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AR-C330  SETTING AND ADJUSTMENTS  7 - 26

Check the color balance and the density by making copies of
Sharp gray chart and the serviceman chart.

To check the copy color balance and the density, use Sharp gray
chart and the serviceman chart and set the copy density in the
Text/Printed Photo mode to Manual 3 and make a copy in the
color mode and in the black and-white mode.

At that time, all the color balance adjustments of the user adjust-
ment mode must be set to the default (center).

Be sure to use the specified paper for color.

The copy image density of Sharp gray chart must be as follows:

NOTE: Use the color test chart (UKOG-0283FCZZ) to check the

color balance.

(Color copy)

(Black-and-white copy)

Check the color balance of Serviceman chart copy is as shown
below.

(Color copy)

This adjustment must be performed in the following cases:

• When the CCD unit is replaced.

• When a U2 trouble occurs.

• When the PCU main PWB is replaced.

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

• When replacing a part in the scanner (reading) section.

• When the CCD unit is replaced, be sure to perform this adjust-

ment.

1) Check that the table glass and No. 1, 2, 3 mirrors and lenses

are free from dust and dirt. (If there is dust and dirt, clean with
alcohol.)

2) Check that there is no dirt or scratch on BK1 and BK2 patches

of SIT chart (UKOG-0280FCZZ).

If there is dirt, clean with alcohol.

If there is scratch, replace the chart with new one.

1) Set the SIT chart (UKOG-0280FCZZ) to the left edge of the

original table, and fit the center of SIT chart with the center of
the glass holder.

When SIT chart is not available, execute SIM 63-5 to set the CCD
gamma to the default. This method, however, provides a lower
adjustment accuracy than the method by using SIT chart.

NOTE: Check that the SIT chart (UKOG-0280FCZZ) is closely

placed on the original table.

2) With the SIT chart fixed, close the original cover.

3) Enter the SIM 63-03 mode, and press the [EXECUTE] key.

The automatic adjustment is started. During the automatic
adjustment, the [EXECUTE] key is highlighted. When the
adjustment is completed, the key returns to the normal dis-
play.

NOTE: The SIT chart (UKOG-0280FCZZ) is affected by light

(especially by ultraviolet rays) and temperature and
humidity. Put it in a bag (clear file, etc.) and store in a dark
place.

This adjustment must be performed in the following cases:

When a consumable part (developer, OPC drum, the transfer belt)
is replaced.

• When the CCD unit is replaced.

• When a U2 trouble occurs.

• When the ICU main PWB is replaced.

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

The color balance adjustment (auto adjustment) is the automatic
adjustment of cyan, magenta, yellow, and black copy density with
SIM 46-24.
(There are following two modes of auto color balance adjustment.)

1) Auto color balance adjustment by the serviceman (with SIM

46-24)

2) Auto color balance adjustment by the user (with the user pro-

gram)
(The color balance target becomes the service target.)

1

2

3

4

5

6

7

8

9

10

W

SHARP gray chart

Patch 2 is clearly copied. 

Patch 1 is slightly copied.

1

2

3

4

5

6

7

8

9

10

W

SHARP gray chart

Patch 1 is not copied.

Patch 3 is copied.

Patch 2 is slightly copied.

Serviceman chart (Color patch section)

The background may
be slightly copied.

No great difference with
the original (Whole copy
of the patch section)

Patch 7 and the following must be copied.
Density balance of each color must be proper.

AR-C330  SETTING AND ADJUSTMENTS  7 - 27

The auto color balance adjustment by the user is provided in order
to reduce the number of service calls.

If the copy color balance is shifted by some reason, the user per-
forms the color balance adjustment to correct it.

If, however, there is a basic problem in the machine, or if the
machine environment is changed largely, this function does not
serve as an effective means.

While the automatic color balance adjustment by the serviceman
allows adjustment even when the machine environment is
changed largely, providing normal color balance. If there is a basic
problem in the machine, repair it and adjust to provide normal
color balance.

The above points must be fully understood for proper operation.

When this adjustment is performed, the color balance adjustment
of all the copy modes are changed.
(However, the color balance adjustment level of the user program
is not changed.)

1) The print engine section must be properly adjusted. (ADJ M1 –

M16)

2) CCD gamma adjustment must be properly adjusted. (ADJ

M17/ADJ 1)

3) When setting the color patch image (adjustment pattern)

paper on the original table, place 5 sheets of white paper on
the color patch image paper.

4) Be sure to use the specified color paper.

