Lenovo IdeaCentre 3, User Manual

Page: 33 / 44

• 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 21
Chapter 4
.
CRU replacement
27