HP ProBook 455 G7 fingerprint sensor assembly replacement

Step-by-step HP ProBook 455 G7 fingerprint sensor assembly replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you needL77275-001HP Thermal bracket included in Bracket Kit L77275-001 for the HP ProBook 455 G7
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On this page
  1. Applies to
  2. tools and parts
  3. preparation
  4. replacement
  5. Parts this procedure uses
  6. Part numbers in our catalog
  7. 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 33–50). 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 ProBook 455 G7. Confirm the exact model on the service label before starting.

HP ProBook 455 G7 Notebook PC fingerprint sensor assembly replacement. HP prints the spare part table for this procedure on printed page 50.

tools and parts

  • Tweezers, a pry tool that neither conducts nor marks and a magnetic Phillips P1 driver
  • Static-safe work surface
  • L77268-001 - Fingerprint sensor assembly. Source: printed page 50.
  • L77275-001 - Fingerprint sensor bracket (included in Bracket Kit). Source: printed page 50.
  • L52208-001 - Fingerprint sensor cable (included in the Cable Kit). Source: printed page 50.
  • L77276-001 - Fingerprint sensor insert (included in Plastics Kit; for use in models without a fingerprint sensor). Source: printed page 50.

preparation

HP prints its tools list and its handling and electrostatic-discharge cautions on printed page 27. Its preparation for disassembly is on printed page 32: power the unit down through the operating system, unplug the power cord and detach every external device before opening it. Work on a grounded, static-safe surface, keep screws grouped by the position they came from, and handle boards and modules by their edges.

  1. Get the computer ready for disassembly (Preparation for disassembly on page 32). (printed page 33).
  2. Place the computer in cell Safe mode (Battery Safe mode on page 32). (printed page 33).

replacement

  1. Take out the following components: (printed page 50).
  2. Slide the bracket toward the inside of the machine, and after that lift it off the fingerprint sensor board (1). (printed page 50).
  3. Detach the lead from the ZIF plug on the fingerprint sensor (2). (printed page 50).
  4. Take out the fingerprint sensor from the computer (3). (printed page 50).
  5. Install the fingerprint sensor assembly by working back through the printed removal steps (printed page 50).

Parts this procedure uses

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-probook-455-g7-fingerprint-sensor-assembly-replacement-p50

Key facts

HP document part number
L92358-001
Model
HP ProBook 455 G7
Release year
2020
Screen size
15.6"
Printed pages
33–50

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