Make sure you purchase the right ink cartridges for your specific printer and printer region or have your old ones refilled. Cartridges are not compatible between different brands, and often not within the same brand. HP often designs its inkjet hardware to use country-specific consumables. When you unbox a new HP inkjet printer and set it up, you install a set of ink tanks that ship with the printer. As you turn on the device and get ready to use it, an initialization sequence localizes it to the country associated with the ink cartridges you installed. HP recommends that you use original HP ink cartridges.
You can check the estimated ink levels from the printer control panel, from the HP printer software, and from the HP Smart App.
To check the ink levels from the printer software (Windows):
– Open the HP printer software.
– In the printer software, click Estimated Levels.
To check the ink levels from the printer control panel:
The ink level icons on the printer display show an estimate of ink remaining in the cartridges. The left ink icon shows the estimated ink level of the tri-color cartridge, and the right icon shows the estimated ink level of the black cartridge.
To check the ink levels from the HP Smart App:
Open the HP Smart App on your mobile device. The estimated ink levels for your printer appear at the top of the screen, beside the picture of the printer.
XL (Extra Large) cartridges cost more but do provide better value in the long run. They will be able to print almost 2 times as many pages as a regular cartridge. Our advice is that if you print often, go with XL. However, ink can dry up. So if you are not a frequent printer, go with the regular cartridges.
Ink level warnings and indicators provide estimates for planning purposes only. When you receive a low-ink warning message, consider having a replacement cartridge available to avoid possible printing delays. You do not have to replace the cartridges until the print quality is unacceptable.
Use the single-cartridge mode to operate the HP All-in-One with only one print cartridge. The single-cartridge mode is initiated when a print cartridge is removed from the print cartridge carriage.
For your US HP DeskJet 2742 All-in-One Printer you need HP 67 Black AND HP 67 Tri-color cartridges OR the XL versions: HP 67XL Black AND HP 67XL Tri-color cartridges.
For your European or UK HP DeskJet 2742 All-in-One Printer you need HP 305 Black AND HP 305 Tri-color cartridges OR the XL versions: HP 305XL Black AND HP 305XL Tri-color cartridges.
Try Amazon's ink selector tool to find compatible ink cartridges for your printer.
Replace the ink cartridges
3. Lower the output tray, reach inside the printer, grasp the handle, and then lower the ink cartridge access door. The carriage moves to the center of the printer. Wait until the printer is idle and silent before continuing.
7. Hold the cartridge by its sides with the nozzles toward the printer, and then insert the cartridge into its slot at a slight upward angle. Make sure that the icon on the cartridge matches the icon on the slot. The tri-color cartridge goes in the slot on the left, and the black cartridge goes in the slot on the right.
Align the cartridges
11. To achieve the best print quality, it is always useful to align the ink cartridges. You can print the alignment page from the HP Smart app or from the printer software.
A. To print the alignment page from the printer software:
– Open the printer software.
– In the printer software, click Print & Scan.
– Click Maintain Your Printer to access the printer toolbox.
– Click Align Cartridges on the Device Services tab.
– Follow the onscreen instructions to align the cartridges.
– Recycle or discard the cartridge alignment sheet later.