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MX-B201/B201D  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 81/2" 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 [

] [

] key. SCAN

mode lamp ON.

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

cation ratio with the [Numeric] keys and press the [START] key.

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 eleven 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 and  50-10 are
used.

To select the adjustment mode with SIM 50-01, use the [

] [

]

key.

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

To select the adjustment mode with SIM 50-10, use the [

] [

]

key.

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

=

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.

Mode

SIM

Remarks

1

Print start position 
(Main cassette paper feed)

50-01

2

Print start position (Manual paper feed)

50-01

3

Image lead edge void amount

50-01

4

Image scan start position

50-01

5

Image rear edge void amount 
(Cassette paper feed)

50-01

6

Image rear edge void amount 
(Manual paper feed)

50-01

7

Print center offset 
(Main cassette paper feed)

50-10

8

Print center offset (Manual paper feed)

50-10

Adjustment mode

Display item

Lamp ON

Print start position 
(Main cassette paper feed)

TRAY1

COPY mode lamp
Main cassette lamp

Print start position 
(Manual paper feed)

MFT

COPY mode lamp
Manual paper feed lamp

Image lead edge void 
amount

DEN-A

PRINT mode lamp
Main cassette lamp

Image scan start position

RRC-A

SCAN mode lamp
Main cassette lamp

Image rear edge void 
amount (Cassette paper 
feed)

DEN-B

COPY mode lamp
PRINT mode lamp
SCAN mode lamp
Main cassette lamp

Image rear edge void 
amount (Manual paper 
feed)

RRC-B

COPY mode lamp
PRINT mode lamp
Manual paper feed lamp

Adjustment mode

Display item

Lamp ON

Print center offset 
(Main cassette paper feed)

TRAY1

COPY mode lamp
Main cassette lamp

Print center offset 
(Manual paper feed)

MFT

COPY mode lamp
Manual paper feed lamp

2nd print center offset 
(Main cassette paper feed)

SIDE2

PRINT mode lamp
Main cassette lamp

MX-B201/B201D  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 mode lamp/COPY mode lamp

ON) (A), the lead edge void amount (TEXT mode lamp/PRINT
mode lamp ON) (B), and the scan start position (PHOTO mode
lamp/SCAN mode lamp ON) (C) to 0, and make a copy of a
scale at 100%.

4) Measure the image loss (Rmm) of the scale. 

Set C = 10 x R (mm). (Example: Set to 40.)
When the value of C is increased by 10, the image loss is
decreased by 1mm. (Default: 50)

5) Measure the distance (Hmm) from the paper lead edge to the

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

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

When the value of B is increased by 10, the void is extended by
about 0.1mm. (For 25 or less, however, the void amount is
regarded as 0.)

* The RSPF adjustment is made by adjusting the RSPF image

scan start position after OC adjustment.

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.

5mm

10mm

Distance from the paper lead edge 
to the image lead edge, H = 5mm

Image loss, R = 4mm

(Example)

B4 or 8 1/2

″ × 14″ paper

A4 size rear edge

Paper rear edge

Void amount (Standard value: 2 - 3mm)

Scale image

MX-B201/B201D  ADJUSTMENTS  9 - 4

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 doc-
ument 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.

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.

Document guide

Center

Copy paper
(A4 or 8 1/2

″ × 11″)

(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)

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

1

10

W

2

3

4

5

6

7

8

9

MX-B201/B201D  ADJUSTMENTS  9 - 5

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

For selection of modes, use the [

] [

] 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 docu-
ment cover.

1) Execute SIM 46-01 (300dpi). To adjust in 600dpi, execute SIM

46-02.

2) Select the mode to be adjusted with the [AUTO] key. Set the

exposure level to 3 (center) for all adjustment. (Except for the
auto mode.)

3) Make a copy.

Check the adjustment level (shown in the above table) of the
exposure test chart (Sharp Gray Scale).

(When too bright): Decrease the value displayed on the copy

quantity display.

(When too dark):

Increase the value displayed on the copy quan-
tity display.

∗

The value can be set in the range of 1 - 99.

Note:

• Use a digital multi meter with internal resistance of 10M

Ω or

more measurement.

• After adjusting the grid LOW output, adjust the HIGH output. Do

not reverse the sequence.

1) Set the digital multi meter range to DC700V.

2) Set the positive side of the test rod to the connector CN11-3

(GRID) of high voltage section of the power PWB and set the
negative side to the frame ground (power frame).

3) Execute SIM 8-2. (The main charger output is supplied for 30

sec in the grid voltage HIGH output mode.)

4) Adjust the control volume (VRG1) so that the output voltage is

580 ± 12V.

Adjustment 

mode

Display 

item

LED

Sharp gray chart 

adjustment level

Auto mode

AE

COPY mode lamp "3" is slightly copied.

Text mode

TEXT

PRINT mode lamp "3" is slightly copied.

Photo mode

PHOTO SCAN mode lamp "3" is slightly copied.

Text T/S mode TSTXT PRINT mode lamp

SCAN mode lamp

"3" is slightly copied.

Auto T/S mode TSAE

COPY mode lamp
SCAN mode lamp

"3" is slightly copied.

Test chart

White paper

TEXT
     | | | | |

(2) [AUTO] key

(1) Exposure mode, level display

Sharp Gray Scale adjustment level

Non toner 
save 
mode

Toner 
save 
mode

1

10

W

2

3

4

5

6

7

8

9

Slightly copied.

Not copied.

1

10

W

2

3

4

5

6

7

8

9

Slightly copied.

Not copied.