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 on the IBM Documentation CD for
information about how to run diagnostics.
v Observe good housekeeping in the area where you are working. Place removed
covers and other parts in a safe place.
v If you must start the server while the cover is removed, make sure that no one is
near the server and that no tools or other objects have been left inside the server.
v Do not attempt to lift an object that you think is too heavy for you. If you have
to lift a heavy object, observe the following precautions:
– Make sure that you can stand safely without slipping.
– Distribute the weight of the object equally between your feet.
– Use a slow lifting force. Never move suddenly or twist when you lift a heavy
object.
– To avoid straining the muscles in your back, lift by standing or by pushing
up with your leg muscles.
v Make sure that you have an adequate number of properly grounded electrical
outlets for the server, monitor, and other devices.
v Back up all important data before you make changes to disk drives.
v Have a small flat-blade screwdriver available.
v To view the error LEDs on the system board and internal components, leave the
server connected to power.
v You do not have to turn off the server to install or replace hot-swap power
supplies, hot-swap hard disk drives, hot-swap fans, or hot-plug Universal Serial
Bus (USB) devices. However, you must turn off the server before you perform
any steps that involve removing or installing adapter cables.
v Blue on a component indicates touch points, where you can grip the component
to remove it from or install it in the server, open or close a latch, and so on.
v Orange on a component or an orange label on or near a component indicates
that the component can be hot-swapped, which means that if the server and
operating system support hot-swap capability, you can remove or install the
component while the server is running. (Orange can also indicate touch points
on hot-swap components.) See the instructions for removing or installing a
specific hot-swap component for any additional procedures that you might have
to perform before you remove or install the component.
v When you are finished working on the server, reinstall all safety shields, guards,
labels, and ground wires.
A single-power-supply server operating at 208 V ac
One power supply operating at 208 V ac supports a fully populated server, but it
does not support power or cooling redundancy.
System reliability guidelines
To help ensure proper cooling and system reliability, make sure that the following
requirements are met:
v Each of the drive bays has a drive or an electromagnetic compatibility (EMC)
shield installed in it.
Chapter 2. Installing optional devices 39
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