Epson EPL-6100 Reference Manual page 204

Print Quality Decreased (due to insufficient memory)
Control panel:
The printer could not print at the requested quality level due to
insufficient memory and automatically reduced the print quality
so that it could continue to print. Check to see if the printout is
acceptable. If not, add more memory for a permanent solution, or
temporarily set print quality lower in the printer driver. Press the
@ Information button on the control panel to clear the warning.
Toner Low
Control panel:
The printer is almost out of toner. Prepare a new developer
cartridge to replace the current one. See "Replacing the Developer
Cartridge" on page 73.
Cancel All Print Job
Control panel:
Indicates that the printer is deleting all the print jobs stored in the
printer.
Cancel Print Job
102 Troubleshooting
light flashing
~
light flashing
v
~ , Ready, and Error lights flashing.