Lenovo ThinkAgile VX7820 User Manual page 237

The power-control button on the device and the power switch on the power supply do not turn off the
electrical current 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 an upper storage interposer:
1. Remove the front cover. See "Remove the front cover" on page 131.
2. Remove the upper compute tray or storage tray. See "Remove a compute tray" on page 115 or
"Remove a storage tray" on page 232.
3. If you removed a compute tray and it has one or more compute system boards installed or a system
board filler, remove the system boards or system board filler. See "Remove a system board" on page
109.
4. Turn the tray upside down and remove the upper fan cage. See "Remove a fan cage (upper tray)" on
page 121.
Complete the following steps to remove an upper storage interposer.
Watch the procedure. A video of the installation process is available:
•
YouTube
•
Youku
Figure 135. Upper storage interposer removal
Step 1. Disconnect all power and data cables from the storage interposer.
Step 2. Slide the RAID card forward to disconnect the RAID card from the storage interposer; then, rotate
the RAID card upward. (Leave the three cables connected to the RAID card.)
" on page 89
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Chapter 9 Hardware replacement procedures
227