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 65). 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 wwan module replacement. HP prints this procedure on printed page 65 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
723895-001- HP hs3110 HSPA+ Mobile Broadband Module. Source: printed page 65.704030-001- HP lt4111 LTE/EV-DO/HSPA+ Mobile Broadband Module. Source: printed page 65.704031-001- HP lt4112 LTE/HSPA+ Mobile Broadband Module. Source: printed page 65.
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 65).
- Remove the battery and the service cover before you reach the modem bay. (printed page 65).
- Detach both antenna leads (1) from the terminals, take out the single Phillips screw (2), and pull the card out of its slot at an angle (3). (printed page 65).
Parts this procedure uses
- HP HP hs3110 HSPA+ broadband module 723895-001 (723895-001)
- HP HP lt4111 LTE/EV-DO/HSPA+ broadband module 704030-001 (704030-001)
- HP HP lt4112 LTE/HSPA+ broadband module 704031-001 (704031-001)
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-probook-640-g1-notebook-pc-wwan-module-replacement-p65