AR-P16 (serv.man3). Service manual - Sharp Copying Equipment Service Manual (repair manual). Page 22

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AR-P16  COLOR BALANCE ADJUSTMENT  9 - 1
[9] COLOR BALANCE ADJUSTMENT
1. Outline
The printer color balance adjustment is used to manually adjust grada-
tion of Cyan, Magenta, Yellow, and Black in each level of low, medium,
and high density.
The color balance adjustment in the printer mode is generally per-
formed by the user. However, a serviceman can perform this adjust-
ment more accurately by use of the test chart for servicing.
2. Purpose
As the printer is used, ambient conditions and the depletion of consum-
ables (the toner cartridge and drum cartridge) can gradually cause
changes to occur in the four color components of color images, cyan,
ma-genta, yellow, and black. This results in deviations in the color bal-
ance.
These deviations in the color balance occur gradually over a long
period of time. Ambient conditions (tem-perature and humidity) and the
number of times the printer is used can have a large effect on color
devia-tion.
The printer has two color adjustment functions for the purpose of cor-
recting deviations in the color balance.
These functions are executed from the key operator programs.
3. Execution conditions
Be sure to perform this adjustment when consumable part is replaced.
For execution of this adjustment, the print engine section must be in
the normal condition. (All the adjustment items related to the print
engine section must have been adjusted properly.)
4. Color balance adjustment mode
The printer has the following two color balance adjustment functions:
(1) Color balance adjustment
This function is used to adjust each of the density levels (low, mid, and
high) of the four color components, cyan, magenta, yellow and black. 
Use this mode when the color deviation is large.
(2) Easy calibration (Gray balance adjustment)
This mode is used for fine adjustment of the gray balance at the mid
density level of the colors cyan, magenta, and yellow.
Use this mode to correct minor color deviations.
5. Color balance adjustment flow
Test print: Used to check the current color balance and the gray level
adjustment state. By executing this adjustment, the test page is
printed.
(Preparation of the test chart)
Cut off the sections between two rows of the test pattern as shown
below cutter.
6. Adjustment details
A. Color balance adjustment
1) Enter the key operator program mode. 
2) Select "Printer setting."
3) Select "Color adjustments."
4) Select "Color balance setting."
Use the key operator program on page 3 of the Key Operator’s Guide to 
print a test page
Do the colors on the test page match the colors on the standard color 
chart included with the printer?
No
Yes
          How much do the colors differ?
Large difference
Small difference
Using the Color Balance 
setings
Using Easy Calibration
Print a test page
Color balance is successfully adjusted
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