Removing The Cover - IBM System x3550 M3 Type 4254 Installation And User Manual

Hot-swap
SATA signal
cable
Hot-swap
configuration
cable
Hot-swap
SATA power
cable

Removing the 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 cover, complete the following steps:
1. Read the safety information that begins on page vii and "Installation guidelines"
2. Turn off the server and peripheral devices and disconnect the power cords and
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IBM System x3550 M3 Types 4254 and 7944: Installation and User's Guide
on page 44.
all external cables, if necessary.
Note: When you disconnect the power source from the server, you lose the
ability to view the LEDs because the LEDs are not lit when the power
source is removed. Before you disconnect the power source, make a
note of which LEDs are lit, including the LEDs that are lit on the
operation information panel, on the light path diagnostics panel, and
LEDs inside the server on the system board; then, see the Problem
Determination and Service Guide for information about how to solve the
problem.