Epson EPL-N2700 Quick Reference Manual page 16

To correct this error, (1) press the Continue button, or
(2) turn off the printer, then remove the ROM from slot
A.
Format Error ROM B
A ROM module which is not formatted is inserted in slot
B. If the ROM had been written to, it is possible that the
writing was not completed. Also, the ROM's memory
may be no longer accessible, in which case you should
replace it.
To correct this error, (1) press the Continue button, or
(2) turn off the printer, then remove the ROM from slot B.
Form Feed
When the printer is off line and data remains in the
printer's memory, press the Form Feed button to print
out the data and clear the buffer. After printing, Ready
appears on the LCD panel.
Image Optimum
The printer cannot print at the requested quality level
because of insufficient memory, and the printer reduces
the quality automatically so that it can continue printing.
Check to see if the printout is acceptable. If not, add more
memory (for a permanent solution) or temporarily set
Device Resolution to Low (300 dpi) and Page Protect to
Auto in the driver.
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