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AR-C330  SETTING AND ADJUSTMENTS  7 - 2

This adjustment must be performed in the following cases:

• When the developing unit is disassembled.

• When the print density is low.

• When there is a lot of toner dispersion abnormally.

1) Remove the developing unit from the copier, and remove the

developing unit cover and the blade cover.

2) Loosen the DV doctor fixing screw A.

3) Insert a 0.525 thickness gauge at the point of 40mm – 70mm

from the DV doctor edge.

4) Push the DV doctor in the arrow direction and tighten the DV

doctor fixing screw.
(Perform the same procedure for the front and the rear frame
simultaneously.)

5) Check that the clearance is 0.525 ± 0.03mm at two positions

which are 40mm – 70mm from the both sides of the DV doctor.

∗

When inserting the thickness gauge, be careful not to scratch
the DV doctor and the MG roller.

This adjustment must be performed in the following cases:

• When the developing unit is disassembled.

• When the print density is low.

• When there is a lot of toner dispersion abnormally.

1) Remove the developing unit cover and the blade cover, and

place the developing unit on a flat surface.

2) Tie a string to a needle or a pin.

3) Hold the string and put the needle horizontally and move it

toward the MG roller. (Do not use a clip which is too big to
have a correct position.)

4) With the needle tip at 2 – 3mm from the MG roller surface,

mark the point on the surface which is on the extended line of
the needle tip. (Do not make contact between the needle tip
and the MG roller.)

5) Measure the distance between the marking position and sur-

face P of the developing unit, and check that the black unit is
13mm, color unit 24mm.

If the distance is not as specified above, loosen the fixing
screw A of the main pole adjustment plate, and move the
adjustment plate in the arrow direction to adjust.

ADJ M18 Document size sensor adjustment

ADJ 1

Original size sensor detection point adjustment

41-2

ADJ 2

Original size sensor sensitivity adjustment

41-2

ADJ M19 Waste toner full detection level adjustment

ADJ M20 Touch panel coordinates setting

65-1

ADJ M21 Transfer belt level adjustment (Transfer belt traveling adjustment)

ADJ M22 Fusing pressure adjustment

ADJ M23 Power voltage adjustment

ADJ 1

3.4 V power voltage adjustment

ADJ 2

5.0 V power voltage adjustment

ADJ 3

24 V power voltage adjustment

ADJ M24 Manual feed paper size sensor adjustment

40-2

ADJ M25 OHP sensor adjustment

40-5

JOB No

ADJUSTMENT ITEM

SIMULATION

* 1/* 2/* 3:

ADJ M9A automatically performs the adjustment contents of ADJ M9/ADJ M10. If satisfactory results are obtained by ADJ
M9A, there is no need to execute manual adjustments of ADJ M9/ADJ M10.

* 4/* 5:

ADJ M17/ADJ 2 automatically perform the adjustment contents of ADJ M17/ADJ 3. If satisfactory results are obtained by ADJ
M17/ADJ 2, there is no need to execute manual adjustments of ADJ M17/ADJ 3.

40mm

30mm

40mm

30mm

AR-C330  SETTING AND ADJUSTMENTS  7 - 3

This adjustment must be performed in the following case:

• When the developer is replaced.

1) With the front cabinet open, enter the SIM 25-2 mode.

2) Close the front cabinet.

3) Select the developing unit to be adjusted.

4) When the [EXECUTE] key is pressed, it is highlighted. The

OPC drum drive motor rotates and the toner concentration
sensor detects toner concentration and the output value is dis-
played.

After stirring for 3 min, the average value of toner concentration
sensor detection level is set (stored) as the reference toner con-
centration control value.

NOTE: When the operation is stopped in 3 min, the adjustment

result is not registered.
When the [EXECUTE] key is pressed during rotation of
the motor, it is stopped and the [EXECUTE] key returns to
the normal display.
If "EE-EU" or "EE-EL" is displayed, it means that the ref-
erence toner concentration control value is not set nor-
mally.
EE-EL: Less than 79 (1.59V)
EE-EU: More than 177 (3.41V)

5) Execute SIM 24-5 to clear the developer counter.

6) Execute SIM 44-27 to reset the half tone correction data (cor-

rection conditions) to the default.

(Note)

For adjustment of the output voltage, use internal imped-
ance of 1000Mohm or more and whose effective value
can be measured (Recommend: FLUKE87 FLUKE80K-
40). Use a high voltage probe.

This adjustment must be performed in the following cases:

• When the high voltage power (MC/DV) PWB is replaced.

• When a U2 trouble occurs.

• When the PCU main PWB is replaced.

• When the EEPROM of the PCU main PWB is replaced.

1) Enter SIM 8-2 mode.

2) Select the color mode to be adjusted with the scroll key and

press the [EXECUTE] key.

3) Check the output voltage with the high voltage probe, and

adjust the value of each color so that the specification in the
table below is satisfied.

Enter the adjustment value with the 10-key and press the [OK]
key.

2 ~ 3mm

P

2 ~ 3mm

13.0mm

2 ~ 3mm

24.0mm

NOTE: 1) When replacing the color developer, replace the yel-

low, Magenta, and Cyan developers at the same time.
If only one developer is replaced, the color balance
may be abnormal.
The black developer can be replaced alone.

