Lenovo ThinkServer TD100x - Manual (Page 28)

Removing the side cover
Important: Before you install optional hardware, make sure that the server is
working correctly. Start the server, and make sure that the operating system starts,
if an operating system is installed, or that a 19990305 error code is displayed,
indicating that an operating system was not found but the server is otherwise
working correctly. If the server is not working correctly, see the Hardware
Maintenance Manual for diagnostic information.
To remove the server side cover, complete the following steps:
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 9.
2. Turn off the server and all attached devices (see “Turning off the server” on
page 46); then, disconnect all power cords and external cables.
3. Lay the server on its side.
4. Unlock the side cover.
5. Press the cover-release latch down (as indicated by the arrow) and rotate the
cover away from the server.
1 Cover release latch
2 Lock
3 Left-side cover
6. Lift the side cover off the server and set it aside.
To replace the side cover, see “Replacing the side cover” on page 38.
Attention: For proper cooling and airflow, replace the cover before turning on the
server. Operating the server for extended periods of time (more than 30 minutes)
with the cover removed might damage server components.
12 ThinkServer TD100 and TD100x Types 4203, 4204, 4205, 4206, 6398, 6399, 6419, and 6429: Installation Guide