Epson WorkForce AL-MX300DN - Manual (Page 182)

USB Memory Error
The USB memory may be corrupted or incorrect. Replace it with a new one.
USB Memory Full
There is no space available on the USB memory connected to the printer. Delete data from the USB
memory to create free space, or use a different USB memory.
USB Memory Not Connected
A USB memory is not connected to the printer. Connect a USB memory to the USB Host interface.
USB Memory Write Error
Saving data to the USB memory failed.
USB Memory Write Protect
Unable to save the data to the USB memory. Check that the USB memory connected to the printer is
not read-only.
Using Phone
The external telephone connected to the printer is being used.
Wait for a while and try again
You started printing from a USB memory while multiple jobs are stored in the printer. Wait for a few
minutes, and then try again.
Warming Up
The printer is warming up so that printing, copying, faxing, or scanning can be done.
Write Error ROM P
The printer is unable to write data to the ROM module correctly. You cannot remove the ROM P
because the ROM P is a program ROM module. Contact your dealer.
Writing and saving files to folder
AL-MX300 Series User's Guide
Using the Control Panel 182