Head Angle Adjustment - Epson Stylus COLOR 440 Service Manual

EPSON Stylus COLOR 440, 640, and 740

5.2.2.9 Head Angle Adjustment

The head angle adjustment corrects for manufacturing variations in the
shape of the carriage and the printhead. If this adjustment is not
performed, banding may occur in the printed output. You must perform
this adjustment in the following cases:

After replacing the printhead

After replacing the carriage unit

If you have changed the angle of the adjustment lever
In order to perform the adjustment, you must first print the head angle
check pattern as described below. Then use the adjustment lever,
which is located on the right side of the carriage unit, to set the
printhead angle accordingly.

Before making this adjustment, refer to
C A U T I O N
make any other required adjustments, following the order
listed in the table.

Use only high-quality (720 dpi) ink jet paper for printing
the check pattern because of the high degree of precision
required.
1. Remove the upper housing from the main unit. (See
NOTE: If you prefer, you can perform this adjustment without
removing the upper case. When you need to access
the carriage unit, select "Move the carriage to the head
angular adjustment position" on the screen shown in
Figure 5-26.
2. Enter the main menu (see
Adjustment.
3. In the adjustment menu, select Head Angular Adjustment. The
following screen appears.
Table 5-1 and
4. Select Head Angular Adjustment Pattern and press Enter. The
following screen appears and the printer prints the head angle
adjustment pattern
Section 4.2.1.)
Section
Figure 5-26. Head Angle Adjustment Menu
(Figure 5-28
Figure 5-27. Printing the Head Angle Adjustment Pattern
Chapter 5 Adjustments
5.2.2.3). Then select
on the next page).
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