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HP Customer Support - Knowledge Base

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HP LaserJet Pro MFP M28-M30a Printers - Blinking Lights

This document is for HP LaserJet Pro MFP M28a, M29a, M30a printers.
The following sections describe error conditions with blinking (flashing) lights displayed on the printer control panel, followed by solutions for each error. Find the blinking light pattern that displays on the control panel, and then follow the steps to resolve the issue.
     Example of the control panel buttons, icons, and lights
  1. ID Copy button
  2. Start Copy button
  3. Supply light
  4. Power button and light
  5. Attention light
  6. Cancel button

Attention and Supply lights blink, and the Ready light is on

There is an issue with the toner cartridge.
The Attention and Supplies lights are blinking

Service the printer

Service or replace your HP product if you completed all preceding steps.
To see if your product is still under warranty, go to the warranty check website http://www.support.hp.com/checkwarranty. Contact HP Support to schedule a repair or replacement. If you are in Asia Pacific, Contact HP Support to find a local service center in your area.
Repair fees might apply for out-of-warranty products.

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