Epson EPL-6100 Reference Manual page 200

Note:
When printing with manual feed, take out the paper loaded into
other paper sources.
You have to press the N Start/Stop button when printing on the
first sheet. After pressing the button once, the paper is fed
automatically.
For detailed information on the manual feed mode, see "Loading
the Manual Feed slot" on page 19.
Optional Interface Card Error
Control panel:
The printer cannot read the installed optional interface card. Turn
off the printer and try reinstalling the card. If the error persists,
you may have to contact a qualified service representative for
assistance.
Page contains too much data to process
Control panel: ~ light on, Error light flashing
The time required to process data exceeds the print engine speed
because the volume of data is too great to print. Press the N
Start/Stop button to resume printing. If this message appears
again, change the Page Protect setting to On.
Paper Out
98 Troubleshooting
light flashing, Error light on
~