HP EliteBook 835 G8 WWAN module replacement

Step-by-step HP EliteBook 835 G8 WWAN module replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you needL70670-001HP wireless card L70670-001 for the HP EliteBook 835 G8
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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 34–39). 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 835 G8. Confirm the exact model on the service label before starting.

HP EliteBook 835 G8 Notebook PC WWAN module replacement. HP prints this procedure on printed page 38 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
  • L70670-001 - Intel XMM 7360 LTE-Advanced (Cat 9). Source: printed page 38.
  • M53545-001 - Classic LTE UICC card 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 38.

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. Get the machine ready for taking apart (the Preparation for disassembly section is on page 32). (printed page 34).
  2. Take the bottom cover off (the Bottom cover section is on page 32). (printed page 34).
  3. Detach the battery lead from the main board (the Battery section is on page 42). (printed page 34).
  4. Detach the WWAN aerial leads (1) from the contacts on the WWAN module. (printed page 38).
  5. Take the Phillips M2.0 × 2.0 fastener (2) that holds the WWAN unit to the lower cover. (The WWAN module tilts up.) (printed page 38).
  6. Take the WWAN module (3) out of its slot at an angle. (printed page 38).
  7. 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 39).
  8. Fit the replacement part by working back through the printed removal steps (printed page 39).

Parts this procedure uses

Manufacturer manual

HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-835-g8-wwan-module-replacement-p38

Key facts

HP document part number
M17148-001
Model
HP EliteBook 835 G8
Release year
2021
Screen size
13.3"
Printed pages
34–39

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