IBM x3550 - System - 7978, Problem Determination And Service Manual

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Chapter 4. Removing and replacing server components
Replaceable components are of three types:
v Tier 1 customer replaceable unit (CRU): Replacement of Tier 1 CRUs is your
responsibility. If IBM installs a Tier 1 CRU at your request, you will be charged for
the installation.
v
Tier 2 customer replaceable unit: You may install a Tier 2 CRU yourself or
request IBM to install it, at no additional charge, under the type of warranty
service that is designated for your server.
v Field replaceable unit (FRU): FRUs must be installed only by trained service
technicians.
See Chapter 3, “Parts listing, Type 7978 and 1913 server,” on page 29 to determine
whether a component is a Tier 1 CRU, Tier 2 CRU, or FRU.
For information about the terms of the warranty and getting service and assistance,
see the
Warranty and Support Information document.
Installation guidelines
Before you remove or replace a component, read the following information:
v
Read the safety information that begins on page “Safety” on page vii and the
guidelines in “Handling static-sensitive devices” on page 40. This information will
help you work safely.
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 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 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 You do not have to turn off the server to install or replace hot-plug Universal
Serial Bus (USB) devices.
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
© Copyright IBM Corp. 2006, 2007
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