Epson Stylus Photo Printer PX800FW, Service Manual

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Epson Artisan 800/Epson Stylus Photo PX800FW/TX800FW/Epson Artisan 700/Epson Stylus Photo PX700W/TX700W Revision C
ADJUSTMENT Adjustment Using Adjustment Program 221
Confidential
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.
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.
† Microweave Pattern
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.
䎓䎃䎡䎡䎃䎛䎓
0
2
4
́ 8
́
́
6
́
0-column => 80 column case
䎓䎃䎟䎟䎃䎛䎓
0
2
4
́ 8
́
́
6
́
80-column => 0 column case
C H E C K
P O I N T
Example for judgement
C H E C K
P O I N T
Example for judgement
NG OK
+3 +2 +1 0 -1 -2 -3
NG OK
Gap
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