Canon PIXMA MX492 MX490 User Manual - Page 582
The Machine Cannot Be Detected in the Wireless LAN
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The Machine Cannot Be Detected in the Wireless LAN Check1 Make sure that the machine is turned on. Check2 Is Change LAN in LAN settings under Device settings set to LAN inactive? Check3 When the machine is connected to the computer temporarily using a USB cable, make sure that the USB cable is connected properly. When you set up the wireless LAN connection or change the wireless LAN settings using IJ Network Tool through USB connection, make sure that the machine is connected to the computer with a USB cable securely. Connecting the Machine to the Computer Using a USB Cable Check4 Make sure that the machine setup is completed. If not, perform setup according to the instructions on our website. Check5 When using IJ Network Tool, click Update to search for the machine again. Canon IJ Network Tool Screen Check6 Make sure that the network settings in the machine are identical with those of the wireless router. Refer to the instruction manual provided with the wireless router or contact its manufacturer to check the wireless router settings, and then modify the machine settings. How to Set an Encryption Key Check7 Make sure that there is no obstruction. Wireless communication between different rooms or floors is generally poor. Adjust the location of the devices. Check8 Make sure that the machine is not placed far away from the wireless router. The wireless router is located indoors within the effective range for wireless communication. Locate the machine within 164 ft. / 50 m from the wireless router. Check9 Make sure that there is no source of radio wave interference in your vicinity. If a device (e.g. microwave oven) using the same frequency bandwidth as the wireless station is placed nearby, the device may cause interference. Place the wireless station as far away from the interference source as possible. Check10 Make sure that the network settings of the computer are correct. Make sure that the computer can communicate with the wireless router over the wireless LAN. Check11 Make sure that the firewall of the security software is disabled. 582