Lenovo ThinkPad Reserve Edition User Manual download pdf (Page 63)

Appendix B. Customer Replaceable Units (CRUs)

Customer Replaceable Units (CRUs) are computer parts that can be upgraded

or replaced by the customer. There are two types of CRUs: internal and

external. External CRUs are easy to install, whereas internal CRUs require

some technical skills and in some cases might require tools such as a

screwdriver. However, both internal and external CRUs are safe for removal

by the customer.

Customers are responsible for replacing all external CRUs. Internal CRUs can

be removed and installed by customers or by a Lenovo service technician

during the warranty period.

Your computer contains the following types of external CRUs:

v External CRUs (pluggable): These CRUs unplug from the computer.

Examples of these types of CRUs include the ac adapter and power cord.

v External CRUs with latches: These CRUs include a latch to help you

remove and replace the part. This type of CRU for your computer is the

notebook main battery.

Your computer contains the following types of internal CRUs:

v Internal CRUs (located behind an access panel): These CRUs are isolated

parts within the computer that are concealed by an access panel that is

typically secured by either one or two screws. Once the access panel is

removed, only the specific CRU is visible. Examples of these types of CRUs

include memory modules and hard disk drives.

v Internal CRUs (located within the product): These CRUs are accessible

only by opening the computer’s outer case. Examples of these CRUs

include PCI Express Mini Cards and the integrated keyboard.

Online Access Help provides instructions for replacing internal and external

CRUs. To start the Access Help program, click Start, move the pointer to All

Programs (in Windows 2000, Programs); then to ThinkVantage . Click Access

Help.

Additionally, the Service and Troubleshooting Guide (this guide) and ThinkPad

Reserve Edition Booklet provide instructions for several critical CRU’s.

If you are unable to access these instructions or if you have difficulty

replacing a CRU, you can use either of the following additional resources:

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Lenovo ThinkPad Reserve Edition User Manual Page 63