Replacing the Printhead Assembly
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.
- Go to the HP Parts Store website (in English).
- Under Find your part(s) , type CN642A in the Search by part number text box.
- 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
- Make sure that the product is turned on.
- Lift the cartridge access door to open it, and then wait until the carriage stops moving.
- Press the tab on the cartridge to release it, and then remove it from the slot.
- Repeat step three for each cartridge.
Step two: Remove the old printhead
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.
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.
Step four: Install 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.
- Hold the printhead upright with the colored shape icons on the top.
- Lower the printhead into the carriage.
- Carefully lower the latch handle.Figure 11: Lower the latch handle
Step five: Install the new cartridges
NOTE:Do not reuse the old cartridges. They might damage the new printhead.
- Remove the new cartridge from its package by pulling the orange pull-tab straight back to remove the plastic wrap from the cartridge.
- Twist the orange cap to snap it off.NOTE:A forceful twist might be required to remove the orange cap.
- 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.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.
- Repeat steps one through three for each cartridge to be replaced.
- Close the cartridge access door.
- 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.
- Lift the output tray.
- Slide the paper-width guide to its outermost position.
- 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.
- 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.
- Lower the output tray.
- Pull the output tray out, and then unfold the paper catch at the end of the tray extender.
- 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.
- Put the old printhead into the plastic package that the new printhead arrived in.
- Peel off the lid sticker labeled B and use it to seal the printhead package.
- Use the orange caps from the new cartridges to cap the old cartridges.
- 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.
- Close the box, apply the post-paid mailing label, and then put the box in the mail.