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AR-203E/5420/M200/M201  ADJUSTMENTS  9 - 3

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.

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%. (AR-203E/5420)

For the AR-M200/M201, the following LED’s are lighted:

• AE lamp/COPY mode lamp: (A)

• TEXT lamp/PRINT mode lamp: (B)

• PHOTO lamp/SCAN mode lamp: (C)

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.

Adjustment mode

Display item

Lamp ON

Print start position 
(Main cassette paper feed)

TRAY1

COPY mode lamp
Main cassette lamp

(*) Print start position 
(2nd cassette paper feed)

TRAY2

COPY mode lamp
2nd 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 
(2nd cassette paper feed)

TRAY2

COPY mode lamp
2nd 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

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

AR-203E/5420/M200/M201  ADJUSTMENTS  9 - 4

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
turning 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 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

AR-203E/5420/M200/M201  ADJUSTMENTS  9 - 5

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

For selection of modes, use the [Exposure mode selector] key (or
[

] [

] key for the AR-M200/M201).

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) AR-203E/5420

Select the mode to be adjusted with the exposure mode select
key. Set the exposure level to 3 for all adjustment. (Except for
the auto mode.)

2) AR-M200/M201

Select the mode to be adjusted with the exposure 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

Exposure mode

display lamp

Sharp gray chart 

adjustment level

Auto mode

Auto lamp ON

"3" is slightly copied.

Manual mode Manual lamp ON

"3" is slightly copied.

Photo mode

Photo lamp ON

"3" is slightly copied.

Manual T/S 
mode

Manual lamp/Photo lamp ON "3" is slightly copied.

Auto T/S 
mode

Auto lamp/Photo lamp ON

"3" is slightly copied.

Test chart

White paper

(1)

(2)

Exposure mode select key/display lamp

[Exposure mode selector] key/
display lamp

(1)

(2)

1

1

2

2

2

2

1

1

(2) Exposure key

(1) Exposure mode, level display

TEXT
     | | | | |

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.

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.

AR-203E/5420/M200/M201  ADJUSTMENTS  9 - 6

1) Set the digital multi meter range to DC500V.

2) Set the positive side of the test rod to the connector CN-10-1

(DV BIAS) and set the negative side to the frame ground
(power frame).

3) Execute SIM 8-1 to output the developing bias for 30sec, and

check that the output is –400 ± 8V.

This step adjusts the front surface printing (odd-number pages of a
document set) in the S-D mode copying and the leading edge posi-
tion of an image on even-number pages in the D-S mode.

That is, it covers the adjustment of the second surface printing
mode (image loss at the front edge of an image) in which image
data is once stored in memory.

The image data is read, starting from its front end in the document
delivery direction (Reference direction of document setting in the
OC mode)and stored in memory.

This stored image data is printed starting at the printing start posi-
tion, in the order of last-stored data to the first-stored data.

In other words, the front edge image loss of the image can be
adjusted by changing the document read end position.

1) Preparing test chart (Draw a scale at the rear end of one side of

a sheet of A4 white paper or letter paper)

2) Set the test chart so that the scale is positioned as shown

below, in the S-D mode and the D-S mode.

3) Execute simulation 50-18.

Select the SPF/RSPF memory reverse output position, and
press [START] key to make a copy.

Adjust the setting so that the front edge image loss is less than
4.0 mm in the SPF/RSPF mode.
An increase of 1 in setting represents an increase of 0.1 mm in
image loss.

This is the adjustment of the first surface printing mode (rear end
void) in duplex copying.

In a duplex copying operation, the paper is delivered starting from
the rear end of the first printing surface. It is therefore necessary to
make a void area at the rear end on the first printing surface to pre-
vent paper jam at the fusing part.

There are two adjustment modes:

1) Paper trailing edge void quantity 50-19 (TEXT)

This adjustment is made when the cassette paper size is rec-
ognized. The trailing edge void quantity can be adjusted by
changing the trailing edge image laser OFF timing.

Note: • A digital multi meter with internal resistance of 1G

Ω must

be use for correct check.

• The adjustment volume is locked, and no adjustment can

be made.

Mode

Display item Default

LED

OC memory reverse 
output position 

OC

50

COPY mode lamp

SPF/RSPF memory 
reverse output position

SPF

50

PRINT mode lamp

Scale (S-D mode)

Scale (D-S mode)

5 10

The front edge of the

scale on test chart

 Front edge of paper

Void area

less than 4 mm

2nd printing surface where scale is printed (lower side)