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HP Z420 Workstation - Removing and Replacing the Memory

Introduction
This document is provided to assist in removing and replacing the memory for the HP Z420 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 memory 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
4GB, 1600-MHz, PC3-12800E 256Mx8, DDR3-1600 Dual In-Line Memory Module (DIMM)
682413-001 (Modified)
Yes
2GB, 1600-MHz, PC3-12800E 256Mx8, DDR3-1600 Dual In-Line Memory Module (DIMM)
682412-001 (Modified)
Yes
8GB, 1600-MHz, PC3-12800E 512Mx8, CL=11, DDR3-1600 Dual In-Line Memory Module (DIMM)
677034-001 (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 memory, click here to view the HP Services Media Library and then click on Remove/Replace videos. On the new window, select Memory from the menu on the upper left hand side of the screen.
Memory 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 the product or loss of data.
  2. Push down and out on the memory socket latches to release the memory module.
  3. Pull the memory module up and out of the socket.
Memory replacement
  1. Ensure that the memory socket latches are pushed down and away from the memory socket.
  2. Match the notch on the memory module with the key in the memory socket.
  3. Push the module down firmly into the socket until the latches snap into place and the module is fully seated.
  note:
Please refer to the product-specific Maintenance and Service guide for any future technical information and/or installation guidelines for this component. Click here to access product-specific Maintenance and Service guide.

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