Lexmark MX421 User Manual page 225

Troubleshooting
Action
Step 6
Check if the web proxy servers are disabled.
Are the web proxy servers disabled?
Step 7
Access the Embedded Web Server.
Did the Embedded Web Server open?
Cannot connect the printer to the Wi‑Fi network
Action
Step 1
Make sure that Active Adapter is set to Auto.
From the home screen, touch Settings > Network/Ports > Network
Overview > Active Adapter > Auto.
Can the printer connect to the Wi‑Fi network?
Step 2
Check if the correct Wi‑Fi network is selected.
Note: Some routers may share the default SSID.
Are you connecting to the correct Wi‑Fi network?
Step 3
Connect to the correct Wi‑Fi network. For more information, see
"Connecting the printer to a Wi‑Fi network" on page
Can the printer connect to the Wi‑Fi network?
Step 4
Check the wireless security mode.
From the home screen, touch Settings > Network/Ports > Wireless
> Wireless Security Mode.
Is the correct wireless security mode selected?
Step 5
Select the correct wireless security mode.
Can the printer connect to the Wi‑Fi network?
Yes
Go to step 7.
The problem is
solved.
Yes
The problem is
solved.
Go to step 4.
The problem is
solved.
156.
Go to step 6.
The problem is
solved.
225
No
Contact your
administrator.
Contact customer
support.
No
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.