Epson AcuLaser C8600 Reference Manual page 330

Reset to Save
A control panel menu setting was changed while the printer was
printing. Press the Start/Stop button to clear this message. The
setting will become effective after printing has finished.
ROM Check
The printer is checking the ROM.
Self Test
The printer is performing a quick internal check.
Service Req xyyy
A controller error or a print engine error has been detected. Turn
off the printer. Wait at least 5 seconds and then turn it back on. If
the error message still appears, write down the error number
listed on the LCD panel (xyyy) and turn off the printer, unplug
the power cord, and contact a qualified service representative.
Standby
The printer is in stand-by mode.
Time exceeded
Paper was forcibly output (blank sheet printing) as the print data
did not arrive in time even though paper was pre-fed.
Toner Cart Out
One or more toner cartridges are not installed in the printer.
Install the cartridges. See "Toner Cartridge" on page 257.
328 Troubleshooting