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 840 G1. Confirm the exact model on the service label before starting.
HP EliteBook 840 G1 Notebook PC wwan module replacement. HP prints this procedure on printed page 67 of its maintenance and service guide, and the spare-part table for this part is on printed page 67.
tools and parts
- Flat-bladed drivers, Magnetic drivers and Phillips P0 and P1 drivers
- Static-safe work surface
704030-001- HP lt4111 LTE/EV-DO/HSPA+ Mobile Broadband Module. Source: printed page 67.704031-001- HP lt4112 LTE/HSPA+ Gobi 4G Module. Source: printed page 67.723895-001- HP hs3110 HSPA+ Mobile Broadband Module. Source: printed page 67.
preparation
HP prints its tools list and its handling and electrostatic-discharge cautions on printed page 53. Work on a grounded, static-safe surface, keep screws grouped by the position they came from, and handle boards and modules by their edges.
replacement
- Detach the WWAN antenna cables from the terminals on the WWAN module. (printed page 67).
- Take out the Phillips PM2.0×3.0 screw that holds the WWAN module to the base enclosure. (printed page 67).
- Take out WWAN module by pulling module away from the slot. (printed page 68).
- Put the wwan module back by repeating the printed removal moves in the opposite order (printed page 68).
Parts this procedure uses
- HP HP lt4111 LTE/EV-DO/HSPA+ broadband module 704030-001 (704030-001)
- HP HP lt4112 LTE/HSPA+ broadband module 704031-001 (704031-001)
- 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-840-g1-wwan-module-replacement-p67