Appendix b. customer replaceable units – Lenovo ThinkPad X1 User Manual
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Appendix B. Customer Replaceable Units
Customer Replaceable Units (CRUs) are computer parts that the customer can
upgrade or replace. There are two types of CRU: self-service and optional-service.
Self-service CRUs are easy to install. They may be standalone or latched,
or require a screwdriver to remove a maximum of two screws, whereas
optional-service CRUs require some technical skill, as well as tools such as a
screwdriver. However, both self-service and optional-service CRUs are safe for
the customer to remove and replace.
Customers are responsible for replacing all self-service CRUs. Optional-service
CRUs can be removed and installed by customers or, during the warranty period,
by a Lenovo service technician.
Lenovo notebook computers contain both self-service and optional-service CRUs:
• Self-service CRUs: These CRUs unplug or are held by no more than two
screws. Examples of these types of CRUs include the ac power adapter,
power cord, and hard disk drive. Other Self-service CRUs depending on
product design may include the memory module, keyboard, and wireless card.
• Optional-service CRUs: These CRUs are isolated parts within the computer
that 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.
The Lenovo Support Web site, , provides
instructions for replacing self-service and optional-service CRUs. The Web site
offers three options to begin your search:
• Search by product number
• Search through the product auto-detect function
• Search by product category
Instructions for several critical CRUs can also be found in the Setup Instructions
that comes with your product.
The User Guide also provides instructions for replacing self-service and
optional-service CRUs. To access the User Guide, refer to “User Guide” on page 1.
If you are unable to access these instructions or if you have difficulty replacing a
CRU, you can call the Customer Support Center. For the telephone number of the
Customer Support Center for your country or region, see “Worldwide telephone
list” on page 5.
Note: Use only computer parts provided by Lenovo. For warranty information
about the CRUs for your machine type, see “Part 3 - Warranty Service
Information” on page 20.
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