Labels: DOCUMENTED = taken from HP's manual; PROPOSED = our own joining or ordering of HP's directions, not an HP instruction; UNPERFORMED = a suggested check that has not been carried out.
Applies to
HP ProBook 640 G1. Confirm the exact model on the service label before starting.
HP ProBook 640 G1 function button board replacement. HP prints this procedure on printed page 96 of its maintenance and service guide.
tools and parts
- Screwdrivers and a non-marking pry tool as HP lists for this procedure
- Static-safe work surface
738703-001- For use on models equipped with a 15.6-in. display assembly. Source: printed page 96.738401-001- For use on models equipped with a 14-in. display assembly. Source: printed page 96.
preparation
Save your work and shut the computer down through the operating system, unplug AC power and every external device, and work on a clean, grounded, ESD-protected surface while sorting each screw by its original location. Handle every cable by its connector and put each one back in its own place during reassembly.
replacement
- Let go of the ZIF connector to which the function button board lead is attached, and then disconnect (printed page 97).
- Take out the three Phillips PM2.0×3.0 screws that hold the function button board to the top cover. (printed page 97).
- Lift the function button board to remove it. (printed page 97).
- Fit the replacement part by working back through the printed removal steps (printed page 97).
Parts this procedure uses
- HP Function button board with cable 738703-001 (738703-001)
- HP Motherboard 738401-001 (738401-001)
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-probook-640-g1-function-button-board-replacement