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HP Z620 Workstation - Removing and Replacing Power Supply

Introduction
This document is provided to assist in removing and replacing the power supply for the HP Z620 Workstation.
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.
Parts required
  note:
Part numbers are subject to change.
The replacement part number will vary depending on the power supply 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
Power supply - Rated at 800 W, 90% efficient rating
632912-001 (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 the unit contains a part that is labeled with the "Modified" spare number, the "Modified" spare part must be ordered as the replacement part. If the unit contains a part that is labeled with the "Original" spare number, please order the "Original" spare number as the replacement part. In this case, either the "Original" or the "Modified" spare number 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 power supply, click here to view the HP Services Media Library and then click on Remove/Replace videos. On the new window, select Power supply from the menu on the upper left hand side of the screen.
Power supply removal
  note:
This video was developed using a pre-production version of the workstation. The chassis and parts shown might not exactly match the current production version, but the part removal and replacement steps are the same.
  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 the product or loss of data.
  2. Disconnect the memory power cable from the system board.
  3. Disconnect the auxilliary power cable from the power supply.
  4. Disconnect the Second CPU module power cable from the power supply.
  5. Disconnect the main power cable from the power supply.
  6. Grasp the handle and lift the power supply straight up and out of the chassis.
Power supply replacement
  1. Lower the power supply into the power supply compartment.
  2. Push the handle down until it snaps into the closed position.
  3. Connect the main power cable to the power supply.
  4. Connect the Second CPU module power cable to the power supply.
  5. Connect the auxilliary power cable to the power supply.
  6. Connect the memory power cable to the system board.
  7.   note:
    Please refer to the product-specific maintenance and service guide at for any future technical information and/or installation guidelines for this component. Click here to refer the product-specific maintenance and service guide.

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