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 Problem
Determination and Service Guide for diagnostic information.
To remove the server side cover, complete the following steps:
1. Read the safety information that begins on page v and “Installation guidelines”
on page 9.
2. Turn off the server and all attached devices (see “Turning off the server” on
page 42); 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.
Left-side cover
Cover release latch
Lock
6. Lift the side cover off the server and set it aside.
To
replace the side cover, see “Replacing the side cover” on page 33.
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 System x3400 Types 7973, 7974, 7975, and 7976: Installation Guide
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