Replacing toner cartridges and imaging drums are standard procedures when it comes to maintaining a laser printer. Most models from varying manufacturers have similar configurations; however, the internal setup of the HP LaserJet 2840 is slightly different, as the cartridges and drum can only be accessed by lifting the scanner (as shown in image, release button is circled).
Replacing the Cartridge
Rather than offering standard slots, the cartridges are held on a carousel and users must use the button on the control panel to rotate to the color that is being replaced.
- Rotate carousel until the color you wish to replace is selected.
- Open the top of the unit by pulling the white release lever on the top panel.
- The cartridge will be revealed and you simply pinch the two blue buttons to remove and install cartridges.
Replacing the Drum
It is not as easy to determine when the drum needs to be replaced, but a message will appear on the LCD display of the 2840 when the time comes. Unfortunately, finding the drum has proved to be a bit challenging for users.
Where art thou, drum?
- Pull that same white release lever (used to replace cartridges) to open the top panel. You should be able to locate the drum by spotting the handle.
- Rotate the drum so the handle is facing the top of the unit.
- Pull the handle and lift the drum out of the printer.
- Remove any packing materials, including shipping screws and orange protective plate from the new drum.
- Use alignment arrows to insert properly.
Once you have changed the cartridges and drum for the HP 2840 one time, the process should be quick and painless. It is just that first replacement that seems to stump many people.
Want to rotate the carousel without having to have the top cover closed or even having the machine turned on?
Check out this video for a nice trick of the trade: