Epson WorkForce AL-MX300DN - Manual (Page 180)

3. Remove the toner cartridge.
4. Rock the toner cartridge back and forth a few times.
5. Reinsert the toner cartridge, and turn the lock lever to the lock position.
6. Close cover A.
If this error persists, consult a qualified service representative.
Sleep (while the Power Saving button is lighting)
The printer is currently in power-save mode. This mode is canceled when the printer receives job
data.
Specified folder could not be opened
Saving data to the specified shared folder on the network failed because the specified folder could not
be opened. Check if the folder path, user name, or password specified in Folder Address of the
Address Settings
is correct.
Specified save dest cannot be used
Saving data to the specified shared folder on the network failed. Unsupported characters are used to
specify the destination.
Testing e-mail transmission
The connection test is carried out. The printer is testing to e-mail to the specified address.
The specified user name cannot be used
AL-MX300 Series User's Guide
Using the Control Panel 180