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, remove any jammed paper. Paper Jams(P. 271)
Have the Toner 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: Press 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.
●
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
warranty. 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.
●
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 password has expired.
Set a new password.
Troubleshooting
327
Summary of Contents for imageCLASS LBP121dn
Page 1: ...imageCLASS LBP122dw LBP121dn User s Guide USRMA 7917 00 2023 02 en Copyright CANON INC 2023 ...
Page 7: ...Notice 358 Trademarks and Copyrights 359 Third party Software 361 VI ...
Page 47: ... Shared Key Encryption for WPA WPA2 TKIP AES CCMP IEEE 802 1X Authentication Setting Up 40 ...
Page 65: ... The settings are applied Setting Up 58 ...
Page 100: ...Paper with logo in landscape orientation Basic Operations 93 ...
Page 105: ... The custom paper is registered Basic Operations 98 ...
Page 138: ...6 Log out from Remote UI Linking with Mobile Devices 131 ...
Page 159: ...8 Log out from Remote UI Security 152 ...
Page 207: ... Off On Settings Menu Items 200 ...
Page 250: ... Off On Settings Menu Items 243 ...
Page 284: ... When you select On the printing speed may decrease Troubleshooting 277 ...
Page 353: ...Manual Display Settings 95LW 08H Appendix 346 ...