Epson Stylus Photo R290, Service Manual, Page: 102 / 125

EPSON Stylus Photo R280/R285/R290 Revision B
Chapter 5 Adjustment 5.2 Using the Adjustment Program 102
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Microweave Pattern
Figure 5-3. Head Angular Adjustment (Microweave) Pattern
How to Judge
Examine the pr3 to -3 patterns and select the value for the group of which the
gaps between the 2 color bars are the smallest.
Additional information
If no appropriate pattern is found, reassemble/replace the Print Head.
5.2.3 Bi-D Adjustment
The pattern shown below is printed for each of the 7 print modes.
Figure 5-4. Bi-D Adjustment Pattern
How to Judge
Find the pattern with no gaps or overleaps of the left and right pattern, and enter the
value of that pattern.
Additional information
If an appropriate pattern is not printed, enter the nearest value and then print the
patterns again.
C H E C K
P O I N T
Example for judgement
+3 +2 +1 0 -1 -2 -3
NG OK
Gap
C H E C K
P O I N T
Example for judgement
26
27
28 30 32 20 22 24
25
OK NG NG
Gap Overlap