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Replacing the Printhead Assembly

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Introduction

A printhead assembly is formed by cartridges fitted into printheads. A new printhead assembly needs to be installed when the existing printhead assembly is damaged or is incompatible with the product. Replacement printhead assemblies are only available from HP Support or authorized service providers.
These steps apply to the United States only.
If HP replaces your printhead assembly under warranty, you receive a new printhead assembly, cleaning materials, and a full set of new cartridges.
If your printhead assembly is no longer under warranty, you can purchase a new one online.
  1. Go to the HP Parts Store website (in English).
  2. Under Find your part(s) , type CN642A in the Search by part number text box.
  3. Follow the on-screen instructions to order the printhead assembly.

Replace the printhead assembly

Follow these steps to replace the printhead assembly.
NOTE:Wait until a new printhead assembly is available before removing the cartridges. Do not leave the cartridges outside the product longer than 30 minutes. Doing so can result in damage to the product and the cartridges.

Step one: Remove the old cartridges

  1. Make sure that the product is turned on.
  2. Lift the cartridge access door to open it, and then wait until the carriage stops moving.
    Figure 1: Open the cartridge access door
    Open the cartridge access door
  3. Press the tab on the cartridge to release it, and then remove it from the slot.
    Figure 2: Remove the cartridges
    Remove the cartridges from the printhead
  4. Repeat step three for each cartridge.

Step two: Remove the old printhead

  1. Lift the latch handle on the carriage until it stops.
    Figure 3: Lift the latch handle
    Lift the latch handle
  2. Lift the printhead to remove it from the carriage.
    Figure 4: Remove the printhead
    Lift the printhead to remove it from the carriage

Step three: Clean the electrical contacts inside the product

For successful printhead assembly replacement, it is important to get the electrical contacts inside the product as clean as possible.
Pre-moistened wipes, labeled with a yellow sticker, are included with the new printhead assembly. Use these wipes to clean the electrical contacts inside the product.
Figure 5: Pre-moistened wipes
Pre-moistened wipes
Remove a pre-moistened wipe from its package. Use it to wipe from the top to the bottom of the electrical contacts, in one direction only. As the wipe becomes dirty, discard it and use a new one.
Figure 6: Wipe the contacts in the product
Wipe the electrical contacts in the product

Step four: Install the new printhead

  1. Remove the new printhead from its package.
    Figure 7: Remove the new printhead
    Remove the new printhead from its package
    CAUTION:Do not touch the copper-colored electrical contacts. Do not scratch the electrical contacts on the product or any other surface.
    Figure 8: Do not touch the electrical contacts
  2. Hold the printhead upright with the colored shape icons on the top.
    Figure 9: Hold the printhead upright
    Hold the printhead upright
  3. Lower the printhead into the carriage.
    Figure 10: Install the new printhead
    Lower the printhead into the carriage
  4. Carefully lower the latch handle.
    Figure 11: Lower the latch handle
    Lower the latch handle

Step five: Install the new cartridges

NOTE:Do not reuse the old cartridges. They might damage the new printhead.
  1. Remove the new cartridge from its package by pulling the orange pull-tab straight back to remove the plastic wrap from the cartridge.
    Figure 12: Remove the plastic wrap
    Remove the plastic wrap
  2. Twist the orange cap to snap it off.
    NOTE:A forceful twist might be required to remove the orange cap.
    Figure 13: Remove the orange cap
    Remove the orange cap
  3. Using the colored shape icons for help, slide the cartridge into the empty slot until it clicks into place and is seated firmly in the slot.
    Figure 14: Insert the new cartridge
    Insert the new cartridge
    CAUTION:Do not lift the latch handle on the carriage to install the cartridges. Doing so can result in incorrectly seated cartridges and printing issues. The latch must remain down in order to correctly install the cartridges.
    Make sure that you insert the cartridge into the slot that has the same shape icon and color as the cartridge that is being installed.
  4. Repeat steps one through three for each cartridge to be replaced.
  5. Close the cartridge access door.
    Figure 15: Close the cartridge access door
    Close the cartridge access door
  6. Look at the control panel display and follow any instructions that appear on the display.

Step six: Load paper

The product must print an alignment page after the printhead is replaced. Follow these steps to load paper into the product.
  1. Lift the output tray.
    Figure 16: Lift the output tray
    Lift the output tray
  2. Slide the paper-width guide to its outermost position.
    Figure 17: Adjust the paper-width guide
    Slide the paper-width
guide to its outermost position
  3. Insert a stack of plain paper into the main input tray with the short edge forward and the print side down. Slide the stack of paper forward until it stops.
    Figure 18: Load paper
    Load paper
  4. Slide the paper-width guide inward until it stops at the edge of the paper.
    NOTE:Do not overload the main input tray. Make sure that the stack of paper fits within the main input tray and that it is no higher than the top of the paper-width guide.
  5. Lower the output tray.
    Figure 19: Lower the output tray
    Lower the output tray
  6. Pull the output tray out, and then unfold the paper catch at the end of the tray extender.
    Figure 20: Extend the paper catch
    Extend the paper catch
  7. The product prints an alignment page.

Step seven: Return failed parts to HP

If the new printhead assembly came with a post-paid mailing label and instructions to return the failed parts to HP, please do so. HP would like to analyze the parts in order to improve its products in the future.
If a post-paid return mailing label is not included with the new printhead assembly, you are done, and there is no need to continue troubleshooting.
  1. Put the old printhead into the plastic package that the new printhead arrived in.
    Figure 21: Put the old printhead into the package
    Put the old printhead into the package
  2. Peel off the lid sticker labeled B and use it to seal the printhead package.
    Figure 22: Peel off the lid sticker
    Peel off the lid sticker
    Figure 23: Seal the package with the lid sticker
    Seal the package with the lid sticker
  3. Use the orange caps from the new cartridges to cap the old cartridges.
    Figure 24: Cap the old cartridges
    Use the orange caps from the new  cartridges to cap the old cartridges
  4. Put the old parts and the form that came with the new parts into the box that the new parts came in. If possible, also include a sample printout that shows the issue with the old printhead.
    Figure 25: Put the old parts, form, and sample printout into the box
    Put the old parts, form, and sample printout into the box
  5. Close the box, apply the post-paid mailing label, and then put the box in the mail.
    Figure 26: Send the box back to HP
    Send the box back to HP