HP ProBook 470 G4 fan/heat sink assembly replacement

Step-by-step HP ProBook 470 G4 fan/heat sink assembly 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 470 G4
View part & buy links
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 31–66). 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 470 G4. Confirm the exact model on the service label before starting.

HP ProBook 470 G4 Notebook PC fan/heat sink assembly replacement. HP prints this procedure on printed page 66 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
  • 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 66.

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 31).
  2. Detach every external device wired to the machine. (printed page 64).

replacement

  1. Cut the power by pulling the cord out of the wall outlet and after that unplugging the AC adapter from the machine. (printed page 66).
  2. Take the battery out (the Battery section is on page 62), and after that take the following parts out: a. Service door (the Service door section is on page 31). b. Hard drive (the Hard drive section is on page 34) c. Optical drive (the Optical drive section is on page 32) d. Keyboard (the Keyboard section is on page 41) e. Top cover (the Top cover section is on page 48) f. Battery (the Battery section is on page 62) (printed page 66).

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-470-g4-fan-heat-sink-assembly-replacement-p66

Key facts

HP document part number
903120-001
Model
HP ProBook 470 G4
Release year
2016
Screen size
17.3"
Printed pages
31–66

Related