Adjustment Procedures; Color Balance Adjustment Target Setup - Sharp MX-1810U Service Manual

(2) Adjustment procedures

1) Set the SIT chart (UKOG-0280FCZZ or UKOG-0280FCZ1) to
the reference position on the left rear frame side of the docu-
ment table.
Set the chart so that the lighter density side of the patch is on
the left side.
If the SIT chart is not available, execute SIM 63-5 to set the
CCD gamma to the default. In this case, however, the adjust-
ment accuracy is lower when compared with the adjustment
method using the SIT chart.
Check to insure that the SIT chart (UKOG-0280FCZZ or
UKOG-0280FCZ1) is in close contact with the document table.
UKOG-0280FCZZ is equivalent to UKOG-0280FCZ1.
2) Enter the SIM 63-3 mode and press [EXECUTE] key.
The automatic operation is started. During the adjustment,
[EXECUTE] is highlighted. After completion of the adjustment,
[EXECUTE] returns to the normal display.
MX-3610N ADJUSTMENTS AND SETTINGS 4 – 32
Since the SIT chart (UKOG-0280FCZZ or UKOG-0280FC Z1)
is easily discolored by sunlight (especially ultraviolet rays) and
humidity and temperature, put it in a bag (such as a dark file)
and store in a dark place of low temperature and low humidity.
SET 1 Color balance adjustment target setup
a. General
When the automatic color balance adjustment is executed, a cer-
tain color balance (gamma) is used as the target.
There are following three kinds of the target.
• Factory color balance (gamma) target
• Service color balance (gamma) target
• User color balance (gamma) target
In the above three, only the service color balance target can be set
to a desired level.
This setting is required in the following cases.
* When the color balance and density adjustments are executed
manually (SIM46-21) (SIM67-25)
* U2 trouble has occurred.
* When the MFP PWB is replaced.
* When the EEPROM on the MFP PWB is replaced.
* The scanner control PWB has been replaced.
* The EEPROM on the scanner control PWB has been replaced.
* When the user requests for customizing the color balance.
* When the service color balance target gamma is judged as
improper.
SET 1A Copy color balance adjustment target setup
• Each color balance target for the copy color balance adjustment
Type
A Factory color There are three kinds of the color balance target,
balance (gamma) and each of them is specified according to the
target machine design. Use SIM 63-11 to select one of
them as the factory target. The default setting
(factory setting) is the color balance (DEF1)
which emphasizes color reproduction.
B Service color This target is used when the user requests to
balance (gamma) customize the color balance to user's desired
target level. In advance, the user's unique color
balance must be registered as the service color
balance target. The above registration (setting)
is made by the serviceman with SIM 46-21 to
adjust the color balance and with SIM 63-7 to
register it.
This color balance target is used when the user
executes the color balance adjustment. When,
therefore, the service color balance target is
changed, the color balance target of the user's
color balance adjustment is also changed.
When, however, SIM 63-8 is executed, the color
balance is set to the factory color balance target
set with SIM 63-11. The default setting (factory
setting) of the color balance is same as the
factory color balance target. (Emphasized on
color reproduction (DEF1))
If the user does not request for customizing the
color balance, be sure to use SIM 63-8 to set the
color balance to the factory color balance target.
C User color Same color balance as the service color balance
balance (gamma) (gamma) target When the service color balance
target target is changed, this color balance target is
also changed accordingly.
Descriptions