• Keep static-sensitive parts in their static-protective packages until installation to prevent exposure to
static electricity. Handle the parts with an electrostatic-discharge wrist strap or other grounding systems.
Place the parts on a static-protective surface.
Procedure
Step 1. Remove the top cover. See
“Remove the top cover” on page 282.
Step 2. Remove any parts and disconnect any cables that might impede your access to the CMOS battery.
Step 3. Locate the CMOS battery. See “System-board-assembly connectors” on page 32.
Step 4. Open the battery clip as shown and carefully take the CMOS battery out of the socket.
Attention:
• Failing to remove the CMOS battery properly might damage the socket on the processor board.
Any damage to the socket might require replacing the processor board.
• Do not tilt or push the CMOS battery by using excessive force.
Figure 95. CMOS battery removal
1. Press the clip on the CMOS battery socket.
2.
Remove the CMOS battery.
After you finish
1. Install a new CMOS battery. See
“Install the CMOS battery (CR2032)” on page 107.
2. If you are instructed to return the component or optional device, follow all packaging instructions, and
use any packaging materials for shipping that are supplied to you.
3. Dispose of the CMOS battery as required by local ordinances or regulations.
Install the CMOS battery (CR2032)
Use this information to install the CMOS battery.
About this task
The following tips describe information that you must consider when installing the CMOS battery.
• Lenovo has designed this product with your safety in mind. The lithium CMOS battery must be handled
correctly to avoid possible danger. If you replace the CMOS battery, you must adhere to local ordinances
or regulations for battery disposal.
• If you replace the original lithium battery with a heavy-metal battery or a battery with heavy-metal
components, be aware of the following environmental consideration. Batteries and accumulators that
contain heavy metals must not be disposed of with normal domestic waste. They will be taken back free
of charge by the manufacturer, distributor, or representative, to be recycled or disposed of in a proper
manner.
Chapter 5. Hardware replacement procedures 107
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