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AL-2040  ADJUSTMENTS  9 - 1

The copy magnification ratio must be adjusted in the main scan-
ning direction and in the sub scanning direction. To adjust, use
SIM 48-1.

The main scanning (front/rear) direction magnification ratio adjust-
ment is made manually.

The adjustment is made by manual key operations. (In either of the
automatic and manual adjustments, the zoom data register set
value is changed for adjustment.)

The magnification ratio in the sub scanning direction is adjusted by
changing the carriage (scanner) scanning speed.

1) When the main PWB is replaced.

2) When the EEPROM in the main PWB is replaced.

3) When "U2" trouble occurs.

4) When repairing or replacing the optical section.

• Screwdriver (+)

• Scale

1) Set the scale vertically on the document table. (Use a long

scale for precise adjustment.)

2) Set the copy magnification ratio to 100%.

3) Make a copy on A4 or 8-1/2" x 11" paper.

4) Measure the length of the copied scale image.

5) Calculate the main scanning direction magnification ratio. 

Main scanning direction magnification ratio

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

range. If it is not within the specified range, perform the follow-
ing procedures.

7) Execute SIM 48-1 to select the main scanning direction copy

magnification ratio adjustment mode.
To select the adjustment mode, use the copy mode select key.

In the case of the automatic adjustment, when the START switch is
pressed, the mirror base unit moves to the white plate for shading
to scan the width of the reference line, calculating the correction
value and displaying and storing this value.

After execution of the automatic adjustment, go out from the simu-
lation mode and make a copy to check the magnification ratio.

If the magnification ratio is not in the specified range (100 ± 1.0%),
manually adjust as follows.

8) Enter the new set value of main scanning direction copy mag-

nification ratio with the copy quantity set key, and press the
START button.

9) Change the set value and repeat the adjustment until the ratio

is within the specified range.
When the set value is changed by 1, the magnification ratio is
changed by 0.1%.

1) When the scanner unit drive section is disassembled or the

part is replaced.

2) When the main PWB is replaced.

3) When the EEPROM in the main PWB is replaced.

4) When "U2" trouble occurs.

• Scale

=

Copy image dimensions

X 100 (%)

Original dimension

Adjustment mode

Lighting lamp

Default

Main scanning direction 
magnification ratio adjustment

TEXT lamp ON

50

Sub scanning direction 
magnification ratio adjustment

PHOTO lamp ON

50

100

110

120

130

150

140

mm
1/2mm

JAPAN

HARDENED

STAINLESS

Shizuoka

100

110

120

130

150

140

mm
1/2mm

JAPAN

HARDENED

STAINLESS

Shizuoka

110

10

20

10

20

(When a 100mm scale is used as the original.)

Paper feed

direction

Reference

Comparison point

Original (Scale)

Copy

AL-2040  ADJUSTMENTS  9 - 2

1) Set the scale on the document table as shown below. (Use a

long scale for precise adjustment.)

2) Set the copy magnification ratio to 100%.

3) Make a copy on A4 or 8-1/2" x 11" paper.

4) Measure the length of the copied scale image.

5) Calculate the sub scanning direction copy magnification ratio

using the formula below.

6) Check that the actual copy magnification ratio is within the

specified range. (100 ± 1.0%).
If it is not within the specified range, perform the following pro-
cedures.

7) Execute SIM 48-1 to select the sub scanning direction copy

magnification ratio adjustment mode.
To select the adjustment mode, use the copy mode select key.
(PHOTO lamp ON)

8) Enter the new set value of sub scanning direction copy magni-

fication ratio with the copy quantity set key, and press the
START button.

Repeat procedures 1) - 8) until the sub scanning direction actual
copy magnification ratio in 100% copying is within the specified
range.

When the set value is changed by 1, the magnification ration is
changed by 0.1%.

There are following five kinds of image position adjustments,
which are made by laser control except for the image scan start
position adjustment. For the adjustments, SIM 50-01, 50-06, 50-
10, 50-18 and SIM 50-19 are used.

To select the adjustment mode with SIM 50-01, use the copy mode
select key.

The relationship between the adjustment modes and the lighting
lamps are as shown in the table below.

: Supported for the installing model and skipped for non-install-

ing mode.

To select the adjustment mode with SIM 50-10, use the copy mode
select key.

The relationship between the adjustment modes and the lighting
lamps are as shown in the table below.

: Supported for the installing model and skipped for non-install-

ing mode.

=

Copy image dimensions

X 100 (%)

Original dimension

100

110

120

130

150

140

mm
1/2mm

JAPAN

HARDDENCD

STAINLESS

Shizuoka

100

110

120

130

150

140

mm
1/2mm

JAPAN

HARDDENCD

STAINLESS

Shizuoka

110

10

20

10

20

Original (Scale)

Paper feed

direction

Reference

Comparison point

Copy

No.

Adjustment item

Simulation

1

Print start position (Main cassette)

50 - 01

2

Print start position (2nd cassette)

50 - 01

3

Print start position (Manual feed)

50 - 01

4

Image lead edge void amount

50 - 01

5

Image scan start position

50 - 01

6

Image rear edge void amount

50 - 01

7

SPF image scan start position

50 - 06

8

SPF rear edge void amount

50 - 06

9

Center offset

50 - 10

10

Memory reverse position adjustment in 
duplex copy

50 - 18

11

Duplex copy rear edge void adjustment

50 - 19

12

Duplex back print start position

50 - 19

Adjustment mode

Lamp ON

Print start position (Main cassette 
paper feed)

AE, main cassette lamp

Print start position (2nd cassette 
paper feed)

AE, 2nd cassette lamp

Print start position (Manual paper 
feed)

AE, manual feed lamp

Image lead edge void quantity

TEXT lamp

Image scan start position

PHOTO lamp

Image rear edge void quantity

AE, TEXT, PHOTO lamp

Adjustment mode

Lamp ON

Print center offset (Main cassette 
paper feed)

AE, main cassette lamp

Print center offset (2nd cassette)

AE, 2nd cassette lamp

Print center offset (Manual paper 
feed)

AE, manual paper feed 
lamp

Second side center offset

TEXT lamp

AL-2040  ADJUSTMENTS  9 - 3

1) Set a scale to the center of the paper lead edge guide as

shown below, and cover it with B4 or 8-1/2" x 14" paper.

