Adjustment By Using Adjustment Program; Head Angular Adjustment - Epson Stylus C58 Service Manual

Epson Stylus C58/C59/ME 2/C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21

5.2 Adjustment by Using Adjustment Program

This section explains how to judge print samples by using the adjustment program.
Follow the instructions of the adjustment program for details of the adjustment methods.

5.2.1 Head angular adjustment

FOR EPSON STYLUS C58/C59/ME2 AND EPSON STYLUS C79/D78
Patterns are printed as shown below.
Sample of Head Angular band pattern :
NG -3 -2 -1
Figure 5-1. Head angular adjustment Pattern Printing
[Judgment method]
Find the pattern with least vertical displacement between -3 and 3, and enter the value
of that pattern.
[Corrective action]
If the "NG" on both ends are the ones with least vertical displacement, reassemble/
replace the Head, and carry out the adjustment again.
The diagram below shows the OK and NG patterns.
C H E C K
P O I N T
NG
ADJUSTMENT
0 1 2 3 NG
OK
Adjustment by Using Adjustment Program
FOR EPSON STYLUS C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/
T11/ME 30/T21/T24/T27/S21
Patterns are printed as shown below.
-5 -7
-1
Figure 5-2. Head angular adjustment Pattern Printing
[Judgment method]
Find the pattern with no gaps or overleaps of the left and right pattern, and enter the
value of that pattern.
[Corrective action]
If an appropriate pattern is not printed, enter the nearest value and then print the
patterns again.
The diagram below shows the OK and NG patterns.
C H E C K
P O I N T
Overlap
NG
NG
Revision E
3
1 2
-1
Gap
OK NG
OK NG
Confidential
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