What does the wireless light indicator mean on the control panel?
A solid blue light indicates that wireless connection has been established and you can print. A slow blinking light indicates that wireless is on, but the printer is not connected to a network—make sure your printer is within range of the wireless signal. A fast blinking light indicates a wireless error and you should refer to the message on the printer display.
From the official HP Officejet 3830 All-in-One Printer manual, page 1
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