What does it mean when the WiFi light is blinking on my DCP-B7520DW?
When the WiFi light blinks, the wireless connection is down or your machine is in the process of connecting to a wireless access point. When the WiFi light is on (solid), your Brother machine is connected to a wireless access point. (Page 9)
From the official Brother DCP Series B7520DW All-in-One Printer manual, page 9
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