CAUTION:
The power-control button on the device and the power switch on the power supply do not turn off the
electrical current supplied to the device. The device also might have more than one power cord. To
remove all electrical current from the device, ensure that all power cords are disconnected from the
power source.
S004
CAUTION:
When replacing the lithium battery, use only Lenovo specified part number or an equivalent type
battery recommended by the manufacturer. If your system has a module containing a lithium battery,
replace it only with the same module type made by the same manufacturer. The battery contains
lithium and can explode if not properly used, handled, or disposed of.
Do not:
• Throw or immerse into water
• Heat to more than 100°C (212°F)
• Repair or disassemble
Dispose of the battery as required by local ordinances or regulations.
Before you remove the CMOS battery, complete the following steps:
1. Read the following sections to ensure that you work safely.
•
“Safety” on page iii
• “Installation Guidelines” on page 37
2. Remove the node from the enclosure if needed (see “Remove a node” on page 98).
3. Locate the CMOS battery on the system board.
Chapter 3. Hardware replacement procedures 53
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