Brother MFC-8870DW - Manual (Page 146)

Troubleshooting
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14
The LCD displays WLAN Off : The wireless interface is not enabled. See Wireless Enable (Wireless
network only) on page 76.
3
Print the Network Configuration List and check if the settings such as IP address settings are correct for
your network. The problem may be the result of mismatched or duplicate IP address. Verify that the IP
address is correctly loaded into the print server. And make sure that no other nodes on the network have
this IP address. For information on how to print the Network Configuration List, see Printing the Network
Configuration List on page 88.
4
Verify that the print server is on your network as follows:
For Windows ®
Try pinging the print server from the host operating system command prompt with the command:
ping ipaddress
Where ipaddress is the print server IP address (note that in some instances it can take up to two
minutes for the print server to load its IP address after setting the IP address).
For Mac OS ® 9.1 to 9.2 (for the wired network connection only)
(1) From the Apple menu, open the Chooser.
(2) Click the Brother (IP) icon, and make sure that your print server name appears in the right frame. If
it is visible, then the connection is good. Otherwise, go to Step 5.
For Mac OS ® X 10.2.4 or greater
(1) From the Go menu, select Applications.
(2) Open the Utilities folder.
(3) Double-click the Printer Setup Utility icon. (For Mac OS ® X 10.2.x users, double click the Print
Center icon)
(4) Click Add.
(5) Make the following selection. Make sure that your print server appears. If it is visible, then the
connection is good. Otherwise, go to Step 5.