MX-6240N, MX-7040N (serv.man24). Section 5 Adjustments and Settings - Updated November 2012 - Sharp Copying Equipment Service Manual (repair manual). Page 99

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MX-7040N  ADJUSTMENTS AND SETTINGS  5 – 99
 
22-B
FR density unevenness visual inspection 
correction: 4-point adjustment for each of 
CMYK (with the center fixed) or 31-point 
adjustment (with the center fixed)
This adjustment is required in the following cases:
* When unevenness occurs in the main scanning direction:
1)
Enter the SIM 61-12 mode.
Press [VISUAL INSPECTION] key to go to the density selec-
tion menu.
When [DATA] key is pressed, the current correction value of
"FR density unevenness manual correction" can be checked.
2)
Press the key of the density to be checked and press [EXE-
CUTE] key. The high density process control is started, and
self printing of the adjustment patch is started.
During execution, [EXECUTE] is highlighted.
3)
Select [4POINT CORRECTION]] key or [31POINT CORREC-
TION] key.
To make the adjustment more deliberately, select [31 POINT
CORRECTION].
4)
The screen for entry of the visual inspection measurement
result is displayed.
Enter an adjustment value based on the adjustment patch and
press [EXECUTE] key, and the shading data are revised and
the half tone process control is forcibly executed.
When the value is increased, the density is increased. When
the value is decreased, the density is decreased.
5)
After completion of the adjustment, the adjustment result patch
is automatically outputted and the current correction value is
displayed.
The FR density unevenness can be improved by pressing
[RETRY] key and repeating procedures 3) - 5).
6)
To reset the adjustment values to the default (factory setting),
use SIM61-13 to clear the automatic and manual correction
values.
7)
After completion of all adjustments, be sure to execute SIM46-
74 (Copy color balance adjustment).
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