Epson EPL-6100 Reference Manual page 198

A controller error has been detected. Turn off the printer, wait 5
seconds and then turn it back on. If all the lights come on again,
turn off the printer, unplug the power cord, and contact a
qualified service representative.
Service Required (engine error)
Control panel: Data, Ready, and Error lights on
A print engine error has been detected. Turn off the printer, wait
5 seconds and then turn it back on. If the lights come on again,
turn off the printer, unplug the power cord, and contact a
qualified service representative.
Exiting paper jam
Control panel: m and Error lights on
Indicates that there may be a paper jam inside the printer. Open
the printer cover, remove any jammed paper, and close the printer
cover. The error will automatically clear itself and the jammed
page's print data is reprinted.
Feed Jam
Control panel: m and Error lights on
Indicates that there is a paper jam in the feed slot. See "Clearing
Jammed Paper" on page 105 for instructions on clearing paper
jams. The error is automatically resolved upon clearing the
jammed paper and opening and closing the printer cover.
96 Troubleshooting