Before execution of the copy quality check and the copy qual-
ity adjustment, be sure to execute the following corrections
forcibly to set the image forming section to the optimum state.

• Execute the process correction forcibly. (SIM 44-6)

• Execute the half-tone image correction forcibly. (SIM 44-26)

1) Enter the SIM 46-24 mode.

2) Select A3 or 11 x 17 paper (auto select) and press the EXE-

CUTE key.

The color patch image (adjustment pattern) is printed.

3) Set the color patch image (adjustment pattern) printed in pro-

cedure 2) on the original table so that the dark density side of
the color patch image comes to the left side. Place 5 sheets of
white paper on the color patch image (adjustment pattern)
paper.

4) Press the FACTORY key on the operation panel and press the

EXECUTE key.

The copy color balance adjustment (step 1) is automatically
performed, and the color balance check patch image is
printed. Wait for a while until the operation menu of procedure
5) is displayed.

When the color balance is customized by the manual color
balance (SIM 46-21) according to the user's request and then
the color balance is registered as the service target by SIM 63-
7, select the service target in order to adjust to that color bal-
ance.

NOTE: (Descriptions on the factory and the service key button in

the color balance automatic adjustment menu)

There are two kinds of gamma targets for the color bal-
ance automatic adjustment: factory and service. The fac-
tory key button and the service key button are used to
select between them.

Factory target gamma: Standard color balance (Fixed)

Service target gamma: Color balance can be customized
according to the user request. (Variable)

When shipping from the factory, the service target gamma
data are same as the factory target gamma data.

Both are set to the standard color balance gamma.

In the service target, a customized color balance can be
registered with SIM 63-7. In the factory target, it cannot be
changed.

5) Press the REPEAT key on the operation panel.

6) Press the EXECUTE key.

The color patch image (adjustment pattern) is printed.

7) Set the color patch image (adjustment pattern) printed in pro-

cedure 6) on the original table so that the darker density side
comes to the left side. Place 5 sheets of white paper on the
color patch image (adjustment pattern) paper.

8) Press the EXECUTE key.

The copy color balance adjustment (step 2) is automatically
performed, and the color balance check patch image is
printed.

Wait for a while until the operation menu of procedure 9) is dis-
played.

AR-C330  SETTING AND ADJUSTMENTS  7 - 28

9) Press the OK key on the operation panel.

The initial setup of half tone image correction is performed
according to this adjustment data.

NOTE: When OK key is pressed, initial setup of half-tone image

correction is started. During this operation, "Copy Quality
is being adjusted" is displayed. It takes several minutes to
complete this operation.

After completion of this operation, "Please quit this mode"
is displayed.

Do not cancel the simulation until "Please quit this mode"
is displayed.

10) Check that the color balance check patch image printed at last

is within the specified range shown below.

The print density should vary gradually from the lower density to
the higher density without reversion of changing direction.

The density level of each color should be almost the same.

It is acceptable for patch B not to be copied.

Patch A is not copied. 

Use SIM 46-21 to print the color balance adjustment sheet and
compare each process (CMY) black patch color balance and the
black patch. This allows a correct check on the color balance
adjustment result.

If the color balance of each process (CMY) black patch in A – O is
near the black patch referring to the patch patch, it is judged that
the color balance has been correctly adjusted.

If, however, the user requests to customize the color balance
instead of using the standard color balance and the color balance
is in a satisfactory level, go to Step 11).

If the color balance is not satisfactory, perform the manual color
balance adjustment (ADJ M17/ADJ 3).

11) Execute the half tone image correction. (Forcible execution)

(SIM 44-26)

When EXECUTE key is pressed, it is highlighted and the opera-
tion is started. It takes several minutes to complete the operation.
When the operation is completed, the screen returns to the origi-
nal state.

After completion of the operation, cancel the simulation.

12) Use the test chart UKOG-0283FCZZ and check the copy color

balance and the density in Text/Photo mode. (Refer to the
section of the copy color balance and the density.)

If the copy color balance and density are not in the satisfactory
level, perform the following procedures.

13) Perform initial setup of half tone image correction. (SIM 44-21)

14) Perform half tone image correction. (Forcible execution) (SIM

44-26)

15) Use the test chart UKOG-0283FCZZ and check the copy color

balance and the density in Text/Printed photo mode. (Refer to
the section of the copy color balance and the density.)

Repeat procedures 13) – 15) until they are at the satisfactory level.

However, repetition is limited to three times.

