How can I determine what error is occurring on my HL-B2080Dw?
You can use the Status Monitor on your computer by double-clicking the icon in the task tray to see detailed error information, or check the LED and LCD indicators on the machine itself. The Status Monitor uses color indicators: green for normal stand-by, yellow for a warning, red for an error, and grey for the machine being offline.
From the official Brother HL-B2080DW Monochrome Laser Printer manual, page 9
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