Machine Suddenly Cannot Be Used - Canon MB5400 SERIES Online Manual

Machine Suddenly Cannot Be Used

Cannot Communicate with Printer Following Network Settings Change
Cannot Communicate with Printer via Wireless LAN
Cannot Communicate with Printer Using Direct Connection
Cannot Communicate with Printer via Wired LAN
Cannot Print, Scan, or Fax from a Computer Connected to the Network
Cannot Communicate with Printer Following Network Settings Change
It may take a while for the computer to obtain an IP address, or you may need to restart your computer.
Make sure the computer has obtained a valid IP address, and try again to find the printer.
Cannot Communicate with Printer via Wireless LAN
Make sure the printer is turned on.
Check1
Make sure the printer and wireless router network settings match.
Check2
Make sure the network settings of the printer (e.g. wireless router name, SSID, network key, etc.) are identical
with those of the wireless router.
To check the settings of the wireless router, refer to the instruction manual provided with it or contact its
manufacturer.
To check the current network settings of the printer, print out the network setting information.
Printing Network Settings
If the printer network settings do not match with those of the wireless router, change the network settings of
the printer to match with those of the wireless router.
Network Settings (IJ Network Device Setup Utility) (Windows)
Network Communication (Mac OS)
Make sure the printer is not placed too far away from the wireless router.
Check3
Place the wireless router and printer 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 wireless
LAN 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 a
wireless router is nearby, it may cause interference. Place the wireless router as far away from interference
sources as possible.
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