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 G11. Confirm the exact model on the service label before starting.
HP EliteBook 840 14 inch G11 Notebook PC WWAN module replacement. HP prints this procedure on printed page 40 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
M78607-001- Qualcomm 9205 LTE-M (CAT-M1). Source: printed page 40.N62079-001- HP 5000 5G Solution. Source: printed page 40.N65633-001- HP 4000 4G LTE - Advanced Pro module authorized for use in the computer by the governmental agency that regulates wireless devices in your country or region. If you replace the module and then receive a warning message, remove the module to restore device functionality, and then contact technical support.. Source: printed page 40.
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
- Get the machine ready for taking apart (the Preparation for disassembly section is on page 37). (printed page 39).
- Take the bottom cover off (the Bottom cover section is on page 37). (printed page 39).
- Detach the battery lead from the main board (the Battery section is on page 48). (printed page 39).
- Detach the WWAN aerial leads from the contacts (1) on the WWAN module. The number of aerial leads can vary. (printed page 40).
- Undo the Phillips M2.0 × 2.5 fastener (2), and after that take the WWAN module out (3). (printed page 41).
- When the WWAN aerial is not on the terminal of the WWAN unit, a protective sleeve must be installed on the aerial connector, as shown in the following illustration. (printed page 41).
- Fit the replacement part by working back through the printed removal steps (printed page 41).
Parts this procedure uses
- HP WWAN module, Qualcomm 9205 LTE-M (CAT-M1) M78607-001 (M78607-001)
- HP WWAN module, HP 5000 5G Solution N62079-001 (N62079-001)
- HP Motherboard N65633-001 (N65633-001)
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-840-14-inch-g11-wwan-module-replacement-p40