2) Execute SIM 50-01

3) Set the print start position (AE lamp ON) (A), the lead edge

void amount (TEXT lamp ON) (B), and the scan start position
(PHOTO lamp ON) (C) to 0, and make a copy of a scale at
100%.

4) Measure the image loss amount (R mm) of the scale image.

Set C = 10 X R (mm). (Example: Set the value of C to 30.)
When the value of C is increased by 10, the image loss is
decreased by 1mm. (Default: 50)

5) Measure the distance (H mm) between the paper lead edge

and the image print start position.
Set A = 10 X H (mm). (Example: Set the value of A to 50.)
When the value of A is increased by 10, the image lead edge
is shifted to the paper lead edge by 1mm. (Default: 50)

6) Set the lead edge void amount to B = 50 (2.5mm).

When the value of B is increased by 10, the void amount is
increased by about 1mm. For 25 or less, however, the void
amount becomes zero. (Default: 50)

1) Set a scale to the rear edge section of A4 or 11" x 8-1/2" paper

size as shown in the figure below, and cover it with B4 or 8-1/
2" x 14" paper.

2) Execute SIM 50-01 to select the image rear edge void amount

adjustment mode.
The set adjustment value is displayed on the copy quantity dis-
play.

3) Make a copy and measure the void amount of image rear

edge.

4) If the measurement value is out of the specified range, change

the set value and repeat the adjustment procedure.
The default value is 50.

Note: The rear edge void cannot be checked with the first sheet

after entering the simulation mode, the first sheet after turn-
ing off/on the power, or the first sheet after inserting the
cassette. Use the second or later sheet to check the rear
edge void.

1) Set the self-made test chart for the center position adjustment

so that its center line is aligned with the center mark of the
document guide.

• Test chart for the center position adjustment.

Draw a line at the center of A4 or 8-1/2" x 11" paper in the paper
transport direction.

2) Execute SIM 50-10 to select the print center offset (cassette

paper feed) adjustment mode.
The set adjustment value is displayed on the copy quantity dis-
play.

5mm

10mm

(Example)

Distance between paper lead
edge and image: H = 5mm

Image loss:
R = 3mm

B4 or 8-1/2

″ × 14″ paper

A4 size rear edge

Paper rear edge

Void amount (Standard value: 2 - 3mm)

Scale image

Document guide

Center

Copy paper
(A4 or 8-1/2

″ × 11″)

AL-2040  ADJUSTMENTS  9 - 4

3) Make a copy and check that the copied center line is properly

positioned.
The standard value is 0 ± 2mm from the paper center.

4) If the measured value is out of the specified range, change the

set value and repeat the adjustment procedure.
When the set value is increased by 1, the copy image is
shifted by 0.1mm toward the rear frame.

• For the manual paper feed, change the manual paper feed

adjustment mode and perform the similar procedures.

• Since the document center offset is automatically adjusted by

the CCD which scan the reference lines (F/R) on the back of
document guide, there is no need to adjust manually.

The copy density adjustment must be performed in the following
cases:

• When maintenance is performed.

• When the developing bias/grid bias voltage is adjusted.

• When the optical section is cleaned.

• When a part in the optical section is replaced.

• When the optical section is disassembled.

• When the OPC drum is replaced.

• When the main control PWB is replaced.

• When the EEPROM on the main control PWB is replaced.

• When the memory trouble (U2) occurs.

1) Arrangement before execution of the copy density adjustment

• Clean the optical section.

• Clean or replace the charger wire.

• Check that the voltage at the high voltage section and the devel-

oping bias voltage are in the specified range.

• One of the following test charts:

UKOG-0162FCZZ, UKOG-0089CSZZ, KODAK GRAY SCALE

• B4 (14" x 8-1/2") white paper

• The user program AE setting should be "3."

For the copy density adjustment, the image data shift function pro-
vided in the image process LSI is used.

Use SIM 46-1 to set the copy density for each copy mode.

For selection of modes, use the copy mode select key.

1) Place the test chart so that its edge is aligned with the A4 (Let-

ter) reference line on the document table. Then place a A4
(14" x 8-1/2") white paper on the test chart and close the doc-
ument cover.

(Copy A)

(Copy B)

2.0mm or less

2.0mm or less

Copy image

Copy paper
folding line

Copy image

Copy paper
folding line

Shift

Shift

(Paper feed direction)

1

10

W

2

3

4

5

6

7

8

9

UKOG-
0162FCZZ
 DENSITY
 No.

1

2

3

4

5

6

7

8

9

10

W

UKOG-
0089CSZZ
 DENSITY
 No.

0.1

0.2

0.3

0.5 1.9

0

KODAK
 GRAY
 SCALE

1

2

3

4

19

A

Auto Mode

Brightness 1 step only

Manual Mode

Brightness 5 steps. Adjustment of only the 
center brightness is made.

Photo Mode

Brightness 5 steps. Adjustment of only the 
center brightness is made.

Manual T/S mode

Brightness 5 steps. Adjustment of only the 
center brightness is made.

T/S Auto mode

Brightness 1 step only

Test chart

White paper