Top Margin Adjustment; Bi-D 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

5.2.2 Top Margin Adjustment

Patterns are printed as shown below.
Figure 5-3. Top Margin adjustment Pattern Printing
[Judgment method]
Measure the distance from Paper top edge to the adjustment line, and check that it is
with in 3±1mm.
[Corrective action]
With the adjustment program, select adjustment value "+2","+1","-1","-2" and adjust
the deviation. (Each adjustment value shifts the line by 0.85 mm.)
ADJUSTMENT
Top Pattern Paper
3±1 mm
TOF Line
Adjustment by Using Adjustment Program

5.2.3 Bi-D Adjustment

8 types of the pattern below, each dot size (ECO/VSD1/VSD2/VSD3) x color (Black/
Color) are printed.
-7
-1 -5
Figure 5-4. Bi-D 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
-2
1 2 3
-1
0
Gap
OK NG
OK NG
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