Epson ET-5800 Series User Manual page 251

Solving Problems
Original is too thin to detect the size automatically.
Select the original size manually, and then try again.
Uneven Colors, Smears, Dots, or Straight Lines Appear in the Copied Image
The following causes can be considered.
The paper path is dirty.
Load and eject paper without printing to clean the paper path.
Related Information
"Cleaning the Paper Path for Ink Smears" on page 151
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There is dust or dirt on the originals or the scanner glass.
Remove any dust or dirt that adheres to the originals, and clean the scanner glass.
Related Information
"Cleaning the Scanner Glass" on page 151
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There is dust or dirt on the ADF or originals.
Clean the ADF, and remove any dust or dirt that adheres to the originals.
Related Information
"Cleaning the ADF" on page 152
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The original was pressed with too much force.
If you press with too much force, blurring, smudges, and spots may occur.
Do not press with too much force on the original or the document cover.
Related Information
"Placing Originals" on page 35
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Printing, Copying, Scanning, and Faxing Quality is Poor
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Copy Quality is Poor