Replacing the chassis midplane

(Trained service technician only) Use these instructions to install the chassis midplane in the NeXtScale nx360 M5 water-cooled technology tray.

To install the chassis midplane, complete the following steps.

Carefully align the chassis midplane with the guide pins in the chassis.
Figure 1. Installation of a chassis midplane into a chassis
Slide the chassis midplane half way into the chassis. Put a screwdriver or a stick in the middle of the chassis midplane so your hands are free.
Figure 2. Installation of a chassis midplane into a chassis
Attention
- You must hold the chassis midplane up against the top inside of the chassis shell and keep the chassis midplane vertical during installation. If the chassis midplane is not inserted correctly, the guide pins can contact the chassis midplane connectors and damage the connector pins.
- Do not grasp the connectors on the chassis midplane when you install it in the chassis. Touching the connectors might damage the connector pins.
- Make sure that the fan and power controller cable is out of the way when you slide the chassis midplane into the chassis.
Connect the two cables back to fan power connectors and fan signal connectors back to the chassis midplane.
Slide the chassis midplane all the way into the chassis until it stops.
Tighten the three captive screws that secure the chassis midplane to the chassis.
Rotate the top cover inwards.
Tighten the three captive screws on the top cover.
Figure 3. Top cover inward rotation

Reassemble the chassis and program the vital product data (VPD) that is stored on the card. Complete the following steps:

Slide the enclosure into the rack.
Figure 4. Sliding the enclosure
Reinstall two EIA covers at the front of the enclosure; then, reinstall eight screws.
Figure 5. EIA cover installation
Reinstall eight screws to secure two support brackets on the rear enclosure.
Figure 6. Support bracket installation
Reinstall eight screws (using the screwdriver contained in the manifold repair kit) to secure two manifolds.
Figure 7. Manifold screw locations

Table 1. Manifold screw locations
1 Screws 2 Manifold
Reinstall all power supplies back to the enclosure.
Figure 8. Hot-swap power supply installation
Reinstall the blank filler.
Figure 9. Blank filler installation
Reinstall FPC card module support bracket and FPC card module.
Figure 10. Support bracket installation

Figure 11. FPC card module installation
Reinstall manifold retention brackets that are retaining the manifolds (top enclosure position only).
Figure 12. Retention bracket installation
Align the drip sensor assembly with the enclosure and slide it into place.
Figure 13. Drip sensor assembly installation
Reinstall all EMC shields.
Figure 14. Upper EMC shields installation

Figure 15. Lower EMC shield installation
Connect any cables that you disconnected from the modules in the rear of the chassis.
Connect the chassis to power (see n1200 Enclosure Installation and Service Guide).
Write down new chassis midplane serial number (for example: Y030UN34B063) and UUID (for example: 2E2B686CC6B311E2907C6EAE8B16A49E).
Update the server firmware to the latest level (see n1200 Enclosure Installation and Service Guide).
Log in to the web interface (see n1200 Enclosure Installation and Service Guide).
Go to System Information section, click on the Midplane VPD tab.
Update the new chassis midplane serial number and UUID onto the fan and power controller (see n1200 Enclosure Installation and Service Guide).
Close the release handles on the compute nodes in order to seat the nodes in the chassis midplane connectors.
Restart any compute nodes that you shut down. See the documentation that comes with the compute node for detailed instructions.
The fan and power controller is powered-on automatically by the IMM2.

Table 1. Manifold screw locations
`1` Screws	`2` Manifold

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