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9) Measure the distance H between the paper lead edge and the

image print start position. Set the image print start position set
value (Exposure display <EXP1> ON) again.

•

1 step of the set value corresponds to about 0.127mm shift.

•

Calculate the set value from the formula below.

99 - H/0.127 (mm) = Image print start position set value <H: Print
start position measurement value (mm)>

Example: 99 - 5/0.127 = 99 - 39.4 = about 59

Note: If the set value is not obtained from the above formula,

perform the fine adjustment.

10)Set the main cassette lead edge void adjustment value (Exposure

display <PHOTO> ON)* again.

•

1 step of the set value corresponds to about 0.127mm shift.

•

Calculate the set value from the formula below.

B/0.127 (mm) = Lead edge void adjustment value <B: Lead edge
void (mm)>

Example: When setting the lead edge void to 2.5mm:

2.5 /0.127 = about 20

Note: If the set value is not obtained from the above formula,

perform the fine adjustment.

*

Second cassette lead edge void adjustment: Exposure display
<AUTO + MANUAL + PHOTO>
Multi bypass tray lead edge void adjustment: Exposure display
<MANUAL + PHOTO>

OC second print surface (Auto duplex) lead edge position adjust-
ment: Density display <EXP3>

OC second print surface (Auto duplex) lead edge void adjustment:
Exposure display <None>

*

For the adjustment procedure, set to S 

→

 D mode

Note: Before performing the second print surface lead edge posi-

tion adjustment and the lead edge void adjustment, be
sure to perform the first print surface lead edge position
adjustment in advance, and be sure to perform the second
print surface lead edge position adjustment and then the
lead edge void adjustment in this sequence.

Adjustment

mode

SIM

LED

Set value

Spec
value

Set

range

OC image
lead edge
position

SIM

50-1

AUTO

99

R/0.127

Lead
edge

void: 1 -

4mm

Image

loss: 3mm

or less

1 

∼

 99

Main
cassette lead
edge void

PHOTO

B/0.127

Second
cassette lead
edge void

AUTO +

MANUAL

+ PHOTO

Multi bypass
tray lead
edge void

MANUAL

+ PHOTO

Print start
position

EXP1

99 –
H/0.127

OC second
print surface
lead edge
position
adjustment

SIM

50-1*

EXP 3

1 step:
0.127mm 
shift

OC second
print surface
lead edge
void
adjustment

No display

1 step:
0.127mm 
shift

*

(Set to S 

→

 D mode for before execution)

b. SPF image lead edge position adjustment
1) Set a scale on the OC table as shown below.

Note: Since the printed copy is used as a test chart, put the scale in

paralled with the edge lines.

2) Make a copy, Then use the copy output as an original to make an

SPF copy again.

3) Check the copy output. If necessary, perform the following adjust-

ment procedures.

4) Execute SIM 50-1.

5) Set the SPF lead edge position set value (Exposure display

<MANUAL> ON) so that the same image is obtained as that ob-
tained in the previous OC image lead edge position adjustment.

Adjustment

mode

SIM

LED

Set value

Spec value

Set

range

SPF image

lead edge

position

SIM

50-1

MANUAL

1 step:

0.127mm

shift

Lead edge

void: 1 -

4mm

Image loss:

3mm or less

1 

∼

 99

5

10

0mm

0mm

*

Fit the print edge with the paper edge, and perform the 

  lead edge adjustment. 

5

10

2.5mm

2.5mm

AR-205

AR-205 [6] ADJUSTMENT 05/24/1999

6 – 3

c. Rear edge void adjustment
1) Set a scale as shown in the figure below.

2) Set the document size to A4 (8.5" 

×

 11"), and make a copy at

100%.

3) If necessary, perform the following adjustment procedure.

4) Execute SIM 50-1 and set the density mode to AUTO + PHOTO

(Rear edge  void).

The currently set adjustment value is displayed.

5) Enter the set value and press the start key.

The correction value is stored and a copy is made.

*

Second print surface (auto duplex) rear edge void adjustment:
Exposure display <EXP 5>

*

Set to S 

→

 D mode before execution.

Note: Before performing the second print surface rear edge void

adjustment, be sure to perform the second print surface
lead edge position adjustment. Never reverse the se-
quence.

Mode

SIM

LED

Set value

Specifi-

cation

Set

range

Rear edge
void

SIM 50-1

AUTO +

PHOTO

1 step:
0.127mm 
shift

4mm or

less

1 

∼

 99

Second print
surface rear
edge void

SIM 50-1

∗

EXP 5

4mm or

less

∗

 Set to S 

→

 D mode before execution

d. Paper off center adjustment
1) Execute SIM 50-1 and set the density mode of AUTO + MANUAL

(Left edge void) to 1.

2)  Set a test chart (UKOG-0089SCZZ) on the document table.

3) Select a paper feed port and make a copy.

Compare the copy and the test chart. If necessary, perform the
following adjustment procedure.

