HP EliteBook 850 G2 WWAN module replacement

Step-by-step HP EliteBook 850 G2 WWAN module replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you need793116-001HP WWAN module, HP lt4211 LTE/EV-DO/HSPA+ 4G 793116-001 for the HP EliteBook 850 G2
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On this page
  1. Applies to
  2. Tools and parts
  3. Preparation
  4. Replacement
  5. Parts this procedure uses
  6. Manufacturer manual
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 48–55). 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 G2. Confirm the exact model on the service label before starting.

HP EliteBook 850 G2 Notebook PC WWAN module replacement. HP prints this procedure on printed page 54 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
  • 793116-001 - HP lt4211 LTE/EV-DO/HSPA+ 4G Module. Source: printed page 54.
  • 740011-001 - HP lt4112 LTE/HSPA+ 4G Mobile Broadband Module. Source: printed page 54.
  • 748599-001 - HP hs3110 HSPA+ Mobile Broadband Module. Source: printed page 54.

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

  1. Power the machine down. If you cannot tell whether the machine is off or in Hibernation, turn the machine on, and after that shut it down through the operating system. (printed page 48).
  2. Cut the power from the machine by unplugging the power cord from the machine. (printed page 48).
  3. Detach every external device from the machine. (printed page 48).
  4. Take the service cover off (the Service cover section is on page 47). (printed page 49).
  5. Take the battery out (the Battery section is on page 49). (printed page 50).
  6. Detach the WWAN aerial leads (1) from the contacts on the WWAN module. (printed page 54).
  7. Take the Phillips PM2.0×3.0 fastener (2) that holds the WWAN module to the main board. (The WWAN module tilts up.) (printed page 54).
  8. Take the WWAN module (3) out of its slot at an angle. (printed page 55).
  9. Fit the replacement part by working back through the printed removal steps (printed page 55).

Parts this procedure uses

Manufacturer manual

HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-850-g2-wwan-module-replacement-p54

Key facts

HP document part number
803219-001
Model
HP EliteBook 850 G2
Release year
2015
Screen size
15.6"
Printed pages
48–55

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