Canon Pixma MG6821 Online Manual

Also see for MG6800 Series: Getting started Online manual Getting started Getting started

Machine Suddenly Cannot Be UsedCannot Communicate with Machine Following Network Settings Change (Windows)Cannot Communicate with Machine via Wireless LANCannot Communicate with Machine Using Direct ConnectionCannot Print or Scan from Network ComputerCannot Communicate with Machine Following Network SettingsChange (Windows)It may take a while for the computer to obtain an IP address, or you may need to restart your computer.Make sure the computer has obtained a valid IP address, and try again to find the machine.Cannot Communicate with Machine via Wireless LANCheck1 Make sure machine is turned on.Check2 Make sure machine and wireless router network settings match.To check the settings of the wireless router, refer to the instruction manual provided with it or contact itsmanufacturer.To check the current network settings of the machine, print out the network setting information.Printing Network SettingsIf the machine network settings do not match with those of the wireless router, change the network settings ofthe machine to match with those of the wireless router using IJ Network Tool.Check3 Make sure machine is not placed too far away from the wireless router.The machine can be up to 50 m (164 ft) from the wireless router indoors. Make sure the machine is closeenough to the wireless router to be used.Check4 Check for obstructions.Wireless communication between different rooms or floors is generally poor. Move the machine and wirelessrouter as necessary.Check5 Make sure there is no source of radio wave interference nearby.If a device like a microwave oven that emits radio waves of the same frequency bandwidth as a wireless routeris nearby, it may cause interference. Place the wireless router as far away from interference sources aspossible.Check6 Make sure computer network settings are correct.848