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 67). 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 EliteBook 850 G1. Confirm the exact model on the service label before starting.
HP EliteBook 850 G1 wwan module replacement. HP prints this procedure on printed page 67 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
704030-001- HP lt4111 LTE/EV-DO/HSPA+ Mobile Broadband Module. Source: printed page 67.723895-001- HP hs3110 HSPA+ Mobile Broadband Module. Source: printed page 67.
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 machine down, pull the mains lead out and unplug every peripheral. (printed page 67).
- Take the bottom cover off so the inside of the chassis is reachable. (printed page 67).
- Take the battery off the board before you touch the part you came for. (printed page 67).
Parts this procedure uses
- HP HP lt4111 LTE/EV-DO/HSPA+ broadband module 704030-001 (704030-001)
- HP HP hs3110 HSPA+ broadband module 723895-001 (723895-001)
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-850-g1-wwan-module-replacement-p67