Lenovo ThinkSystem SR950 Setup Manual page 319

"
CAUTION:
Make sure that all server power cords are disconnected from their power sources before performing
this procedure.
Before you remove an upper fan cage:
1. Remove the front cover. See "Remove the front cover" on page 322.
2. Remove the upper compute tray or storage tray. See "Remove a compute tray" on page 305 or
"Remove a storage tray" on page 375.
3. If you removed a compute tray and it has one or more compute system boards or a system board filler
installed, remove the system boards or system board filler. See "Remove a system board" on page 309
or "Remove a system board filler" on page 312.
4. Turn the tray upside down.
Complete the following steps to remove an upper fan cage.
Watch the procedure. A video of the installation process is available:
•
YouTube
•
Youku
Figure 83. Upper fan cage removal
" on page 56
Appendix B. Component reference
315