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 fan replacement. HP prints this procedure on printed page 79 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
738685-001- Fan. Source: printed page 79.738686-001- Heat sink for computer models with Intel UMA graphics memory. Source: printed page 79.738393-001- Heat sink for computer models with discrete graphics. Source: printed page 79.
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
- Detach the fan cable from the system board (printed page 79).
- Take out the heat sink assembly: (printed page 80).
- Fit the replacement part by working back through the printed removal steps (printed page 82).
Parts this procedure uses
- HP cooling fan 738685-001 (738685-001)
Part numbers in our catalog
- HP heat sink 738393-001 (738393-001)
- HP heat sink 738686-001 (738686-001)
Check each part page for its source and variant notes before ordering.
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-probook-640-g1-fan-and-heat-sink-assembly-replacement