Improving Print Quality - Epson Stylus Pro 7800 Printer Manual

154 | Solving Problems
Message
SENSOR ERROR
LOAD DIFFERENT PAPER
SERVICE CALL ERROR
UNABLE TO PRINT
MAKE SURE PAPER IS
LOADED
Problem
Your print has
horizontal banding.
Explanation
The loaded paper does not
match the selected paper type
(roll or sheet).
The print head is locked.
An error has occurred.
An error may be occurring
when you try to print patterns
such as a nozzle check.

Improving Print Quality

You can often improve print quality by doing the following:
Run a nozzle check and cleaning cycle. See page 122 for instructions.
•
Align the print head. See page 126 for instructions.
•
When you send a print job, make sure your print options are set
•
correctly. For more information, see Chapter 3 (Macintosh) or
Chapter 4 (Windows).
If none of these suggestions help, try the solutions on the following pages.
Solution
◗ Check the ink indicators and light to see if you are low on ink. Replace ink
cartridges if necessary, as described on page 127.
◗ Run a nozzle check and cleaning cycle. See page 122 for instructions.
◗ Turn off High Speed in your Advanced settings.
◗ Make sure the Media Type setting in the printer software is correct for the media
you're printing on.
◗ If you're using cut sheet media, make sure the printable side is face up.
◗ Choose a higher resolution, such as SuperPhoto - 2880dpi.
Response
Press the l Paper Source button to select the
correct paper type (roll or sheet).
Remove the bracket securing the print head;
see page 33.
Note the error number, then turn the printer
off. Unplug the printer and wait 30 seconds.
Then plug it in and turn it back on. If the
message remains, contact Epson as described
on page 11.
Exit the Test Print menu, and check for low ink
or incorrectly loaded paper.
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