Central Processing Unit Replacement

Written By: Dozuki System (and one other contributor)
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Difficulty

Moderate

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18

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Introduction

Overview

This guide demonstrates how to replace a central processing unit (CPU) in an Open Compute V2 server. == Acronyms and Terms == * CPU - Central Processing Unit * DIMM - Dual In-line Memory Module * SATA - Serial ATA; a type of computer bus interface * SFP+ - Enhanced Small Form-factor Pluggable; a type of hot-plug transceiver

  1. The server can be powered off remotely or on the hardware itself.

    • The server can be powered off remotely or on the hardware itself.

    • Remote Power Down: Login to the server to power it off.

    • shutdown -h now;exit

    • Hardware Power Down: Press and hold the power switch for at least three seconds, as annotated.

    Edit

  2. Press the button on the server sled release lever and pull the lever. This unlocks the sled from the chassis. This unlocks the sled from the chassis.

    • Press the button on the server sled release lever and pull the lever.

    • This unlocks the sled from the chassis.

    Edit

  3. Disconnect the 10G SFP+ cable from the network interface controller. Disconnect the SATA / power cables connected to the boot hard disk drive. Node 1 (right-most sled) boot drive is the top drive in the chassis. Node 0 (left-most sled) boot drive is the bottom drive in the chassis.

    • Disconnect the 10G SFP+ cable from the network interface controller.

    • Disconnect the SATA / power cables connected to the boot hard disk drive.

    • Node 1 (right-most sled) boot drive is the top drive in the chassis. Node 0 (left-most sled) boot drive is the bottom drive in the chassis.

    • Disconnecting the SATA / power cable can be performed on either the motherboard or HDD end of server node 1 . However, the SATA / power cable must be disconnected from the motherboard end on node 0.

    Edit

  4. Pull the server sled from the chassis.

    • Pull the server sled from the chassis.

    Edit

  5. Place the server sled on a work surface.

    • Place the server sled on a work surface.

    Edit

  6. Identify the DIMM and CPU from the image shown.

    • Identify the DIMM and CPU from the image shown.

    • Use the image to correlate DIMM and CPU sockets with the case ticket.

    Edit

  7. Remove the lid from the server node. Engage the lid with both hands, as shown. Push the lid towards the rear of the server.

    • Remove the lid from the server node.

    • Engage the lid with both hands, as shown.

    • Push the lid towards the rear of the server.

    • Lift the lid.

    Edit

  8. Loosen four Phillips #2 screws. Lightly press the heatsink downwards next to the screw being loosened. Loosen screws in a diagonal order.

    • Loosen four Phillips #2 screws.

    • Lightly press the heatsink downwards next to the screw being loosened.

    • Loosen screws in a diagonal order.

    Edit

  9. Lift and remove the heatsink.

    • Lift and remove the heatsink.

    Edit

  10. Press the CPU retention bracket lever (nearest the unlock symbol) down and away from the CPU. The retention lever is spring loaded. Apply force to the lever as it rises. The retention lever is spring loaded. Apply force to the lever as it rises.

    • Press the CPU retention bracket lever (nearest the unlock symbol) down and away from the CPU.

    • The retention lever is spring loaded. Apply force to the lever as it rises.

    Edit

  11. Repeat the process for the second CPU retention bracket lever.

    • Repeat the process for the second CPU retention bracket lever.

    Edit

  12. Pivot the gate so that the CPU can be removed. Lift the CPU away from its socket. Take care not to touch the LGA socket pins as you lift the CPU.

    • Pivot the gate so that the CPU can be removed.

    • Lift the CPU away from its socket.

    • Take care not to touch the LGA socket pins as you lift the CPU.

    Edit

  13. Align the arrow printed on the CPU with the arrow on the CPU retention bracket.

    • Align the arrow printed on the CPU with the arrow on the CPU retention bracket.

    • Seat the CPU in the socket.

    • Be careful when lowering the CPU into the socket. Mishandling the CPU can bend the LGA socket pins.

    Edit

  14. Lower the CPU retention gate. Lower and lock the CPU retention levers, as shown. Begin with the 'unlocked' lever symbol, then proceed to the 'locked' symbol retention lever.

    • Lower the CPU retention gate.

    • Lower and lock the CPU retention levers, as shown.

    • Begin with the 'unlocked' lever symbol, then proceed to the 'locked' symbol retention lever.

    Edit

  15. Apply thermal compound to the CPU, as shown. About 1 gram of thermal compound should be distributed evenly in five dots. Align two heatsink posts with two holes in the CPU housing bracket, as annotated.

    • Apply thermal compound to the CPU, as shown.

    • About 1 gram of thermal compound should be distributed evenly in five dots.

    • Align two heatsink posts with two holes in the CPU housing bracket, as annotated.

    • Pivot the heatsink so that all four screws are seated in the CPU housing bracket holes.

    • Tighten the four screws on the heatsink.

    Edit

  16. Install the lid back on the server. Install the lid back on the server. Install the lid back on the server.

    • Install the lid back on the server.

    Edit

  17. Slide the server back into the rack. Connect the peripheral cables (SATA / power and networking) that were previously disconnected.

    • Slide the server back into the rack.

    • Connect the peripheral cables (SATA / power and networking) that were previously disconnected.

    Edit

  18. Power on the server.

    • Power on the server.

    Edit
Conclusion

This work is licensed under a Creative Commons Attribution 4.0 International License.

Author

with 1 other contributor

Dozuki System

Member since: 9/24/09

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