• When the COPY/SCAN/FAX image focus is not properly

adjusted.

• When the DSPF unit is removed.
• When the DSPF unit is replaced.
1)

Make a duplex copy in DSPF mode.

2)

Make sure that the copied image on the back side of the paper
is satisfactorily focused.
If the image is not satisfactorily focused, do the following
steps.

3)

Open the upper door. Remove the screws, and remove the
transport PG upper.

4)

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

5)

Loosen the CCD unit fixing screws.

A

B

MX-4070V  ADJUSTMENTS AND SETTINGS  5 – 20

NOTE: Never loosen the screws marked with X.

Loosening these screws could possibly change the CCD
unit base optical axis. Once the optical axis has been
changed, it cannot be corrected through on-site adjust-
ments. Solving such a problem requires the replacement of
the entire scanner unit.

6) 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 4).

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

If the copy magnification ratio is not in the range of 100 ± 0.8%,
repeat the procedures of 4) – 6) until the condition is satisfied.

NOTE: By changing the CCD unit fixing position with the simula-

tion 48-1 adjustment value at 50, the copy magnification
ratio is adjusted within the specified range (100 ± 0.8%)
and the specified resolution is obtained based on the opti-
cal system structure.

 

 

NOTE: If the default adjustment value of the scan image magnifi-

cation ration adjustment (main scanning direction) of SIM
48-1 is changed, copy image quality may be degraded.
Therefore, this adjustment must be executed only when
there is a special necessity.

This adjustment must be performed in the following cases:
• When the copy magnification ratio in the copy image main scan-

ning direction is not properly adjusted.

• When the scanner motor is replaced.
• U2 trouble has occurred.

• When the SCN-MFP control PWB is replaced.
• When the EEPROM of the SCN-MFP control PWB is replaced.
Before this adjustment, the focus adjustment (CCD unit installing
position adjustment) must have been completed.
1)

Place a scale on the document table as shown in the figure
below.

2)

Enter the SIM 48-1 mode.

3)

Make a normal copy and obtain the copy magnification ratio.
Press [CLOSE] key to shift from the simulation mode to the
copy mode, and make a copy.

4)

Check that the copy magnification ratio is within the specified
range (100 ± 0.8%).
If the copy magnification ratio is within the specified range (100
± 0.8%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, perform the following
procedure.

5)

Change the CCD (MAIN) adjustment value of Simulation 48-1.
When the adjustment value is increased, the copy magnifica-
tion ratio is increased.
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.02%.
Repeat the procedures 3) - 5) until the copy magnification ratio
is within the specified range (100 ± 0.8%).

 

This adjustment must be performed in the following cases:
• When the copy magnification ratio in the copy image sub scan-

ning direction is not properly adjusted.

• When the scanner motor is replaced.
• U2 trouble has occurred.
• When the SCN-MFP control PWB is replaced.
• When the EEPROM of the SCN-MFP control PWB is replaced.

A

B

MX-4070V  ADJUSTMENTS AND SETTINGS  5 – 21

1) Place a scale on the document table as shown in the figure

below.

2) Enter the SIM 48-1 mode.
3) Make a normal copy and obtain the copy magnification ratio.

Go to the copy mode, and make a copy.

4) Check that the copy magnification ratio is within the specified

range (100 ± 0.8%).
If the copy magnification ratio is within the specified range (100
± 0.8%), the adjustment is completed. If the copy magnification
ratio is not within the specified range, perform the following
procedure.

5) Change the CCD (SUB) adjustment value of Simulation 48-1.

When the adjustment value is increased, the copy magnifica-
tion ratio in the sub scanning direction is increased.
When the adjustment value is changed by 1, the copy magnifi-
cation ratio is changed by about 0.1%.
Repeat the procedures 3) - 5) until the copy magnification ratio
is within the specified range (100 ± 0.8%).

 

This adjustment must be performed in the following cases:
• When the SCN-MFP control PWB is replaced.
• When the EEPROM on the SCN-MFP control PWB is replaced.

• When U2 trouble occurs.
• When the copy magnification ratio of the DSPF/RSPF mode

copy image in the main scanning direction is not proper.

• When the DSPF/RSPF is disassembled.
a. Adjustment procedures
1)

Place the duplex adjustment chart shown below on the docu-
ment tray of the DSPF/RSPF.
The adjustment chart is prepared by the following procedures.
Use A4 (11" x 8.5") paper, and put marks on both sides and
both surfaces of the paper at 10mm from each edge.

