There are two methods available to disable a Wi-Fi Direct (Simple AP) connection; you can disable all connections by using the printer's control panel, or disable each connection from the computer or the smart device. This section explains how to disable all connections.
When Wi-Fi Direct (Simple AP) connection disabled, all computers and smart devices connected to the printer in Wi-Fi Direct (Simple AP) connection are disconnected.
If you want to disconnect a specific device, disconnect from the device instead of the printer. Use one of the following methods to disconnect the Wi-Fi Direct (Simple AP) connection from the device.
Disconnect the Wi-Fi connection to the printer's network name (SSID).
Connect to another network name (SSID).
Tap 
on the home screen.
Tap Wi-Fi Direct.
The Wi-Fi Direct (Simple AP) information is displayed.
Tap Start Setup.
Tap Change Settings.
Tap Disable Wi-Fi Direct.
Check the message, and then tap Disable the settings.
When a completion message is displayed, tap Close.
The screen automatically closes after a specific length of time if you do not tap Close.
Tap Close.