You can print a network connection report to check the status between the printer and the wireless router.
Load papers.
Select Settings on the home screen.
To select an item, use the 
buttons, and then press the OK button.
Select Network Settings > Connection Check.
The connection check starts.
Follow the instructions on the printer's screen to print the network connection report.
If an error has occurred, check the network connection report, and then follow the printed solutions.