Lenovo ThinkServer RD210 (English) Warranty and Support Information - Page 25

Chapter 3. Customer replaceable units Customer Replaceable Units (CRUs) are computer parts that can be upgraded or replaced by the customer. There are two types of CRUs: Self-service and Optional-service. Self-service CRUs are easy to install. They might be standalone, latched or require a screwdriver to remove a maximum of two screws. Optional-service CRUs require some technical skills and in some cases might also require simple tools, such as a screwdriver. However, both Self-service and Optional-service CRUs are safe for the customer to remove. Customers are responsible for replacing all Self-service CRUs. Optional-service CRUs can be removed and installed by customers or by a Lenovo service technician during the warranty period. Lenovo servers contain both Self-service and Optional-service CRUs. v Self-service CRUs: these CRUs unplug or are secured by no more than two screws. Examples of these types of CRUs include a USB device or the power cord. Other Self-service CRUs depending on product design might include hot-swap hard disk drives, hot-swap fans, hot-swap power supplies, memory DIMMs, and RAID cards. v Optional-service CRUs: these CRUs are isolated parts within the server and are concealed by an access panel that is typically secured by more than two screws. Once the access panel is removed, the specific CRU is visible. One example of an option-service CRU is the DASD backplane. v Both types of CRUs are listed in the table on the following page. The Installation and User Guide provides instructions for replacing Self-service and Optional-service CRUs. Refer to the following tables to determine which publication contains the instructions you need. Publications are available on the ThinkServer Documentation DVD and the Lenovo Web site at: http://www.lenovo.com/support © Lenovo 2005, 2009. Portions © IBM Corp. 2005. 19