4) Execute SIM 50-10.

After completion of warmup, shading is performed and the cur-
rently set off center adjustment value of each paper feed port is
displayed.

5) Enter the set value and press the start key.

The correction value is stored and a copy is made.

*

Second print surface (auto duplex) off-center adjustment: Ex-
posure display: None

Mode

SIM

LED

Set value

Specifi-

cation

Set

range

Paper off

center

SIM 50-10

Selected

tray ON

Add 1:
0.127mm
shift to R
side.
Reduce 1:
0.127mm
shift to L
side.

Single:
Center

±

2.0mm

1 

∼

 99

Duplex:

Center

±

2.5mm

Second

print

surface

off-center

SIM 50-10

No

display

*

When SIM 48-01 (AE) is executed, the document off-center is
automatically set. Therefore, the off-center adjustment previously
described in 5) must be adjusted again.

e. Left edge void area adjustment
Note: Before performing this adjustment, be sure to check that the

paper off center adjustment (SIM 50-10) is completed.

1) Set a test chart (UKOG-0089SCZZ) on the document table.

2) Select a paper feed port and make two copies.

Compare the second copy and the test chart. If necessary, per-
form the following adjustment procedure.

*

The first copy does not show the void. Be sure to check the
second copy.

3) Execute SIM 50-1 and set the density mode to AUTO + MANUAL

(Left edge void).

The currently set adjustment value is displayed.
(When the off center adjustment previously described is per-
formed, "0" is displayed.)

4) Enter the set value and press the start key.

The correction value is stored and a copy is made.

Mode

SIM

LED

Set value

Specification

Set

range

Left
edge
void

SIM

50-1

AUTO +

MANUAL

1 step:
0.127mm 
shift

0.5 

∼

 4mm

1 

∼

 99

*

When the left edge void is set with the paper off center adjusted,
the both edge void is automatically adjusted.

1) Remove the OC glass and the right cabinet.

Scale image

Paper rear edge

Void amount (Standard value: 4mm or less) 

AR-205

AR-205 [6] ADJUSTMENT 05/24/1999

6 – 4

2) Loosen the copy lamp unit wire fixing screw.

3) Manually turn the mirror base drive pulley and bring No. 2/3 mirror

base unit into contact with the positioning plate.

At that time, if the front frame side and the rear frame side of No.
2/3 mirror base unit are brought into contact with the positioning
plate at the same time, the mirror base unit parallelism is proper.

If one of them is in contact with the positioning plate, perform the
adjustment of 4).

4) Loosen the set screw of the scanner drive pulley which is not in

contact with No. 2/3 mirror base unit positioning plate.

5) Without moving the scanner drive pulley shaft, manually turn the

scanner drive pulley until the positioning plate is brought into con-
tact with No. 2/3 mirror base unit, then fix the scanner drive pulley.

6) Put No. 2/3 mirror base unit on the positioning plate again, push

the projections on the front frame side and the rear frame side of
the copy lamp unit to the corner frame, and tighten the wire fixing
screw.

AR-205

AR-205 [6] ADJUSTMENT 05/24/1999

6 – 5

This adjustment must be performed in the following cases:

•

When the mirror base drive wire is replaced.

•

When the lamp unit, or No. 2/3 mirror holder is replaced.

•

When a copy as shown is made.

1) Set A3 (11" x 17") white paper on the original table as shown

below.

2) Open the original cover and make a normal (100%) copy. 

3) Measure the width of the black background at the lead edge and

at the rear edge. 

If the width (La) of the black background at the lead edge is equal
that (Lb) at the rear edge, there is no need to execute the follow-
ing procedures of 4) ~ 7).

4) Loosen the mirror base drive pulley fixing screw on the front frame

side or on the rear frame side. 

•

When La < Lb
Turn the mirror base drive pulley on the front frame side in the
arrow direction A. (Do not move the mirror base drive pulley
shaft.)

•

When La > Lb
Turn the mirror base drive pulley on the front frame side in the
arrow direction A. (Do not move the mirror base drive pulley
shaft.)

5) Tighten the mirror base drive pulley fixing screw. 

La = Lb

6) Execute the main scanning direction (FR) distartion balance ad-

justment previously described in 2) again.

When there is no skew copy in the mirror base scanning direction and
there is no horizontal error (right angle to the scanning direction), the
adjustment can be made by adjusting the No. 2/3 mirror base unit rail
height.

Before performing this adjustment, be sure to perform the horizontal
image distortion adjustment in the laser scanner section. 

This adjustment must be performed in the following cases:

•

When the mirror base wire is replaced.

•

When the copy lamp unit or No. 2/3 mirror unit is replaced. 

•

When the mirror unit rail is replaced or moved.

•

When a following copy is made.

Lb

La

A

B

Rear side

Front side

AR-205

AR-205 [6] ADJUSTMENT 05/24/1999

6 – 6