Epson 440 Manuale Utente

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Chapter 4 Adjustment
Rev. A
4-9
4.2.2.4  Head Angular Adjustment
The head angular means the angle at which the printhead unit installed on the carriage assembly against
the carriage movement direction and the printhead must be parallel with the carriage movement direction so
that the lines printed with each nozzle are evenly positioned. Therefore, this adjustment should be made
when the following service is made:
Replacing or removing the printhead unit
The head angular actually set by the adjust lever installed on the carriage assembly and the program print
the check pattern to see the level of head angular.
1.  Before performing this adjustment, be sure to perform “VH Setting” (Refer to section 4.2.2.3)
2.  At the main menu [SCREEN-4], input “3” to select “Angular Adjust Print” and press ENTER key.
3.  Check to see if the lines printed in MAGENTA color is positioned in the middle of two BLACK
 lines with the check pattern printed by the program. If the position of MAGENTA lines are
 incorrect, input “K” at the main menu and the carriage assembly moves to the middle of the printer.
 Then, loosen a screw (No.3) fixing “FASTNER, HEAD” and shift the position of angular adjust
 level located at the right bottom of the carriage assembly to either forward (move MAGENTA
 line to down) or backward (move MAGENTA line to up).
4.  After adjusting the position of angular adjust lever, input “3” to print the check pattern and
 verify the angular level. If the level is still not correct, repeat the step 3.
5.  If the level is correct, input “K” again and tighten a screw to fix “FASTNER, HEAD”. Then, at
 the menu [SCREEN-6], input “Y” and press ENTER key to complete the adjustment.
 
BLACK line
MAGENTA line
Printed pattern
Printed pattern
Angular Adjust Lever
(Right bottom of the Carriage Assembly)
Shift the lever to:
Forward
Shift the lever to:
Backward
Figure 4-6. Head Angular Adjustment