HP EliteBook 755 G3 system board replacement

Step-by-step HP EliteBook 755 G3 system board replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you need821167-001HP Smart card reader board with cable 821167-001 for the HP EliteBook 755 G3
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On this page
  1. Applies to
  2. tools and parts
  3. preparation
  4. replacement
  5. Part numbers in our catalog
  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 39–73). 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 755 G3. Confirm the exact model on the service label before starting.

HP EliteBook 755 G3 Notebook PC system board replacement. HP prints this procedure on printed page 71 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.

  1. 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 39).
  2. Detach every external device wired to the machine. (printed page 39).
  3. Cut the power by pulling the cord out of the wall outlet, and after that unplugging the AC adapter from the machine. (printed page 39).
  4. Take the bottom cover off (the Bottom cover section is on page 34). (printed page 39).
  5. Take the battery out (the Battery section is on page 39). (printed page 40).

replacement

  1. Take the following parts out: a. Keyboard (the Keyboard section is on page 50) b. Hard drive (the Hard drive section is on page 40) c. Internal base plate (the Internal base plate section is on page 55) d. Fingerprint reader assembly (the Fingerprint reader assembly section is on page 61) e. Power button board (the Power button board section is on page 62) f. USB/audio board (the USB/audio board section is on page 70) g. Smart card reader board (the Smart card reader board section is on page 68) (printed page 71).
  2. Detach those leads from the main board: (1) Speaker lead (2) Display lead (3) Webcam lead (choose products only) (printed page 72).
  3. On a 14” machine, take the 2 Phillips PM2.5×5.0 fasteners (1) that hold the main board to the machine. (printed page 73).
  4. Lift the right side of the main board up at an angle (2). (printed page 73).
  5. Pull the main board up and toward the right to lift it out from the machine (3). (printed page 73).
  6. Fit the replacement part by working back through the printed removal steps (printed page 73).

Part numbers in our catalog

Check each part page for its source and variant notes before ordering.

Manufacturer manual

HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-755-g3-system-board-replacement-p71

Key facts

HP document part number
842508-001
Model
HP EliteBook 755 G3
Release year
2015
Screen size
15.6"
Printed pages
39–73

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