HP ProBook 455 G4 fan replacement

Step-by-step HP ProBook 455 G4 fan replacement rewritten in our own words from HP's Maintenance and Service Guide, with page citations.

Part you need905774-001HP fan for the HP ProBook 455 G4
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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 66–71). 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 G4. Confirm the exact model on the service label before starting.

HP ProBook 455 G4 Notebook PC fan replacement. HP prints this procedure on printed page 70 of its maintenance and service guide.

tools and parts

  • Flat-bladed drivers, Phillips P0 and P1 drivers and Torx T8 drivers
  • Static-safe work surface
  • No spare part number for this component was found in the cached manual
  • 905774-001 - Fan computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to turn on automatically when high temperature conditions exist. These conditions are affected by high external temperatures, system power consumption, power management/battery conservation configurations, battery fast charging, and software requirements. Exhaust air is displaced through the ventilation grill located on the left side of the computer.. Source: printed page 70.

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.

  1. Position the computer upright on a flat surface. (printed page 66).

replacement

  1. Detach the fan cable from the system board. (printed page 70).
  2. Lift the cable off the clip on the side of the fan. (printed page 70).
  3. Take out the Phillips PM2.5×7.0 screw that holds the fan to the computer. (printed page 70).
  4. Lift the fan from the computer (4). (printed page 71).
  5. Put the fan back by repeating the printed removal moves in the opposite order (printed page 71).

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-g4-fan-replacement-p70

Key facts

HP document part number
903116-001
Model
HP ProBook 455 G4
Release year
2016
Screen size
15.6"
Printed pages
66–71

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