Solve Network Troubles with The Printer's Diagnostic Functions

It is connected correctly. If, nevertheless, the printer is not found on the network or printing is not possible, check the following items.

Note

• If codes other than "C-0" are displayed at the same time in the item "2-2" see also the correspondence of the other codes.

1. Check 1 Check that security software's firewall is off.

   A message may appear warning you that Canon software is attempting to access the network. If this warning message appears, set the security software to always allow access.

   Quit the security software and make sure that the printer is recognized and ready to use. If so, the cause is the firewall setting. Change the firewall settings so that the printer is recognized and ready to use. For details, contact the manufacturer of the security software.

   If you are using any programs that switch between network environments, check their settings.

2. Check 2 Does network name (SSID) of printer match network name (SSID) setting of wireless router that communicates?

   Check the "3-2-6" item in the printed network settings information and the network name (SSID) of the wireless router you want to connect to. If they are not matched, check the SSID and password of the wireless router you want to connect to, and then setup manually.

3. Check 3 Is privacy separator, SSID separator, or Network separation function enabled on wireless router?

   If it is enabled, disable these functions before performing the setup. To check the settings of the wireless router, refer to the instruction manual provided with it or contact its manufacturer.

4. Check 4 Are MP Drivers (Printer Driver) installed? (Windows)

   If you are using Windows and MP Drivers (Printer Driver) are not installed, install it.

   • Set Up

The printer's Wi-Fi setting is disabled. (You can also check if the Wi-Fi icon does not appear on the printer's screen.)

Enable the Wi-Fi setting in the printer's settings screen.

Wired LAN setting is disabled. (The icon representing the Wired LAN is not displayed on the touch screen.)

Enable the Wired LAN setting from the operation panel.

Wired LAN setting is disabled. Make sure the printer and wireless router are connected via LAN cable.

If the LAN cable is disconnected, connect it correctly.

If your LAN cable is connected to the WAN port of the wireless router, connect it to the LAN port of the wireless router.

No IP address is assigned. (You can also check that the item "3-2-12" in the printed network settings information is blank.)

Check the following items.

1. Check 1 Is printer set to obtain an IP address automatically, or is wireless router requesting manual addressing?

   Refer to the wireless router's manual to enable DHCP (auto-acquisition) settings on the wireless router or to set a valid IP address on the printer.

2. Check 2 When you set printer's IP address manually, correct IP address may not be set.

   Check the network name (SSID) and the password of the wireless router you want to connect to, the IP address applicable range, and then enter the appropriate IP address on the printer side. If you are unsure, set the printer's IP address to automatic (DHCP).

Unable to connect to the specified network. Check the following items.

1. Check 1 Check status of printer and network device (e.g. wireless router) and your computer/smartphone/tablet.

   Communication with a wireless router must be tuned to either the 2.4 GHz or 5 GHz frequency band. The network name (SSID) of the 2.4 GHz frequency band and the network name (SSID) of the 5 GHz frequency band cannot be used in combination. Depending on the wireless router, note that different network name (SSID) is assigned for a bandwidth (2.4 GHz or 5 GHz) or its usage (for PC or game machine), using alphanumeric characters at the end of network name (SSID).

   Check the network name (SSID) set for the printer, and match it with the network name (SSID) of the correct frequency band of the wireless router.

2. Check 2 Password on your wireless router may not match password you entered.

   Passwords are case sensitive.

   Enter the password correctly.

3. Check 3 Monitor signal status and move printer and wireless router as necessary.

   • Place the printer and wireless router where there are no obstacles between them. Wireless communication between different rooms or floors is generally poor.
   • Wireless communication can be impeded by building materials containing metal or concrete. If the printer cannot communicate with the computer over a Wi-Fi due to a wall, place the printer and the computer in the same room.
   • After changing the installation location, print out the network settings information again and check the status of the signal. Compare with the value in section "3-2-1" in the printed network settings information to determine the installation location.

4. Check 4 Check wireless channel number of Wi-Fi you are using on computer.

   Make sure that the wireless channel number on the wireless router is included in the wireless channel number you checked. If the wireless channel number set for the wireless router is not included, change the wireless channel number of the wireless router.

5. Check 5 In case of Wi-Fi connection, check if computer that can be accessed by wireless router is restricted.

   The wireless router settings may be limiting the number of devices that can be connected at the same time. Remove or relax the restrictions.

   To check the settings of the wireless router, refer to the instruction manual provided with it or contact its manufacturer.

   Note

   • To check the MAC address or IP address of your computer, see Checking Computer IP Address or MAC Address.

6. Check 6 If problem occurs only when wireless router is in energy-saving mode, turn off energy-saving mode of wireless router.

   If the problem seems to occur suddenly, it may be resolved by updating the wireless router firmware (e.g. update interval of a key, problems of DHCP update interval, etc.). For details, refer to the wireless router's instruction manual.

7. Check 7 If printer is connected to AirPort Base Station via LAN, make sure you use alphanumeric characters for network name (SSID). (macOS)

   If your network name (SSID) contains characters other than single-byte alphanumeric characters, the connection is not established properly. Change the network (SSID) of the printer to use only single-byte alphanumeric characters.

No default gateway is set.

When you set the IP address of the printer manually, enter a valid default gateway IP address. If you don't know the default gateway, set the IP address to automatic.

There may be a problem with the signal.

Check the following items.

1. Check Monitor signal status and move printer and wireless router as necessary.

   • Place the printer and wireless router where there are no obstacles between them. Wireless communication between different rooms or floors is generally poor.
   • Wireless communication can be impeded by building materials containing metal or concrete. If the printer cannot communicate with the computer over a Wi-Fi due to a wall, place the printer and the computer in the same room.
   • After changing the installation location, print out the network settings information again and check the status of the signal. Compare with the value in section "3-2-1" in the printed network settings information and place the printer in the location with a higher value.

Note

• In some cases, "C-7" and "C-9" are displayed at the same time. In that case, refer to both items.

Too many clients are connected.

Wireless Direct does not allow more than 5 devices to be connected.

If you want to connect additional devices to the printer, unplug any devices that are not in use before adding them.

The noise level is high and does not differ from the signal level due to various devices other than the printer.

• If devices (microwave oven, external hard disk drive, and other USB 3.0 devices) that emit radio waves of the same frequency bandwidth as a wireless router is nearby, it may cause interference. Place the printer and the wireless router as far away from interference sources as possible.
• After you change the location of the printer, check the signal quality. Compare the value of "3-2-2" in the network settings information and place the printer in the location with a higher value.

Note

• In some cases, "C-7" and "C-9" are displayed at the same time. In that case, refer to both items.

No IP address is assigned by the wireless router.

Check the following items.

1. Check 1 Password on your wireless router may not match password you entered.

   Passwords are case sensitive.

   Enter the password correctly.

2. Check 2 Set up printer again and reconnect to Wi-Fi.

3. Check 3 Check DHCP on wireless router. If DHCP is off, set it on.

   For details, refer to the wireless router's instruction manual.

The network name (SSID) remains the default value (The network name (SSID) has not been set). Check the network name (SSID) of the wireless router.

Verify the network name (SSID) and password of the wireless router you want to connect to, and then set it up manually.