Sharp MX-C250 Service Manual page 76

4) Press [START] key.
The color balance and the density are automatically adjusted.
The adjustment pattern is printed out. Check it for any abnor-
mality.
5) Press [OK] key.
The list of the adjustment items (for each dither) is displayed.
6) Select an adjustment item (for each dither).
Select item (Mode/
Image)
1
Heavy Paper* Adjustment item to improve the color balance
in the heavy paper mode
Color ED Adjustment item to improve the density and
gradation in the color text mode and the text/
photo printing mode.
B/W ED Adjustment item to improve the density and
gradation in the monochrome text mode and
the text/photo printing mode.
B/W 600dpi Adjustment item to improve the density and
gradation in the monochrome text mode and
the text/photo printing mode.
*1: When performing adjustments in the heavy paper mode,
load paper in the manual paper feed tray.
7) Press [START] key.
A4/11" x 8.5" paper is automatically selected.
The patch image (adjustment pattern) is printed out.
In the monochrome mode, only the monochrome pattern is
printed.
8) Set the patch image (adjustment pattern) printed in the proce-
dure 7) on the document table so that the tint color on the
printed patch image (adjustment pattern) are on the left side.
Place 5 sheets of white paper on the printed patch image
(adjustment pattern).
9) Press [START] key.
The color balance and the density are automatically adjusted,
and the machine goes to the state of procedure 6).
To complete the adjustment and enable the adjustment result,
press [OK] key.
10) Make a copy, and check the copy image quality.
Use SIM46-52 to reset the adjustment values to the default values.
Content
MX-C250 ADJUSTMENTS 5 – 42
ADJ 10
Printer color balance/density
adjustment (No need to adjust
normally)
10-A Printer color balance adjustment (Manual
adjustment) (No need to adjust normally)
This adjustment is needed in the following situations:
* Even if the automatic adjustment is done, copy color balance
adjustment is not proper result.
* Even if the auto adjustment is done properly, the customer asks
you to adjust the copy color. And more, even if RGB adjustment
of copy function is done, the copy color is not improved.
a. General
The color balance adjustment (Manual adjustment) is used to
adjust the copy density of CMYK. This is used at the following situ-
ation. When the result of auto adjustment described above is not
existing within the range of reference. When a fine adjustment is
required. When there is request from the user for changing (cus-
tomizing) the color balance.
This manual adjustment is executed only for
adjusted properly in the automatic adjustment.
If the color balance is improper, execute the automatic color bal-
ance adjustment in advance, and execute this adjustment for better
efficiency.
b. Note for the color balance adjustment (Manual adjustment)
1) After execution of the copy color balance/density adjustment.
2) For the color balance adjustment, use the recommended color
paper. (For the recommended paper, refer to [2].)
If the other kind of paper is used for the color balance adjust-
ment, the proper image quality (color balance, density) may
not be obtained.
c. Adjustment procedure
1) Enter the 67-25 mode.
Sim67-25 PRT CL BLNC MAN
1 K
2 C
3 M
1 /2
Sim67-25 PRT CL BLNC MAN
1 POINT01
2 POINT02
3 POINT03
1 /6 [ 1 – 999]
2) Select the adjustment point with [UP] or [DOWN] keys.
3) Input the adjustment value with 10 keys and press [OK] key.
Adjustment value can be set in the range of 1 to 255. When
the auto color balance adjustment is done by SIM 46-24, The
adjustment value in this mode becomes 128.
which could not
00 0
[OK]
128
128
128
128
1