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HP Smart Tank 450 Printers - An 'Incompatible' or 'Ink Cartridges Missing' Error Message Displays

This document is for HP Smart Tank Wireless 450, 455, and 457 printers.
After you install the printheads, the printer did not prime and an Incompatible or Ink Cartridges Missing error message displays on the computer screen. On the printer control panel, one or both of the Printhead icons , the Error icon , and the Printhead Alert light blink.

Step 1: Remove, inspect, and then reseat the printheads

The printer might display an error if the printheads are not correctly installed. Perform the following steps for the printhead(s) indicated by the Printhead icons on the printer control panel.
  1. Close the output tray extender, and then rotate the output tray left to stow it in the printer.
  2. Open the exterior door, and then open the printhead access door.
  3. If the carriage is not visible, press and hold the Black Color Copy button for 3 seconds.
    The carriage moves to the center of the printer.
    Access the print carriage
  4. Gently push down on the blue carriage latch.
    The blue carriage latch opens.
    Open the printhead carriage latch
  5. Lightly press down on the printhead to release it, and then pull the printhead out of its slot.
    Removing the printheads
  6. Make sure the plugs on top of the printhead have been removed.
    Pull the orange plugs
  7. Make sure the tape from the printhead contacts has been removed.
      caution:
    Do not touch the copper-colored contacts or the ink nozzles. Do not replace the protective tape on the contacts. Handling these parts can result in clogs, ink failure, and bad electrical connections.
    Remove the tape
  8. Slide the printhead at a slight upward angle into the empty slot, and then gently push up on the printhead until it snaps into place.
    Insert the printheads
    • Insert the tri-color printhead into the left slot.
    • Insert the black printhead into the right slot.
  9. Close the blue carriage latch by pushing down firmly until the latch snaps into place.
    Image: Close the latch
  10. Close the printhead access door.
  11. Close the exterior door.
    The priming process should continue.
If the error persists and the printer did not prime, continue to the next step.

Step 2: Reset the printer

Resetting the printer can sometimes resolve a printhead error.
  1. Turn the printer on, if it is not already on.
  2. Wait until the printer is idle and silent before you continue.
  3. With the printer turned on, disconnect the power cord from the rear of the printer.
  4. Unplug the power cord from the wall outlet.
  5. Wait at least 60 seconds.
  6. Plug the power cord back into the wall outlet.
    note:
    HP recommends connecting the printer power cord directly to the wall outlet.
  7. Reconnect the power cord to the rear of the printer.
  8. Turn on the printer, if it does not automatically turn on.
  9. Wait until the printer is idle and silent before you proceed.
If the error persists, continue to the next step.

Step 3: Service the printer

If the previous steps did not resolve the printhead error, or the printheads have already been primed, 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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