Important Safety Information; Service And Upgrades; Static Electricity Prevention - Lenovo ThinkCentre M73z 10BB User Manual

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Important safety information

CAUTION:

Before using this manual, be sure to read and understand all the related safety information for this

product. Refer to the information in this section and the safety information in the Safety, Warranty, and

Setup Guide that you received with this product. Reading and understanding this safety information

reduces the risk of personal injury and damage to your product.

If you no longer have a copy of the Safety, Warranty, and Setup Guide, you can obtain a Portable Document

Format (PDF) version from the Lenovo

Support Web site at http://www.lenovo.com/support. The Lenovo

Support Web site also provides the Safety, Warranty, and Setup Guide and this User Guide in additional

languages.

Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or

your documentation. Only use a Service Provider who is approved to repair your particular product.

Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are

referred to as options. Replacement parts approved for customer installation are referred to as Customer

Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for

customers to install options or replace CRUs. You must closely follow all instructions when installing or

replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a

product are zero. Before you remove the covers from a product equipped with a power cord, always make

sure that the power is turned off and that the product is unplugged from any power source. For more

information on CRUs, refer to Chapter 5 "Installing or replacing hardware" on page 37. If you have any

questions or concerns, contact the Customer Support Center.

Although there are no moving parts in your computer after the power cord has been disconnected, the

following warnings are required for your safety.

CAUTION:

Hazardous moving parts. Keep fingers and other body parts away.

CAUTION:

Before you open the computer cover, turn off the computer and wait several minutes until the

computer is cool.

Static electricity, although harmless to you, can seriously damage computer components and options.

Improper handling of static-sensitive parts can cause damage to the part. When you unpack an option

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