What does it mean when the Alarm and Ready LEDs are blinking at the same time?
When both the Alarm and Ready LEDs are blinking, this indicates a paper jam, no paper in the paper cassette or manual feed slot, or a paper misfeed. Check that the paper is inserted correctly into the paper cassette or manual feed slot, and check if a paper jam has occurred inside the printer. (Pages 14, 15)
From the official Brother HL-1030 Monochrome Laser Printer manual, page 14
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