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 printer, print out the network setting information.Printing Network SettingsIf the printer network settings do not match with those of the wireless router, change the network settings ofthe printer to match with those of the wireless router.Network Settings (IJ Network Device Setup Utility) (Windows)Check5 Make sure the printer is not placed too far away from the wireless router.Place the wireless router and printer where there are no obstacles between them. Wireless communicationbetween different rooms or floors is generally poor. Wireless communication can be impeded by buildingmaterials containing metal or concrete. If the printer cannot communicate with the computer over a wirelessLAN due to a wall, place the printer and the computer in the same room.In addition, if a device like a microwave oven that emits radio waves of the same frequency bandwidth as awireless router is nearby, it may cause interference. Place the wireless router as far away from interferencesources as possible.Note• Though an antenna is attached to most wireless routers, note that some of them have it inside.Check6 Make sure wireless signal is strong. Monitor signal status and move printerand wireless router as necessary. (Windows)Checking Wireless Network StatusCheck7 Make sure you are using a valid channel.Usable wireless channels may be limited depending on wireless network device used by your computer. Seethe instruction manual provided with your computer or wireless network device to check usable wirelesschannels.Check8 Make sure channel set on wireless router is a usable channel as confirmed inCheck 7.If it is not, change the channel set on the wireless router.Check9 Make sure security software's firewall is off.If your security software's firewall is on, a message may appear warning you that Canon software is attemptingto access the network. If this warning message appears, set security software to always allow access.If you are using any programs that switch between network environments, check their settings. Someprograms use a firewall by default.Check10 If printer is connected to an AirPort Base Station via LAN, use alphanumericcharacters for network identifier (SSID). (Mac OS)If the problem is not resolved, redo setup.309
