Source: steps rewritten in our own words (no more than 8 words in a row copied; part numbers, screw sizes and warnings kept as printed) from HP's Maintenance and Service Guide (PDF, printed pages 85). Not bench-tested. We have not performed this repair; keep HP's manual open for its illustrations. Scope restrictions below are part of the guide: do not apply it to other models, generations or configurations. Service manuals are written for trained technicians; work at your own risk.
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 Notebook PC usb board replacement. HP prints this procedure on printed page 85 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
738702-001- For use in ProBook 650 G1 models equipped with a 15.6-in. display assembly. Source: printed page 85.745891-001- For use in ProBook 655 G1 models equipped with a 15.6-in. display assembly. Source: printed page 85.738400-001- For use in computer models equipped with a 14-in. display assembly. Source: printed page 85.
Preparation
Save your work, shut the computer down through the operating system, unplug AC power and every external device, and work on a grounded, static-safe surface.
Replacement
- Shut the computer down through the operating system, unplug the power cord, and disconnect every external device. (printed page 85).
- Remove the battery, service cover, hard drive, optical drive, keyboard and base enclosure before you reach the board. (printed page 85).
- Back out the four Phillips screws (3) that hold the USB board to the enclosure, lift the left side to clear the connector (2), and free the board cable (3) to lift the board out. (printed page 85).
Parts this procedure uses
- HP Screen 738400-001 (738400-001)
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-probook-640-g1-notebook-pc-usb-board-replacement-p85