Canon imageCLASS LBP121dn - Page 334

Cannot print RX data.
Received data cannot be printed for some reason.
Do the Cause and Solution Appear on the Operation Panel?
If so, follow the instructions on the screen.
Is the Front Cover, Rear Cover, or Toner Cover Open on the Machine?
Close the covers if they are open.
Is Paper Loaded?
Load paper if not loaded. Loading Paper(P. 87)
Is Paper Jammed?
If so, r
emove any jammed paper.
Paper Jams(P. 271)
Have the T
oner Cartridge Reached the End of Their Lifetime?
Check the remaining amount of toner in the toner cartridge, and replace any toner cartridge, as needed.
Checking the Remaining Amount of Consumables(P. 262)
Replacing the Toner Cartridge(P. 257)
Cart. Comm. Error Cannot print. A non-Canon or counterfeit cartridge may
be in use. Close: Pr
ess OK
Printing cannot be performed due to incorrect installation of the toner cartridge, a damaged toner cartridge, or the
use of a toner cartridge whose print quality cannot be guaranteed.
Reinstall the Toner Cartridge or Replace with New Toner Cartridge.
Replacing the Toner Cartridge(P. 257)
● For
optimum print quality, using Canon genuine toner cartridges is recommended.
List of
Consumables
(P. 263)
● If the message still appears after repeatedly reinstalling the toner cartridge, contact your dealer or service
representative.
If the Problem Persists(P. 339)
Cartridge Comm. Error Problems caused by non-Canon cart. not covered by
warr
anty. Close: Press OK
Printing cannot be performed due to incorrect installation of the toner cartridge, a damaged toner cartridge, or the
use of a non-Canon toner cartridge, resulting in a communication error.
Reinstall the Toner Cartridge.
Replacing the Toner Cartridge(P. 257)
● For
optimum print quality, using Canon genuine toner cartridges is recommended.
List of
Consumables
(P. 263)
● If the message still appears after repeatedly reinstalling the toner cartridge, contact your dealer or service
representative.
If the Problem Persists(P. 339)
Change the authentication password.
The passwor
d has expired.
Set a new password.
Troubleshooting
327