Epson WF-4830 Series User Manual page 227

Solving Problems
Straight Lines Appear when Sending Faxes from the ADF
The following causes can be considered.
There is dust or dirt on the ADF or originals.
Solutions
Clean the ADF, and remove any dust or dirt that adheres to the originals.
"Cleaning the ADF" on page 132
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The Image Quality of the Sent Fax is Poor
The following causes can be considered.
The resolution is set to low.
Solutions
If you do not know the performance of the sender's fax machine, set the following before sending a fax.
❏ Select Fax > Fax Settings and then make the Resolution setting to set the highest quality image.
❏ Select Fax > Fax Settings and then enable Direct Send.
Note that if you set Resolution to Photo but you send the fax without enabling Direct Send, the fax
may be sent at a lower resolution.
ECM setting is disabled.
Solutions
Select Settings > General Settings > Fax Settings > Basic Settings and enable the ECM setting on the
control panel. This may clear errors that occur due to connection problems. Note that the speed of
sending and receiving faxes may be slower than when ECM is disabled.
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Printing, Copying, Scanning, and Faxing Quality is Poor
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The Quality of the Sent Fax is Poor