2) After replacement of developers and the photoconduc-

tor, be sure to execute SIM 44-27 to reset the half tone
correction data (correction conditions) to the default
level.
If the above procedure is ignored, half tone correction
may not be performed properly.

Color

Normal mode adjustment spec

Check pin

K

–485 ± 5V

(5)

C

–495 ± 5V

(6)

M

–495 ± 5V

(7)

Y

–495 ± 5V

(8)

AR-C330  SETTING AND ADJUSTMENTS  7 - 4

∗

With all the OPC drums removed from the machine, bring the
high voltage probe into contact with the high voltage PWB GB
pin to check the adjustment value.

If an effective value meter and a high voltage probe are not avail-
able, refer to the table below to enter the adjustment value.

This allows to make a simple adjustment.

This adjustment must be performed in the following cases:

• When the high voltage power (MC/DV) PWB is replaced.

• When a U2 trouble occurs.

• When the PCU main PWB is replaced.

• When the EEPROM of the PCU main PWB is replaced.

1) Enter the SIM 8-1 mode.

2) Select the color mode to be adjusted with the scroll key and

press the [EXECUTE] key.

3) Check the output voltage with the high voltage probe, and

adjust the value of each color so that the specification in the
table below is satisfied.
Enter the adjustment value with the 10-key and press the [OK]
key.

∗

Set the developing unit (K, C, M, Y), bring the high voltage
probe into contact with the high voltage PWB GB pin to check
the adjustment value.

If an effective value meter and a high voltage probe are not avail-
able, refer to the table below to enter the adjustment value.

This allows to make a simple adjustment.

This adjustment must be performed in the following cases:

• When the high voltage power (TC) PWB is replaced.

• When a U2 trouble occurs.

• When the PCU main PWB is replaced.

• When the EEPROM of the PCU main PWB is replaced.

1) Enter the SIM 44-30 mode, enter the following value for each

mode and each color, and enter the [OK] key.

Color

SIM 8-2 adjustment value

K

A

485

C

B

495

M

C

495

Y

D

495

Color

Normal mode adjustment spec

Check pin

K

–325 ± 5V

(1)

C

–325 ± 5V

(2)

M

–325 ± 5V

(3)

Y

–325 ± 5V

(4)

(5)

(6)

(7)

(8)

GND

Color

SIM 8-1 adjustment value

K

A

325

C

B

325

M

C

325

Y

D

325

Display

BK

C

M

Y

Normal paper mode

A: SPX

191

175

131

131

ADU mode

B: DPX

191

175

131

131

OHP mode

C: TRANSPARENCY

204

209

167

182

Thick paper mode

D: HEAVY PAPER

204

187

138

138

(1)

(2)

(3)

(4)

GND

AR-C330  SETTING AND ADJUSTMENTS  7 - 5

This adjustment must be performed in the following cases:

• When the resist roller section is disassembled.

1) Enter the SIM 64-1 mode.

Select the black print mode.

2) Set the items as shown below:

3) Press the [EXECUTE] key.

The grid pattern is printed. Check that the print line in the
paper transport direction is in parallel with both edges.

If the above condition is not satisfied, perform the following proce-
dure.

4) Loosen the resist roller fixing screw, and change the resist

roller angle.

The standard position is at the center.

Repeat procedures 3) – 4) until the condition of procedure 3) is
satisfied.

This adjustment must be performed in the following cases:

• When the image density sensor is replaced.

• When the transfer belt is replaced.

• When a U2 trouble occurs.

• When the PCU main PWB is replaced.

• When the EEPROM of the PCU main PWB is replaced.

The process control sensor gain adjustment means:

The detection level differs between machines due to variations in
density detection sensors and parts. To prevent against this,
attach a seal of a certain density on the belt to calibrate the sen-
sor.

1) With the power OFF, open the right cover of the machine.

2) Pull out the transfer unit, and attach the adjustment sheet

(UKOG-0281FCZZ) to the belt.
(The attachment position is between the two separation pawls
of the fusing unit.)

3) Return the transfer unit. With the front cover open, turn on the

power.

4) Enter the SIM 44-13 mode.

5) Close the front cover.

6) Press the [EXECUTE] key.

The adjustment is automatically performed. When the adjust-
ment is completed, the [EXECUTE] key returns to the normal
display.

7) Check that the SIM 44-13 values are within the specifications.

∗

When an error message is displayed, clean the sensor and the
calibration plate, and adjust again.

∗

If the above procedure cannot cancel the error, replace the sen-
sor and the calibration plate.

8) Turn off the power.

9) Pull out the transfer unit, and remove the adjustment sheet.

(The adjustment sheet is positioned in front of the cleaning
blade at the back of the unit as the transfer belt rotates.)

A: 5
B: 255

C: 1

D: 9
E: Select A3 (11 x 17) paper size.

La

Paper transport direction

Paper

Paper edge

Check that lines
are in parallel.

Lb

Check content

Spec

PCLEDC (Sensor current in color calibration)

128 or below

DARK_ID (Color image density sensor dark 
voltage)

30 or below

P_PSI (Read value of calibration sheet)

102 ± 5

P_CYI (Read value of calibration plate)

115 ± 30