The Printer Cannot Be Detected in the Wireless LAN

1. Check1 Make sure that the printer is turned on.

2. Check2 Make sure that the Wi-Fi lamp is lit on the printer.

   If the Wi-Fi lamp is off, the wireless LAN is disabled.

   To enable wireless LAN, press and hold the RESUME/CANCEL button, then release the button when the POWER lamp flashes 10 times.

   Wireless LAN is enabled and the Wi-Fi lamp is lit.

3. Check3 When the printer 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 printer is connected to the computer with a USB cable securely.

   Connecting the Printer to the Computer Using a USB Cable

4. Check4 Make sure that the printer setup is completed.

   If not, perform setup according to the instructions on our website.

5. Check5 When using IJ Network Tool, click Update to search for the printer again.

   Canon IJ Network Tool Screen

6. Check6 Make sure that the network settings in the printer 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 printer settings.

   How to Set an Encryption Key

7. Check7 Make sure that there is no obstruction.

   Wireless communication between different rooms or floors is generally poor. Adjust the location of the devices.

8. Check8 Make sure that the printer is not placed far away from the wireless router.

   The wireless router is located indoors within the effective range for wireless communication. Locate the printer within 164 ft. / 50 m from the wireless router.

9. 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.

10. 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.

11. Check11 Make sure that the firewall of the security software is disabled.

    If the firewall function of your security software is turned on, a message may appear warning that Canon software is attempting to access the network. If the warning message appears, set the security software to always allow access.

    If using any programs that switch the network environment, check their settings. Some programs will enable a firewall by default.

12. Check12 When using a router, connect the printer and computer to the LAN side (same network segment).

13. Check13 When the printer is connected to an AirPort Base Station via a LAN, use alphanumeric characters for the name of the network (SSID).

14. Check14 Confirm the TCP/IP setting of the printer and disable IPv6.

    To check the current TCP/IP setting, print out the network setting information.

    Printing Out Network Setting Information

    When "TCP/IP Version" is set to "IPv4 & IPv6", both IPv4 and IPv6 are enabled.

    Press and hold the RESUME/CANCEL button, then release the button when the POWER lamp flashes 17 times.

    IPv6 is disabled and only IPv4 is enabled.

If the problem is not resolved, perform setup again according to the instructions on our website.