IBM 7379E2U, Installation And User Manual

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Removing the left-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 cover, complete the following steps:
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 28.
2. If you are planning to view the error LEDs that are on the system board and
components, leave the server connected to power and go directly to step 5.
3. Turn off the server and all attached devices.
4. Disconnect all external cables and power cords.
5. Using the supplied key, unlock the left-side cover.
6. Pull the cover-release latch down and rotate the top edge of the cover away
from the server.
Attention: For proper cooling and airflow, replace the cover before you turn
on the server. Operating the server for extended periods of time (more than 30
minutes) with the cover removed might damage server components.
7. Remove the left-side cover from the server.
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IBM System x3400 M3 Type 7378/7379: Installation and User's Guide