Is the wireless router/access point connectable?
Use your computer or other devices to confirm whether it can be connected wirelessly.
Is the printer far from the access point, or is there an obstacle between them?
Move the printer close to the access point, or remove the obstacle.
Are access restrictions set on the access point?
If access restrictions are set on the access point (wireless router, etc.), register the printer’s MAC address or IP address on the access point to allow communication. For details, see the access point user’s guide.
Is the SSID (network name) hidden according to the access point settings?
If the access point stealth function, etc. is turned on to hide the SSID, enter the SSID on the control panel. See Setting up Printer LAN Using the Control Panel.
Is the WEP key or WPA passphrase correct?
WEP keys and WPA passphrases are case-sensitive. Verify that the entered WEP key or WPA passphrase is correct.
Are usable wireless channels restricted on the WLAN-equipped computer?
Usable wireless channels may be restricted on a wireless-equipped computer. See the computer’s or wireless card’s user’s guide to confirm usable wireless channels. Verify that wireless channels confirmed above include channels set to the access point. If not, change the access point wireless channels.
Is the network adapter compatible with this printer’s standards?
There are different standards such as 802.11/a, 802.11/b, and 802.11/g for wireless LAN devices, and electromagnetic waves of different frequencies are also used.
Does the SSID (network name) contain Non-ASCII characters?
Check if the SSID (network name) contains Non-ASCII characters. The printer cannot display Non-ASCII characters.
Is the message "The combination of IP address and subnet mask is invalid." displayed?
Solution 1: If your broadband router (or access point) uses a DHCP function, set the printer’s IP address setting to Auto. See Making General Network Settings.
Solution 2: If you want to use Manual to set the printer’s IP address, see the following to set the IP address and subnet mask.
1. Check the IP address for the broadband router (or access point) connected to your computer. See the broadband router’s (or access point’s) user’s guide.
2. All IP addresses are written in segments of four numerical values. In the final segment, set a unique numerical value for your printer within a range of 1 to 254. (When the router is a DHCP server or when there is another DHCP server in the LAN, set a value that does not conflict with the ID address range allocated by the DHCP server.)
IP address for the broadband router: 192.168.1.1
Example setting on the printer: 192.168.1.3
For the subnet mask, 255.255.255.0 is normally set for small-scale networks and all devices in the LAN use this value. Also, when a gateway value is set, use the same value as the IP address for the wireless router.
Is Wireless LAN Setup set to Disable on the control panel?
If set to Enable, communication cannot be established on a wired LAN. Set it to Disable.
Does the printer’s communication mode (Link Speed) correspond to the hub or router?
Confirm whether the printer’s communication mode is appropriate for the hub or router.