Canon L280 Software User's Manual page 51

❏ Did a toner low warning appear while printing?
If you want to continue printing your document, even though you are
low on toner, change the TONER SUPPLY LOW setting on the printer
from RX TO MEMORY to KEEP PRINTING. (Even if the toner cartridge
is out of toner, the document will not be stored in memory.)
❏ Do vertical white streaks appear?
Vertical white streaks may appear when the error message REPLACE
CARTRIDGE is displayed. This situation indicates that the toner level is
low or that the toner is unevenly distributed in the cartridge.
To resolve the situation, open the printer cover and remove the toner
cartridge. Gently rock the cartridge from side to side five or six times to
evenly distribute the toner inside. Replace the cartridge in the printer, and
close the printer cover.
If redistributing the toner does not resolve the situation, replace your
cartridge.
4-8 Frequently Asked Questions Chapter 4