2)

Make a duplex copy at the normal ratio on A4 paper.

3)

Measure the images on the copy paper and the original
images.

4)

Obtain the image magnification ratio according to the following
formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If the image magnification ratio is within the specified range
(100 ± 0.8%), there is no need to perform the adjustment.
If it is not within the specified range, perform the following pro-
cedures.

5)

Enter the SIM 48-1 mode.

6)

Select an adjustment item of SPF (MAIN)/SPFB (MAIN) with
the scroll key.

7)

Enter an adjustment value with 10-key, and press [OK] key.
When the adjustment value is increased, the image magnifica-
tion ratio is increased. When the adjustment value is changed
by 1, the image magnification ratio is changed by 0.02%

8)

Make a normal copy and obtain the copy magnification ratio.
Repeat the procedures of 1) - 8) until a satisfactory result is
obtained.

10

20

90

100

110

10

20

90

100

110

10

20

90

100

110

Ჷ

Copy magnifi-

cation ratio

(Original dimension - Copy dimension)

Original dimension

X 100%

(Example 1)

Copy A

(Shorter than

the original)

Scale

(Original)

(Example 2)

Copy B

(Longer than

the original)

SPF(MAIN)

Main scanning direction image magnification ratio 
(Front surface)

SPFB(MAIN)

Main scanning direction image magnification ratio 
(Back surface)

10mm

10mm

Paper pass direction

A4 size

(Both the front surface 

and the back surface)

original

10

50

100

150

200

250

copy

10

50

100

150

200

250

MX-4070V  ADJUSTMENTS AND SETTINGS  5 – 22

 

This adjustment must be performed in the following cases:
• When the SCN-MFP CONTROL PWB is replaced.
• When the EEPROM on the SCN-MFP CONTROL PWB is

replaced.

• When U2 trouble occurs.
• When the copy magnification ratio of the DSPF/RSPF mode

copy image in the sub scanning direction is not proper.

• When the DSPF/RSPF is disassembled.
1) Place the duplex adjustment chart shown below on the docu-

ment tray.
The adjustment chart is prepared by the following procedures.
Use A4 (11" x 8.5") paper, and put marks on both sides and
both surfaces of the paper at 10mm from each edge.

2) Make a duplex copy at the normal ratio on A4 paper.
3) Measure the images on the copy paper and the original

images.

4) Obtain the image magnification ratio according to the following

formula:
Image magnification ratio = Original size / Original size x 100
(%)
Image magnification ratio = 99 / 100 x 100 = 99 (%)
If the image magnification ratio is within the specified range
(100 ± 0.8%), there is no need to perform the adjustment.
If it is not within the specified range, perform the following pro-
cedures.

5) Enter the SIM 48-1 mode.
6) Select an adjustment item with the scroll key.

7) Enter an image magnification ratio adjustment value with 10-

key, and press [OK] key.

When the adjustment value is increased, the image magnifica-
tion ratio is increased. When the adjustment value is changed
by 1, the image magnification ratio is changed by 0.1%.

8)

Make a normal copy and obtain the copy magnification ratio.
Repeat the procedures of 1) - 8) until a satisfactory result is
obtained.

 

 

This adjustment must be performed in the following cases:
• When the scanner (reading) section is disassembled.
• When the scanner (reading) unit is replaced.
• When a U2 trouble occurs.
• When the SCN-MFP control PWB is replaced.
• When the EEPROM on the SCN-MFP control PWB is replaced.
1)

Make a copy of the adjustment chart (using the document
table) in the adjustment mode.

2)

Check the copy image center position.
If A - B = ± 1.0mm, the adjustment is not required.

If the above condition is not satisfied, perform the following
procedures.

3)

Enter the SIM 50-12 mode.

4)

Select the adjustment mode OC with the scroll key.

5)

Enter the adjustment value with 10-key, and press [OK] key.
The entered value is set.

SPF(SUB)

Sub scanning direction image magnification ratio 
(Front surface)

SPFB(SUB)

Sub scanning direction image magnification ratio
(Back surface)

A4 size

10mm

10mm

Paper pass direction

original

copy

10

50

100

150

200

10

50

100

150

200

$

#$

#

B'

A' - B' = ±1.0mm

A'

(100%)