Epson Stylus COLOR 900 Service Manual page 135

EPSON Stylus COLOR 900/900N
4. Select Print the head angular adjustment pattern. The following
test pattern prints, and the printer automatically ejects the page.
Figure 5-14. Printed Test Pattern
5. If the test pattern forms two solid H-shaped figures with no white
vertical lines or bands in them, then the head angle setting is correct
and no further adjustment is necessary. Press Esc repeatedly to
return to the main menu or exit the program.
Otherwise, if you see any vertical bands in the pattern, no matter
how faint, you need to adjust the printhead angle. Proceed to the
next section.
5.2.5.2 Adjusting the Printhead Angle
T
When you perform this adjustment, the printhead has
C A U T I O N
to be moved away from its capping position. Do not
let the printhead remain in this position too long, or
its nozzle surface will dry out and you'll have to
spend extra time cleaning the printhead.
T
An internal error occurs if the printer sits idle or
receives no commands during this adjustment for
more than three minutes. When this happens, the
carriage lock lever gets stuck and an error recovery
message appears on screen:
Error Recovery
Message
Figure 5-15. Error Recovery Message
When you see this message, press Enter . This sends
a command to the printer to execute the head
cleaning sequence (CL1), which lets the printer
recover from the error. When the cleaning sequence
finishes, you can continue performing the adjustment
as usual.
Chapter 5 Adjustments
132