Is Paper Jammed?If so, remove any jammed paper. Paper Jams(P. 485)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. 475)Replacing the Toner Cartridge(P. 469)Cannot receive the fax. Make sure the fax was sent correctly by the sender.Operations were not performed within the fixed time when receiving a fax manually, and the machine timed out.When You Hear a Beep During Fax Reception, Press [Start Receiving] Within 35 Seconds.[Home] screen on the operation panel [Fax] [Start Receiving]Cannot send because more than one destination is specified.Sending of faxes to multiple destinations is restricted.To Cancel Restriction, Change the [Restrict Sequential Broadcast] Setting.Log in to Remote UI in System Manager Mode [Settings/Registration] [TX Settings] [Fax TX Settings][Edit] in [Restrict Sequential Broadcast], select [Off] [OK]On the operation panel, select [Menu] in the [Home] screen, and then select [Function Settings] to changethe setting. [Restrict Sequential Broadcast](P. 437)Cannot specify a group.If you press [Hook] when sending a fax, you cannot specify a group destination.Specify the destination without pressing [Hook].You cannot specify multiple destinations or group destinations when the handset is off the hook.Return the handset,and then specify the destination.Cart. Comm. Error Cannot print. A non-Canon or counterfeit cartridge maybe in use. Close: Press OKPrinting cannot be performed due to incorrect installation of the toner cartridge, a damaged toner cartridge, or theuse 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. 469)● For optimum print quality, using Canon genuine toner cartridges is recommended. List ofConsumables(P. 476)● If the message still appears after repeatedly reinstalling the toner cartridge, contact your dealer or servicerepresentative. If the Problem Persists(P. 579)Cartridge Comm. Error Problems caused by non-Canon cart. not covered bywarranty. Close: Press OKPrinting cannot be performed due to incorrect installation of the toner cartridge, a damaged toner cartridge, or theuse of a non-Canon toner cartridge, resulting in a communication error.Troubleshooting561