Lexmark 4800 Series - Manual (Page 108)

4 Verify that XXXX_Series_nnnnnn_P1 is selected, where XXXX is the model series number of your printer and
nnnnnn is the last six numbers of the MAC address of your printer.
Note: The MAC address is located at the back of the printer beside the serial number.
5 If USB is selected instead:
a Select the port name from step 4.
b Click Apply.
c Close the window, and try printing again.
Reinstall software
Uninstall and then reinstall the printer software.
Note: If more than one printer appears in the ”Select your printer” list, pick the printer with the MAC address that
matches the address on the back of your printer.
Wi-Fi indicator is not lit
These are possible solutions. Try one or more of the following:
Check power
Make sure the printer power light is on. For more information, see “Power button is not lit”.
Remove and reinstall the optional internal print server
Note: This solution does not apply to printers that came with the internal wireless print server already installed.
Reinstall the internal wireless print server. For more information, see “Installing an optional internal wireless print
server”.
Wi-Fi indicator light is blinking orange during installation
When the Wi-Fi indicator light is blinking orange, it indicates that the printer has been set up for wireless networking
but cannot connect to the network for which it has been configured. The printer may be unable to join the network
because of interference or its distance from the wireless access point (wireless router), or until its settings are
changed.
These are possible solutions. Try one or more of the following:
Make sure the access point is on
Check the access point and, if necessary, turn it on.
Move your wireless access point (wireless router) to minimize interference
There may be temporary interference from other devices such as microwave ovens or other appliances, cordless
phones, baby monitors, and security system cameras. Make sure your wireless access point (wireless router) is not
positioned too closely to these devices.
Try adjusting external antennas
Generally, antennas work best if they are pointing straight up. You may find, however, that reception improves if you
experiment with different angles for your printer and/or wireless access point (wireless router) antennas.
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