Pf Adjustment - Epson Stylus CX4900 Service Manual

EPSON Stylus CX4900/CX4905/CX5000/DX5000/DX5050/CX5900/CX6000/DX6000/DX6050

5.2.15 PF Adjustment

Adjustment procedure
1. Examine the printed pattern and select a value for each of the top and bottom.
2. Input the value selected in Step 1 and print the PF adjustment check pattern.
3. Check the pattern printed in Step 2 if the correction has been properly
reflected.
4. If the result in Step 3 is NG, return to Step 1 and repeat the adjustment
procedure.
SELECTING THE VALUE FOR THE BEST PATCH
ADJUSTMENT CHECK PATTERN
PF adjustment
Top -6 -4 -2
Bottom -6 -4 -2
Figure 5-6. PF Adjustment Pattern
ADJUSTMENT
and CHECKING THE PF
can be found on the following pages.
0 2 4 6
0 2 4 6
Adjustment by Using Adjustment Program
SELECTING THE VALUE FOR THE BEST PATCH
Procedure
1. Examine the printed patches from the left and select a value for the patch with
least white oblique lines on its upper (top) area. If two or more patches are
found as the best patch, be sure to select a value for the left most one.
Select this
-6 -4 -2
-6 -4 -2
Figure 5-7. PF Adjustment (1)
• If it is difficult to judge, compare the most likely patch with the one on the right.
If you still cannot find any differences in the upper area between the two
patches, input the mean value of the two.
Input the mean value of the two
-4 -3
Figure 5-8. PF Adjustment (2)
Revision A
Do not select this
0 0 2 4 6
0 2 4 6
-2 0
8
8
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