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(THVG will be turned on for about 30 sec.)

•

If the output current is not in the specified range, change the
displayed value and adjust. (1 step: about 0.1 

µ

A)

Transfer charger current

Adjustment spec

AR-2XX/3XX 

series

AR-405

TC drum current (Front
surface mode)

+13.5+1.5

µ

A

+15.0+1.5

µ

A

TC drum current (Back
surface mode)

+13.5+1.5

µ

A

+15.0+1.5

µ

A

*

Check that the black clip is securely grounded to the machine
chassis. 

When UKOGE0043CS01 is used:

Knob 1:

Set to DCmA.

Knob 1:

Connect to 2. 

Red clip: Connect to (+).
Blue clip: Connect to (–).

When an ammeter is used:

Red clip: Connect to (+) of the ammeter.
Blue clip: Connect to (–) of the ammeter.

1) Install the DV unit, the drum holder unit, and the charger units to

the copier.

2) Remove the rear cabinet. 

3) Connect the digital multi-meter to SHVG output check pin (CN2-3

pin). 

4) Set the digital multi-meter range to the DCV range. 

5) Manually turn on the door switch. 

6) Execute SIM 8-7. (SHVG will be turned on for about 30 sec.)

7) If the output voltage is not in the specified range, change the

displayed value and adjust. (1 step: about 1V)

Adjustment range

AR-2XX/3XX

series

AR-405

Separation DC component
voltage (Front surface mode)

–140 

±

10V

–150 

±

10V

Separation DC component
voltage (Back surface mode)

–140 

±

10V

–150 

±

10V

This adjustment must be performed in the following cases:

•

When both sensors are cleaned in maintenance.

•

When the value of DMLED/PCLED in SIM 44-12 are greater than
about 100.
Clean both sensors and perform the adjustment.

1) Execute SIM 44-2.

2) When the adjustment is completed, the gain value is displayed. If

an error occurs during the adjustment, the error display is made.

This adjustment must be performed in the following case:

•

When new developer is supplied.

1) Execute SIM 25-2.

2) The adjustment is automatically made with the toner density sen-

sor output value displayed. After 3 minutes from starting stirring,
the toner density sensor is sampled 16 times, and the average
value is stored as the toner density adjustment value. 

*

When new developer is supplied, clear the developer counter
with SIM 24-5.

2

20

200

(DCmA)

F

R

Green grip

Yellow grip

Black grip

Body chassis
(no coating)

Black

Blue

Red

White

Orange

Orange

Microswitch

Blue grip

Red grip

Digital multi-meter
(UKOGE0043FC01)

White

AR-405

7 – 5

1/21/1999

1) Execute SIM 64-1, and print the pattern of SQUARE from the

manual feed tray. 

(A: 22  E: 1)

Set items

A:

Self print pattern

B:

Density level

C:

Setting of the number of self print sheets

D:

Density mode

1 Auto

3 Text/Photo

2 Text

4 Photo

E:

Cassette selection

1 Manual feed

5 Desk middle cassette

2 Upper cassette

6 Desk lower cassette

3 Lower cassette

7 LCC

4 Desk upper cassette

F:

Duplex print selection 

1 Simplex

2 Duplex

2) Obtain value a of the printed sheet.

3) Turn the adjustment handle to adjust according to the value a. 

Adjustment handle:

1 scale = 0.5mm (dimension a)

θ

<90 degress:

Right direction 

θ

>90 degrees:

Left direction 

Adjustment specification:

a = 0 mm, 

θ

 = 90 degrees

1) Execute SIM 64-1. print one sheet from each paper feed port.

Measure the void amount both sides. 

*

Select the self print pattern which allows easy measurement of
the void amount. 

2) Execute SIM 50-10.

a

θ

Paper exit direction

AR-405

1/21/1999

7 – 6

3) Change each value to adjust so that the void amounts of both

sides are even. 

a > b: Increase the value.

a < b: Decrease the value. (See the figure below.)

4) Press the CA key to terminate the simulation.

*

Normally the laser power is automatically corrected by process
control. Use the image density adjustment described later unless
there is a special request from the user. 

(AR-230/280/285/330/335 series copy mode)

All must be set to "16."

(AR-405)

Set all to "5" except for PH256.

1) Insert the front/rear mirror base drive wire into the frame groove

and press and fix it with the wire fixing plate. At that time, do not
tighten the wire fixing screw. 

Change the direction of the lamp portioning plate. (F and R)

2) Push the copy lamp unit onto the positioning plate, and tighten the

wire fixing screw.

AR-2XX/3XX series

AR-405

b

a

b

a

AR-405

7 – 7

1/21/1999

*

Note for assembling the copy lamp unit

Move the copy lamp unit to the paper exit side, and fix the copy lamp
unit wiht the harness guide so that the distance between the copy
lamp harness and the lower frame is about 25 ~ 30 mm with the copy
lamp harness extended.

Shift the copy lamp unit to the paper exit side, and fix it with the
harness guide so that the distance from the lower frame is about 24 

±

2mm with the copy lamp harness extended. 

After fixing, manually shift the copy lamp unit a few times to check
that it moves smoothly. 

If the copy lamp harness is loosely fixed, the copy lamp unit may
jump up when reading, resulting in abnormal reading. 

AR-2XX/3XX series

AR-405

This adjustment is to adjust the parallelism of the mirror base to the
OPC drum surface and the original surface. 

1) Manually turn the mirror base drive pulley to bring mirror base B

into contact with mirror base positioning plate. 

If, at that time, the front frame side and the frame side of mirror
base B are brought into contact with the mirror base positioning
plate simultaneously, the parallelism is correct and there is no
need for adjustment. 

This adjustment is executed 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 shown below is made.

Lb

La

Original

Paper exit
direction

Copy

AR-405

1/21/1999

7 – 8