Epson AcuLaser C9100 Reference Manual page 312

Warming Up
The printer is warming up the machine to be ready to print.
Waste T BoxNearfull
The waste toner collector is near full of toner.
Worn Fuser
This message warns you that the fuser unit is near the end of its
service life. Printing after this message appears is not guaranteed.
Contact your dealer to replace the unit.
Worn IDT Unit
The intermediate transfer unit is near the end of its service life.
You need to prepare a new intermediate transfer unit. Contact
your dealer.
Worn Photoconductor
This message indicates that the photoconductor unit has reached
the end of its service life. Printing after this message appears is
not guaranteed. Turn the printer off, then replace the
photoconductor unit with a new one. See "Photoconductor Unit"
on page 231 for instructions. The error clears automatically after
you replace the unit and close the printer covers.
312
Troubleshooting