Chapter 6. Removing and replacing componentsThis information provides an introduction to removing and replacing componentsin the server.Replaceable components are of three types:v Tier 1 customer replaceable unit (CRU): Replacement of Tier 1 CRUs is yourresponsibility. If IBM installs a Tier 1 CRU at your request, you will be chargedfor the installation.v Tier 2 customer replaceable unit (CRU): You may install a Tier 2 CRU yourselfor request IBM to install it, at no additional charge, under the type of warrantyservice that is designated for your server.v Field replaceable unit (FRU): FRUs must be installed only by Trained servicetechnicians.See Chapter 5, “Parts listing, System x3750 M4 Types 8722 and 8733,” on page 215to determine whether a component is a Tier 1 CRU, Tier 2 CRU, or FRU that mustbe replaced only by a trained service technician.For information about the terms of the warranty, see the Warranty Informationdocument that comes with the server.For more information about getting service and assistance, see Appendix E,“Getting help and technical assistance,” on page 841.Returning a device or componentThis information provides instructions for returning a device or component.If you are instructed to return a device or component, follow all packaginginstructions, and use any packaging materials for shipping that are supplied toyou.Removing and replacing server componentsThis information covers removing and replacing server components.This section provides information for removing and replacing components in theserver.© Copyright IBM Corp. 2013 225