● A port that is used for Cloud Print may be blocked by a firewall or other protection. Check whether the5222 port is available with your computer.● If a proxy server is used on the network, check whether the proxy settings on the machine and the serverare correct. For details, contact your Network Administrator.Setting a Proxy(P. 247)Cart. communication error. Use of non-Canon cartridges is not covered bythe warranty. Amount remaining in the cartridge cannot be displayedcorrectly.A toner cartridge may not be installed correctly or may be faulty.● Re-install the toner cartridge. If re-installing the toner cartridge fails to clear the error message, the tonercartridge may be faulty. Contact the store where you purchased the toner cartridge or consult the CanonCustomer Help Center.How to Replace Toner Cartridges(P. 428)The toner cartridge used may not be a genuine Canon product.● Only genuine Canon toner cartridges should be used as replacement toner cartridges.Consumables(P. 472)Cartridge has reached end of lifetime. Rplcmt. recommended.The toner cartridge has reached the end of its lifetime.● Replacement of the toner cartridge is recommended.How to Replace Toner Cartridges(P. 428)Change the authentication password.The password has expired.● Set a new password.Check the authentication settings.The authentication method set on the machine does not match the authentication method set on theRADIUS server.● Check that the same authentication method is set on this machine and the RADIUS server, and set thecorrect authentication method.Configuring IEEE 802.1X Authentication(P. 268)Troubleshooting384
