❏ If the printer and your computer or smart device are connected to dierent networks, reconnect the
device to the SSID that the printer is connected to.
A privacy separator on the wireless router is available.
Solutions
Most wireless routers have a separator function that blocks communication between devices within the
same SSID. If you cannot communicate between the printer and the computer or smart device even if
they are connected to the same network, disable the separator function on the wireless router. See the
manual provided with the wireless router for details.
The IP address is incorrectly assigned.
Solutions
If the IP address assigned to the printer is 169.254.XXX.XXX, and the subnet mask is 255.255.0.0, the IP
address may not be assigned correctly.
Print the network connection report, and then check the IP address and the subnet mask assigned to the
printer. To print a network connection report, select Settings > Network Settings > Connection Check.
Restart the wireless router or reset the network settings for the printer.
& “Setting a Static IP Address for the Printer” on page 97
The device connected to the USB 3.0 port causes radio frequency interference.
Solutions
When you connect a device to the USB 3.0 port on a Mac, radio frequency interference may occur. Try
the following if you cannot connect to wireless LAN (Wi-Fi) or if operations become unstable.
❏ Place the device that is connected to the USB 3.0 port further away from the computer.
There is a problem with the network settings on the computer or smart device.
Solutions
Try accessing any website from your computer or smart device to make sure that your device's network
settings are correct. If you cannot access any websites, there is a problem on the computer or smart
device.
Check the network connection for the computer or smart device. See the documentation provided with
the computer or smart device for details.
The printer has been connected by Ethernet using devices that support IEEE802.3az (Energy
Ecient
Ethernet).
Solutions
When you connect the printer by Ethernet using devices that support IEEE802.3az (Energy
Ecient
Ethernet), the following problems may occur depending on the hub or router that you are using.
❏ Connection becomes unstable, the printer is connected and disconnected again and again.
❏ Cannot connect to the printer.
❏ e communication speed becomes slow.
Follow the steps below to disable IEEE802.3az for the printer and then connect.
1. Remove the Ethernet cable connected to the computer and the printer.
Solving Problems
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Cannot Print or Scan
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The Printer Cannot Connect to the Network
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