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Welcome to HP Customer Support

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HP Designjet 4020 and 4520 Printer Series - Insert a printhead

  1. If the printhead is new:
    1. Remove the blue protective cap by pulling down on it.
    2. Remove the clear protective tape from the printhead's nozzles by pulling on the paper tab.
      Figure : Removing the protective cap and tape from the printhead
    The printhead is designed to prevent you from accidentally inserting it into the wrong position. Check that the colored label on the printhead matches the colored label of the carriage position into which the printhead is to be inserted.
  2. Insert the new printhead into its correct position in the carriage.
      caution:
    Insert the printhead slowly and vertically, straight down. It may be damaged if you insert it too fast, or at an angle, or if you turn it as you insert it.
    Figure : Inserting the printhead
  3. Push down as indicated by the arrow shown below.
    Figure : Pushing in the printhead
    When installing the new printhead there may be some resistance, so you need to press it down firmly but smoothly.
    If you have difficulty, see I cannot insert a printhead.
  4. Insert any other printheads that need to be installed, and close the carriage cover.
    Figure : Closing the cover
    When all the printheads have been inserted correctly and accepted by the printer, the printer will beep.
      note:
    If the printer does not beep when you insert the printhead and the Replace message appears on the front panel, the printhead may need to be reseated.
  5. Latch the carriage cover.
    Figure : Latching the carriage cover
    When the carriage has been correctly latched, it looks like this:
    Figure : The carriage cover latched
  6. Close the window.
  7. The front panel display confirms that all printheads are correctly inserted.
    Figure : Printheads correctly inserted
  8. Now replace the printhead cleaners for any printheads that have been changed.
      caution:
    Leaving the old printhead cleaner in the printer will shorten the new printhead's life and possibly damage the printer.

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