Chapter 6. Removing and replacing components
There are three types of replaceable components.
•
Structural parts:
Purchase and replacement of structural parts (components, such as chassis assembly,
top cover, and bezel) is your responsibility. If Lenovo acquires or installs a structural component at
your request, you will be charged for the service.
•
Tier 1 customer replaceable unit (CRU):
Replacement of Tier 1 CRUs is your responsibility. If Lenovo
installs a Tier 1 CRU at your request, you will be charged for the installation.
•
Tier 2 customer replaceable unit:
You may install a Tier 2 CRU yourself or request Lenovo to install it, at
no additional charge, under the type of warranty service that is designated for your server.
See Chapter 5 “Parts listing, Lenovo System x3550 M4 Type 7914” on page 165 to determine whether a
component is a structural part, Tier 1 CRU, or Tier 2 CRU.
For information about the terms of the warranty, see the
Warranty Information
document that comes with
the server.
For more information about getting service and assistance, see Appendix D “Getting help and technical
assistance” on page 973.
Returning a device or component
If you are instructed to return a device or component, follow all packaging instructions, and use any
packaging materials for shipping that are supplied to you.
Internal cable routing and connectors
This section provides information about routing the cables when you install some components in the server.
For more information about the requirements for cables and connecting devices, see the documentation
that comes with these devices.
Cabling SAS/SATA ServeRAID Controller
Use this information to cable the SAS/SATA ServeRAID controller.
The following illustrations show the internal routing and connectors for the SAS/SATA signal cables.
Notes:
1. To connect the SAS/SATA signal cables, make sure that you first connect the signal cable, and then the
power cable and configuration cable.
2. To disconnect the SAS/SATA signal cables, make sure that you first disconnect the power cable, and
then the signal cable and configuration cable.
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