Epson Pro 9000 Printer Manual page 78

Print quality problems
Problem
Your print has
horizontal banding.
Your print has vertical
misalignment or
banding.
Colors are incorrect or
missing.
Possible cause
Print head nozzles are clogged.
The print head is out of
alignment.
You're printing at 720 dpi.
You're using the High Speed
(Bi-directional) setting.
Print options are set incorrectly
for the media you're using.
You're printing on the wrong side
of the paper or other media.
Your ink supply is too old.
The print head is out of
alignment.
You're using the High Speed
(Bi-directional) setting.
Print options are set incorrectly
for the media you're using.
You're printing on the wrong side
of the paper or other media.
Print head nozzles are clogged.
The color settings in your
application or print options are
incorrect.
Solution
Run a nozzle check and cleaning cycle (page 3-1).
Align the print head, as described on page 3-3.
Choose 1440 dpi to eliminate banding.
Turn off the High Speed or Bi-directional setting
in your print options.
Make sure the Print Mode or Media Type setting
is correct for the media you're printing on.
If you're using a cut sheet, make sure the
printable side is face up.
Check the Ink Out lights and replace ink cartridges
if necessary, as described on page 3-7.
Align the print head, as described on page 3-3.
Turn off the High Speed or Bi-directional setting
in your print options.
Make sure the Print Mode or Media Type setting
is correct for the media you're printing on.
If you're using roll paper, make sure it's correctly
attached to the spindle. See page 1-5 for
instructions. If you're using a cut sheet, make sure
the printable side is face up.
Run a nozzle check and cleaning cycle (page 3-1).
Make sure your color settings are correct.
4-3
Resolving Problems | 4-3