Lenovo 07ACH7 Manuel de l'utilisateur - Page 31

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• Gently twist the heat sink to free it from the microprocessor.

• Do not touch the thermal grease while handling the heat sink.

Coin-cell battery

Prerequisite

Before you start, read Generic Safety and Compliance Notices, and print the following instructions.

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

cool.

Your computer has a special type of memory that maintains the date, time, and settings for built-in features,

such as parallel connector assignments (configurations). A coin-cell battery keeps this information active

when you turn off the computer.

The coin-cell battery normally requires no charging or maintenance throughout its life; however, no coin-cell

battery lasts forever. If the coin-cell battery fails, the date and time information is lost. An error message is

displayed when you turn on the computer.

To dispose of the coin-cell battery, refer to the "Lithium coin-cell battery notice" in the Safety and Warranty

Guide.

For access, remove the following parts in order:

• "Computer cover" on page 14

• "Front bezel" on page 15

• "Optical drive" on page 17

• "Storage drive" on page 19

Chapter 4

CRU replacement