HP EliteBook 840 G6 fingerprint reader assembly replacement

Step-by-step HP EliteBook 840 G6 fingerprint reader assembly replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you needL62737-001HP USB board bracket (included in the Bracket Kit) L62737-001 for the HP EliteBook 840 G6
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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 39–69). 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 840 G6. Confirm the exact model on the service label before starting.

Replacing the fingerprint reader assembly on the HP EliteBook 840 G6 Notebook PC. HP lists the fingerprint reader spares in Table 6-14 on printed page 69 of the maintenance manual.

Tools and parts

  • Non-conductive, non-marking pry tool, magnetic Phillips P1 screwdriver, and Torx T8 screwdriver (HP tools required, printed page 32)
  • Static-safe work surface for the computer and for the parts you set aside
  • L62741-001 - Fingerprint reader assembly (includes cable). Source: printed page 69.
  • L62737-001 - Fingerprint reader bracket (included in Bracket Kit). Source: printed page 69.

> You will need the following tools to complete the removal and replacement procedures: ● Non-conductive, non-marking pry tool ● Magnetic Phillips P1 screwdriver ● Torx T8 screwdriver

Preparation

HP sets out its preliminary safety rules on printed page 32: the tools the job needs, the instruction to keep every removed subassembly and its screws clear of the work area, the warning that excessive force can damage plastic parts, and the requirement that cables sit in their proper routing during reassembly. The preparation steps printed on page 37 ask you to shut the computer down, unplug the power cord, and disconnect every external device. This procedure runs deeper than that: HP removes the bottom cover, the battery (procedure on printed page 49), and the system board (procedure on printed page 66) before it reaches the fingerprint reader assembly.

Replacement

  1. Prepare the computer for disassembly: shut it down, unplug the power cord, and disconnect external devices (printed pages 39, 37, 37, and 37).
  2. Remove the bottom cover to open the chassis (printed page 39).
  3. Take the battery out (printed page 59).
  4. Take the system board out (printed page 69).
  5. Back out the Phillips M2.0 × 3.0 screw (1) holding the fingerprint reader bracket to the computer (printed page 69).
  6. Lift the bracket away from the fingerprint reader assembly (2) (printed page 69).
  7. Pry the fingerprint reader board loose with a tool (3) and take the assembly out of the computer (4) (printed pages 69, and 55).
  8. Install the fingerprint reader assembly by reversing the removal steps (printed page 69).

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-elitebook-840-g6-fingerprint-reader-assembly-replacement-p69

Key facts

HP document part number
L54460-001
Model
HP EliteBook 840 G6
Release year
2019
Screen size
14"
Printed pages
39–69

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