User Manual

EPSON Stylus Color 440/640/740 Revision A
Chapter 5 Adjustment 151
5.2.2.9 Bi-D Adjustment
You perform this adjustment to correct differences in printing positions,
which is caused by slippage of printing timing in right and left directions
during the Bi-directional printing. Therefore, you are required to perform
this adjustment after performing the following operations.
Replacing the Print mechanism
Replacing the main board
Replacing the CR motor
Replacing the Carriage Assembly
Replacing g the Printhead
1.
Apply the main menu (Figure 5-21). (See Section 5.2.2.2.)
2.
By using the Up/Down arrow key, select
Adjustment
in the main
menu.
3.
By using the Up/Down arrow key, select
Bi-Directional
Adjustment
in the adjustment menu. (See Figure 5-19.) The
following screen appears.
Figure 5-32. Bi-D Adjustment Menu
4.
By using the Up/Down arrow key, select
Print the Bi-D adjustment
pattern
on the screen, and the screen bellow appears.
Figure 5-33. Before Printing the Bi-D pattern
5.
Press the Enter key. The printer starts printing a Bi-D adjustment
pattern. (See the sample pattern in the following page.)
NOTE:
As shown in the sample, gaps between passes are sometimes created
in different directions among patterns.
This unexpected change in direction is caused by an ink jet printer-
specific reason, which is an ink jet printer inevitably performs a
periodical cleaning specified by the flashing timer even during Bi-D
pattern printing, so that the printing direction suddenly changes.
However, this directional difference among Bi-D patterns should not be
considered, and you can always confirm and adjust the pattern correctly
by referring to gap amount only.
M S-D O S Prom pt-SC 640
Auto
Bi-D irectional Adjustm ent
E s c : P re v io u s U p /D o w n : S e le c t E n te r: O K
Print the Bi-D adjustm ent pattern
Adjust
C heck present adjustm ent data
N o te :
The inform ation provided in this service tool is com m on for the Stylus C olor 440, 640,
and 740 except for som e printer specific inform ation such as ink counter lim its.
M S-D O S P rom pt-SC 640
Auto
E s c : P re v io u s E n te r: O K
Print a Bi-D adjustm ent pattern for the present data?
200 C PS: present data -2, present data, present data +2
Note:
The inform ation provided in this service tool is com m on for the Stylus C olor 440, 640,
and 740 except for som e printer specific inform ation such as ink counter lim its.