Head Angular Adjustment - Epson Artisan 810 Service Manual

Epson Artisan 810/835/837/710/725/730/Epson Stylus Photo PX810FW/TX810FW/PX820FWD/TX820FWD/PX830FWD/PX710W/TX710W/PX720WD/TX720WD/PX730WD/TX730WD

5.2.4 Head Angular Adjustment

Two patterns are printed as shown below.
Band pattern
The following pattern is printed. The lines below "1 to 80" are printed while the
carriage moves from the home to the other side, and lines below "80 to 1" are printed
while the carriage returns to the home.
0-column => 80 column case
0
2
4
6
Figure 5-4. Head Angular Adjustment Printout Pattern (1)
How to Judge
Examine the printout patterns for both "0>>80" and "0<<80", and enter the values of
the most straight lines.
Additional information
If the most straight lines are found on the pattern of either end, reassemble the
Printhead and carry out this adjustment again.
ADJUSTMENT
80-column => 0 column case
8 0
2
4
6
Adjustment Using Adjustment Program
Example for judgement
C H E C K
P O I N T
Microweave Pattern
8
+3 +2
Figure 5-5. Head angular adjustment Pattern Printing (2)
How to Judge
Examine the printout patterns (+2 to -2) and select the value for the group of which the
gaps between the 2 color bars are the smallest.
Additional information
If the least gap pattern is found on either end, reassemble/replace the Printhead.
Example for judgement
C H E C K
P O I N T
NG OK
+1 0 -1 -2
OK NG
Revision G
-3
Gap
215
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