Apple ColorLaserWriter 12/600PS - Manual (Page 348)

Regular maintenance
For information about ordering replacement supplies, see Appendix A.
Low toner
If a toner cartridge is low or empty, the printer keeps working but print
quality suffers.
When you see these lights, it can mean one of two things:
m The toner powder needs to be redistributed inside the toner cartridge. For
instructions, see Chapter 10.
m The cartridge needs to be replaced. Instructions for replacing a toner
cartridge come in the package with the new cartridge.
If the light comes on in the middle of a printing job, and the output is still
satisfactory, continue printing if you wish. You won’t harm the printer by
doing so.
M
!
C
Y Bk
When toner is low, the Alert light glows
and a toner light comes on.
A light indicates
which color is low.
328 Appendix G