When you turn the printer ON and hold down the power button too long, the wireless LAN switches from ON to OFF and vice versa. (If you want to turn the printer OFF, simply press the power button twice quickly.) To avoid accidentally changing the wireless LAN setting by holding down the power button, you can make the printer always enable wireless LAN during power up by using the Brother PJ-673 Utility.

Please follow the steps below:

1. Click the “WLAN Settings” button to open the WLAN Settings dialog box.
   
   
   
    
2. Select “Wireless LAN by Default” and click “Send Settings”.