Epson WorkForce WF-7830 Series User Manual page 216

Solving Problems
The print head nozzles may be clogged.
Solutions
Use the Print Quality Adjustment feature. If you have not used the printer for a long time, the print head
nozzles may be clogged and ink drops may not be discharged.
"Adjusting the Print Quality" on page 123
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The print settings and the paper size loaded in the printer are different.
Solutions
Change the print settings according to the paper size loaded in the paper cassette. Load paper in the
paper cassette that matches the print settings.
Multiple sheets of paper are fed into the printer at the same time.
Solutions
See the following to prevent multiple sheets of paper being fed into the printer at the same time.
"Several Sheets of Paper are Fed at a Time" on page 143
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Paper Is Smeared or Scuffed
The following causes can be considered.
Paper is loaded incorrectly.
Solutions
When horizontal banding (perpendicular to the printing direction) appears, or the top or bottom of the
paper is smeared, load paper in the correct direction and slide the edge guides to the edges of the paper.
"Loading Paper" on page 31
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The paper path is smeared.
Solutions
When vertical banding (horizontal to the printing direction) appears, or the paper is smeared, clean the
paper path.
"Cleaning the Paper Path for Ink Smears" on page 126
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The paper is curled.
Solutions
Place the paper on a flat surface to check if it is curled. If it is, flatten it.
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Printing, Copying, Scanning, and Faxing Quality is Poor
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Copy Quality is Poor