What does it mean when the HP ePrint light keeps blinking continuously?
A continuously blinking HP ePrint light means the HP ePrint feature is turned on but the printer is not connected to the Web Services server. Press the HP ePrint button and the Information button at the same time to print a diagnostic page, then follow the instructions on that page to resolve the issue. (Page 10-11)
From the official HP Deskjet GT 5820 All-in-One Printer manual, page 10
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