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 450 G4. Confirm the exact model on the service label before starting.
HP ProBook 450 G4 Notebook PC WWAN module replacement. HP prints this procedure on printed page 42 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
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.
- Power the machine down. If you are unsure whether the machine is off or in Hibernation, turn the machine on, and after that shut it down through the operating system. (printed page 33).
- Place the machine in “Battery Safe mode” (the Battery Safe mode section is on page 32). (printed page 33).
- Detach every external device wired to the machine. (printed page 33).
- Cut the power by pulling the cord out of the wall outlet, and after that unplugging the AC adapter from the machine. (printed page 33).
- Take the service door (the Service door section is on page 33). (printed page 34).
replacement
- Detach the WWAN aerial leads (1) from the contacts on the WWAN module. (printed page 42).
- Take the Phillips PM2.0×3.0 fastener (2) that holds the WWAN module to the main board. (printed page 42).
- Take the WWAN module (3) out by pulling the unit out of its slot. (printed page 43).
- Fit the replacement part by working back through the printed removal steps (printed page 43).
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-probook-450-g4-wwan-module-replacement-p42