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HP ProBook 4535s Notebook PC - Removing and Replacing the Keyboard

Introduction
This document is provided to assist in removing and replacing the keyboard for the HP ProBook 4535s Notebook PC.
Minimum skill level
The end user requires no hardware-specific training to replace the defective part. The end user should have familiarity with system hardware and software requiring repair.
Tools required
Small, Phillips-head (P1) screwdriver.
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
Part Number
Requires Return
Keyboard assembly (Silver color) - Full-sized keyboard with numeric keypad
646300-xx1 (Modified)
Yes
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 labelled with the Modified Spare number, the Modified Spare must be ordered as the replacement part. If your unit contains a part that is labelled 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 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
  caution:
Observe all precautions when removing and replacing components.
  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 two 6-mm P1 Phillips-head screws identified with keyboard icons that secure the keyboard to the base enclosure.
  3. Place the notebook on its side and open the display panel.
  4. While supporting the notebook, insert a tool into the opening identified with a keyboard icon and gently press in until the keyboard releases from the top cover.
  5. Turn the notebook right side up and open the display panel fully.
  6. Using finger or a flat-bladed non-marring tool, gently lift up on the rear edge of the keyboard to disengage the keyboard from the top cover.
  7. Slide the keyboard towards the rear of the notebook to release the tabs at the front of the keyboard.
  8. Turn the keyboard face down on the top cover.
      note:
    Do not lift the keyboard further away from the notebook than necessary to access the keyboard ribbon cable and ZIF connector.
  9. Gently lift up on the locking bar to the keyboard ZIF connector and remove the keyboard ribbon cable.
      note:
    Use care to prevent damaging the ZIF connector and ribbon cable.
  10. Remove the keyboard.
Keyboard replacement
  1. Place the keyboard face down on the top cover so that the keyboard ribbon cable and ZIF connector are accessible.
  2. Insert the keyboard ribbon cable into the ZIF connector on the system board and gently press down on the ZIF connector locking bar.
      note:
    Use care to prevent damaging the ZIF connector and ribbon cable.
  3. Toe the tabs on the bottom edge of the keyboard into the top cover.
  4. Press the keyboard flat until it engages with the top cover.
  5. Close the display panel and turn the notebook upside down.
  6. Replace the two 7-mm P1 Phillips-head screws identified with keyboard icons that secure the keyboard to the base enclosure.

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