HP ZBook 15 G4 wwan module replacement

Step-by-step HP ZBook 15 G4 wwan module replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you need800870-002HP HP lt4120 Snapdragon X5 LTE/EVDO/HSPA+ 4G mobile broadband m 800870-002 for the HP ZBook 15 G4
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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 32–44). 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 ZBook 15 G4. Confirm the exact model on the service label before starting.

HP ZBook 15 G4 Mobile Workstation wwan module replacement. HP prints the spare part table for this procedure on printed page 43.

Tools and parts

  • Torx driver, Magnetic screwdriver and Phillips P0 and P1 screwdrivers
  • Static-safe work surface
  • 800870-002 - HP lt4120 LTE/EVDO/HSPA+ Gobi 4G Mobile Broadband Module. Source: printed page 43.
  • 918670-852 - Fibocom HP hs3210 WW HSPA+ w/o GPS. Source: printed page 43.
  • 918671-852 - Huawei HP It4132, LTE/HSPA+ 4G w/GPS M.2. Source: printed page 43.

Preparation

HP prints its tools list and its handling and electrostatic-discharge cautions on printed page 27. 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

  1. Power the machine down. (printed page 32).
  2. Detach the power from the notebook by unplugging the power cord from the computer. (printed page 32).
  3. Detach all external devices from the computer. (printed page 32).
  4. Take off the bottom cover (see that procedure on page 36). (printed page 37).
  5. Detach the battery (see that procedure on page 37). (printed page 38).
  6. Detach the WWAN antenna cables from the terminals on the WWAN module. (printed page 43).
  7. Take out the Phillips PM2.0×3.25 screw that holds the WWAN module to the system board. (The (printed page 43).
  8. Take out the wwan module by drawing the module out of the slot at an angle. (printed page 44).
  9. Install the wwan module by working back through the printed removal steps (printed page 44).

Parts this procedure uses

Manufacturer manual

HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-zbook-15-g4-wwan-module-replacement-p43

Key facts

HP document part number
915575-001
Model
HP ZBook 15 G4
Release year
2017
Screen size
15.6"
Printed pages
32–44

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