How to Safely Replace Toner in HP LaserJet MFP M140w

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Are you wondering whether you need to turn off and unplug your HP LaserJet MFP M140w printer when replacing the toner cartridge? Great question! Here’s a simple guide to help you with the process, ensuring you can quickly and easily replace that toner without any hassle.

First and foremost, the answer is no. You do not need to turn off or unplug your printer before replacing the toner cartridge. This makes the process a lot easier and quicker.

Let’s walk through the steps for installing a new cartridge in your HP LaserJet MFP M139-M142 printer:

1. Gather Your Supplies: Make sure you have the new toner cartridge ready. If you’re unsure which one to purchase, you can check the compatible cartridges for your printer model at this link: Compatible Cartridge Information. For the HP LaserJet MFP M139 – M142 printers, the 142A Black cartridge is the one you’ll need.

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2. Access the Cartridge Compartment: Open the front access door of the printer. This will give you access to the toner cartridge compartment.

3. Remove the Old Cartridge: If there’s an old cartridge already in the printer, gently pull it out. Be sure to do this carefully to avoid any spills or leaks of toner.

4. Prepare the New Cartridge: Before installing the new cartridge, shake it gently to distribute the toner evenly inside. This helps ensure you get quality prints right from the start.

5. Insert the New Cartridge: Align the new cartridge with the compartment and slide it firmly into place until you hear a click. This means it’s secured properly.

6. Close the Access Door: Once the new cartridge is in, close the front access door of the printer.

7. Check Your Printer: Turn on the printer (if it was off) and run a test print to ensure everything is functioning correctly with the new toner cartridge.

By following these easy steps, you can successfully replace the toner cartridge in your HP printer without needing to power off or unplug it. If you found this guide helpful, feel free to share your thoughts or give a thumbs up!

And remember, if this information solved your question, be sure to mark it as an "Accepted Solution" for future reference. Happy printing!

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