Lenovo ThinkSystem SR950 7X12 Setup Manual page 128

The power control button on the device and the power switch on the power supply do not turn off the
electrical current that is supplied to the device. The device also might have more than one power
cord. To remove all electrical current from the device, ensure that all power cords are disconnected
from the power source.
CAUTION:
Make sure that all server power cords are disconnected from their power sources before performing
this procedure.
Before you remove the compute tray, remove the front cover. See "Remove the front cover" on page 139.
Complete the following steps to remove the compute tray:
Watch the procedure. A video of the replacement process is available:
• Youtube:
https://www.youtube.com/playlist?list=PLYV5R7hVcs-DbSYJFY74PoKmph7vgrkKH&playnext=1
• Youku:
http://list.youku.com/albumlist/show/id_50952215
Figure 69. Compute tray removal to stop position
Step 1. Press the button on each release lever; then, simultaneously rotate the release levers until they are
perpendicular to the chassis.
Step 2. Pull compute tray forward evenly until it stops; then, close the release levers.
Step 3. Press the release tabs on either side of the tray; then, slide the tray fully forward evenly and remove
it from the chassis.
Attention:
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ThinkSystem SR950 Setup Guide