Lenovo ThinkSystem SR850, Maintenance Manual

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Remove the processor and memory expansion tray
Use this procedure to remove the processor and memory expansion tray.
Before removing the processor and memory expansion tray:
1. Read the safety information and installation guidelines (see “Safety” on page iii and “Installation
Guidelines” on page 51).
2. Turn off the server and peripheral devices and disconnect the power cords and all external cables (see
“Power off the server” on page 8).
3. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top
cover, or remove the server from the rack.
4. Watch the procedure . A video of this procedure is available from the following links:
• https://www.youtube.com/playlist?list=PLYV5R7hVcs-B2y7oAb54mfyuLrIusa_qE
• http://list.youku.com/albumlist/show/id_50483449
5. Remove the top cover (see “Remove the top cover” on page 130).
6. If you are replacing the processor and memory expansion tray, remove the expansion tray air baffle,
DIMMs (see “Remove a memory module” on page 79), and PHMs (see “Remove a processor and heat
sink” on page 100) on the expansion tray.
Figure 106. Expansion tray air baffle removal
Attention:
• Do not remove or install DIMMs and processors on the processor and memory expansion tray when
the expansion tray is removed, for the instability might cause damages to components.
To remove the processor and memory expansion tray, complete the following steps:
Step 1. Slightly pull out power supply 2.
Attention: Do not remove the processor and memory expansion tray without physically
disconnecting power supply 2.
Step 2. Grasp the handle of the processor and memory expansion tray; then, pull and rotate it all the way
up until it is in the vertical position. This disengages the expansion tray from the system board.
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ThinkSystem SR850 Maintenance Manual