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Compaq 420 Notebook PC - Removing and Replacing the Fan

Introduction

This document is provided to assist in removing and replacing the fan for the Compaq 420 Notebook PC.

Minimum skill level

The End User requires no hardware-specific training to replace the defective part. The End user should have familiarity with system hardware and software requiring repair.

Tools required

  • Small, Phillips-head (P1) screwdrivers

Parts required

note:
Part numbers are subject to change.
The replacement part number will vary depending on the fan that is being replaced. If a part is listed as "Yes" under "Requires Return" then the defective part needs to be returned to HP. Click here for more information on returning parts to HP.
Description
Part Number
Requires Return
Fan assembly - For use in models with 15.6-inch displays
605791-001 (Modified)
Yes
note:
For customers in countries/regions with RoHS legislation* (e.g. EU, China, etc.) restricting the use of hazardous substances in electrical equipment. The use of the Original Spare part is regulated by RoHS legislation. If your unit contains a part that is labelled with the Modified Spare number, the Modified Spare must be ordered as the replacement part. If your unit contains a part that is labelled with the Original Spare number, please order the Original Spare as the replacement part. In this case either the Original Spare or the Modified Spare may be shipped which will not affect performance or functionality of the unit.

Summary of instructions

To view a video demonstrating the procedure for removing the fan, click on the link below. Or use the product video listing on the HP Services Media Library (Click here to go to HP Service Media Library), then select Fan from the menu on the upper left hand side of the screen.
Click here to view the fan removal video (right-click on the link to open in a new window/tab).

Fan removal

  1. Review the safety considerations before performing the steps listed below by clicking on the following link:
      caution:
    Failure to comply with the precautions could result in damage to your product or loss of data.
  2. Disconnect the fan cable from its connector on the system board.
  3. Remove the 3-mm P1 Phillips-head screw that secures the fan to the system board.
  4. Lift the bottom edge of the fan and slide the fan out from in between the top cover and base enclosure.

Fan replacement

  1. Toe the fan into position between the top cover and base enclosure.
  2. Replace the 3-mm P1 Phillips-head screw that secures the fan to the system board.
  3. Connect the fan cable into its connector on the system board.

Parts return


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