If repetition of the above procedures does not set the copy color
balance and the density to the specified level, there may be some
other reason.

Investigate the reason and repair or fix the problem, then perform
all the procedures of print quality adjustment from the beginning.

If the above conditions are not satisfied, perform the manual
adjustment (SIM 46-21) (ADJ M17/ADJ 3).

NOTE: This adjustment is based on the service target color bal-

ance set with SIM 63-7 or 63-8. If, therefore, the above
simulation is not completed normally, this adjustment will
not be completed normally. 

1) Enter the user program mode.

2) Enter the copy mode.

3) Press the auto color calibration key.

Max

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

C

M

Y

Bk

Fig. 1 PG image

High density

Low density

1) The max. density
     section is not blurred.

3) Patch for each of C, M, Y, BK

The patch density is identical between patches or not
reversed.
The patch density is changed gradually.

2) B - E patches of each color of
    Y, C, M, and Bk are copied very
     slightly.

Patch A of each Y/M/C/K color is not copied.

Max

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

C

M

Y

Bk

Fig. 1 PG image

High density

Low density

CMY
mixed
color

1) The max. density
     section is not blurred.

5) The gray balance for CMY mixed color
    patch is not shifted so much.

4) Patch for each of C, M, Y, BK

The patch density is identical between patches or not
reversed.
The patch density is changed gradually.

3) B - E patches of each color of
    Y, C, M, and Bk are copied very
     slightly.

2) Patch A of each Y/M/C/Bk
    color is not copied.

6) There is not so great 
    difference between
    CMY mixed color and
    BK monochrome.

AR-C330  SETTING AND ADJUSTMENTS  7 - 29

4) Press the EXECUTE key.

The color patch image (adjustment pattern) is printed.

5) Set the color patch image (adjustment pattern) printed in pro-

cedure 4) on the original table so that the darker density side
comes to the left side. Place 5 sheets of white paper on the
color patch image (adjustment pattern) paper.

6) Press the EXECUTE key.

The copy color balance adjustment (step 2) is automatically
performed. After completion of the adjustment, the display
returns to the original menu.

This adjustment must be performed in the following cases:

• When a consumable part (developer, OPC drum, the transfer

belt) is replaced.

• When the CCD unit is replaced.

• When the scanner (reading) section is cleaned.

• When a U2 trouble occurs. 

• When the ICU main PWB is replaced.

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

The color balance adjustment (Manual) is used to manually adjust
each color copy density (C, Y, M, K) (15 points for each color)
when the result of the previous automatic adjustment is unsatis-
factory or when a fine adjustment is required, or when the user
requests to change (customize) the color balance.

This adjustment is performed only for the color patch whose result
of the previous automatic adjustment is unsatisfactory.

If the color balance is out of the normal conditions, execute SIM
46-24 to make the color balance adjustment (Manual) and then
execute this adjustment. This sequence leads to a better work effi-
ciency.

Before execution of the copy quality check and the copy quality
adjustment, be sure to execute the following corrections forcibly to
set the image forming section to the optimum state.

• Execute the process correction forcibly. (SIM 44-6)

• Execute the half-tone image correction forcibly. (SIM 44-26)

∗

Before executing the copy color balance adjustment (Manual),
perform SIM 44-6 to make a compulsory process correction,
updating the developing bias voltage and the main charger volt-
age to the latest levels.

When EXECUTE key is pressed, the operation is started.

It takes several minutes to complete the operation. When the
operation is completed, "COMPLETE" is highlighted.

After completion of the operation, cancel the simulation.

1) Enter the SIM 46-21 mode.

2) Select PAPER SEL with the scroll key and select A3 (11 x 17)

paper.

Enter the set value corresponding to the paper feed section
with A3 (11 x 17) paper in it, and press the OK key.

3) Press the [EXECUTE] key.

The color balance adjustment pattern is printed.

4) Check that the printed pattern is in the following specification

or in the desired color balance.

If not, perform the following procedures.

Max

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

C

M

Y

Bk

Fig. 1 PG image

High density

Low density

CMY
mixed
color

1) The max. density
     section is not blurred.

5) The gray balance for CMY mixed color
    patch is not shifted so much.

4) Patch for each of C, M, Y, BK

The patch density is identical between patches or not
reversed.
The patch density is changed gradually.

3) B - E patches of each color of
    Y, C, M, and Bk are copied very
     slightly.

2) Patch A of each Y/M/C/Bk
    color is not copied.

6) There is not so great 
    difference between
    CMY mixed color and
    BK monochrome.