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[Wi-Fi]
Monitor signal status and move printer and wireless router as
Check
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.
C-8
[Wi-Fi]
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.
C-9
[Wi-Fi]
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.
C-10
[Wi-Fi]
No IP address is assigned by the wireless router.
Check the following items.
[Wi-Fi]
Password on your wireless router may not match password you
Check1
entered.
Passwords are case sensitive.
Enter the password correctly.
[Wi-Fi]
Set up printer again and reconnect to Wi-Fi.
Check2
[Wi-Fi]
Check DHCP on wireless router. If DHCP is off, set it on.
Check3
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