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The Printer Stopped Working Suddenly

Cannot Communicate with the Printer over the Wireless LAN

Cannot Communicate with the Printer Using the Access Point Mode

Cannot Print from a Computer Connected to the Network

Cannot Communicate with the Printer over the Wireless LAN

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

  2. Check2 Make sure that the network settings in the printer are identical with those of the access point.

    Refer to the instruction manual provided with the access point or contact its manufacturer to check the access point settings, and then modify the printer settings.

    How to Set an Encryption Key

  3. Check3 Make sure that the printer is not placed far away from the access point.

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

  4. Check4 Make sure that there is no obstruction.

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

  5. Check5 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.

  6. Check6 Make sure that the network settings of the computer are correct.

    For the procedures to connect a network device to the computer and set them up, refer to the instruction manual of your network device or contact its manufacturer.

  7. Check7 Make sure that the radio status is good and adjust the installation positions while monitoring the radio status with IJ Network Tool.

    Monitoring Wireless Network Status

  8. Check8 Make sure that a valid wireless channel is used.

    The wireless channel to be used may be limited depending on wireless network devices installed in the computer. Refer to the instruction manual provided with your computer or your wireless network device to specify the valid wireless channel.

  9. Check9 Make sure that the channel confirmed in Check 8 can communicate with the computer.

    If not, change the channel set to the access point.

  10. Check10 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.

  11. Check11 When using a router, connect the printer and computer to the LAN side (same network segment).

  12. Check12 When the printer is connected to an AirPort Base Station via a LAN, use alphanumeric characters for the name of the network (SSID).

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

  • For placement:

    Make sure that there is no barrier or obstacle between the access point and the printer.

Cannot Communicate with the Printer Using the Access Point Mode

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

  2. Check2 Is the access point mode disabled?

    Enable the access point mode following the procedure below.

    1. Make sure that the printer is turned on.

    2. Press and hold the Wi-Fi button, then release the button when the POWER lamp flashes 3 times.

      When the POWER lamp changed from flashing to lit, the access point mode is enabled.

  3. Check3 Is the printer selected to connect external communication devices (e.g. computers, smartphones, or tablets)?

    Select an access point name (SSID) specified for the printer as a destination for external communication devices.

  4. Check4 Enter a password if you specify it for the printer.

  5. Check5 Make sure that external communication devices are not placed far away from the printer.

    Do not locate external communication devices too far away from the printer.

  6. Check6 Make sure that there is no obstruction.

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

  7. Check7 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.

  8. Check8 Are you trying to connect 6 devices or more?

    You can connect up to 5 devices using the access point mode.

Cannot Print from a Computer Connected to the Network

  1. Check1 Make sure that the network settings of the computer are correct.

    For the procedures to set up the computer, refer to the instruction manual of your computer or contact its manufacturer.

  2. Check2 If the printer driver is not installed, install it.

    Install the printer driver from our website.

  3. Check3 Make sure that access control is not set to the access point.

    For the procedures to connect an access point and set it up, refer to the instruction manual of your access point or contact its manufacturer.

    Note