hp-support-head-portlet

Actions
Loading...

Welcome to HP Customer Support

hp-contact-secondary-navigation-portlet

Actions
Loading...

hp-share-print-widget-portlet

Actions
Loading...
  • Information
    Information regarding recent vulnerabilities

    HP is aware of the recent vulnerabilities commonly referred to as "Spectre" and "Meltdown". HP has published a security bulletin with patches for these issues and a list of impacted systems. We will continue to update the bulletin as more information becomes available and encourage customers to check the bulletin frequently.

hp-concentra-wrapper-portlet

Actions
Loading...

HP Compaq nc4400 Notebook PC - Removing and Replacing the Keyboard

Introduction
This document is provided to assist in removing and replacing the keyboard for the HP Compaq nc4400 Notebook PC.
Minimum skill level
The End-User should possess product-specific knowledge and technical skill on how to service the system, and have familiarity with the operating system.
Tools required
Torx 8 (T8) screwdriver.
Small, flat-bladed screwdriver or a flat-bladed alignment tool.
Parts required
  note:
Part numbers are subject to change.
The replacement part number will vary depending on the Keyboard that is being replaced. If a part is listed as "Yes" under "Requires Return" then the defective part needs to be returned to HP. Click here for more information on returning parts to HP.
Description
Spare Part Number
Requires Return
Keyboard assembly
419171-xx1 (Modified)
No
The part number will vary based on the country. Click here for a list of country specific spare part numbers.
  note:
For customers in countries/regions with RoHS legislation* (e.g. EU, China, etc.) restricting the use of hazardous substances in electrical equipment. The use of the Original Spare part is regulated by RoHS legislation. If your unit contains a part that is labeled with the Modified Spare number, the Modified Spare must be ordered as the replacement part. If your unit contains a part that is labeled with the Original Spare number, please order the Original Spare as the replacement part. In this case either the Original Spare or the Modified Spare may be shipped which will not affect performance or functionality of the unit.
Summary of instructions
To view a video demonstrating the procedure for removing the Keyboard, click on the link below. Or use the product video listing on the HP Services Media Library (Click here to go to HP Service Media Library), then select Keyboard from the menu on the upper left hand side of the screen.
Click here to view the Keyboard removal video (right-click on the link to open in a new window/tab).
Keyboard removal
  1. Review the safety considerations before performing the steps listed below by clicking on the following link:
      caution:
    Failure to comply with the precautions could result in damage to your product or loss of data.
  2. Remove the T8-11 mm screw near the edge of the base enclosure.
  3. Remove the T8-11 mm screw near the center of the base enclosure.
  4. Remove the T8-11 mm screw near the docking station connector.
  5. Remove the T8-5 mm screw inside the docking station guide hole.
  6. Turn the notebook right side up and open the display panel fully.
  7. Use a flat-bladed tool or your finger to lift the top edge of the keyboard and then slide the keyboard toward the rear of the notebook.
  8. Using minimal force, lift the locking bar to unlock the pointing stick ZIF connector on the system board.
      note:
    Use care to prevent damaging the ZIF connector and ribbon cable.
  9. Remove the pointing stick ribbon cable from the ZIF connector.
  10. Slide the keyboard toward the front of the notebook and place it on the palm rest.
  11. Using minimal force, lift the locking bar to unlock the keyboard ZIF connector on the system board.
      note:
    Use care to prevent damaging the ZIF connector and ribbon cable.
  12. Remove the keyboard ribbon cable from the ZIF connector and remove the keyboard.
Keyboard replacement
  1. Place the keyboard right side up on the palm rest.
  2. Insert the keyboard ribbon cable into the keyboard ZIF connector on the system board.
      note:
    Use care to prevent damaging the keyboard ribbon cable.
  3. Push the locking bar down to lock the keyboard ZIF connector on the system board.
  4. Slide the keyboard toward the rear of the notebook.
  5. Insert the pointing stick ribbon cable into the pointing stick ZIF connector on the system board.
      note:
    Use care to prevent damaging the keyboard ribbon cable.
  6. Push the locking bar down to lock the pointing stick ZIF connector on the system board.
  7. Toe the tabs on the bottom edge of the keyboard into the top cover and press the keyboard flat.
  8. Close the display panel and turn the notebook upside down.
  9. Replace the T8-11 mm screw near the docking station connector.
  10. Replace the T8-11 mm screw near the center of the base enclosure.
  11. Replace the T8-11 mm screw near the edge of the base enclosure.
  12. Replace the T8-5 mm screw inside the docking station guide hole.

hp-feedback-input-portlet

Actions
Loading...

hp-online-communities-portlet

Actions
Loading...

Ask the community!


Support Forum

Support Forum

Join the conversation! Find Solutions, ask questions, and share advice with other HP product owners. Visit now


hp-feedback-banner-portlet

Actions
Loading...

hp-country-locator-portlet

Actions
Loading...
Country/Region: Flag Canada

hp-detect-load-my-device-portlet

Actions
Loading...