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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.
S005
CAUTION:
The battery is a lithium ion battery. To avoid possible explosion, do not burn the battery. Exchange it
only with the approved part. Recycle or discard the battery as instructed by local regulations.
Before removing the CMOS battery:
1. Read the safety information and installation guidelines (see
Guidelines" on page
2. Turn off the server and peripheral devices and disconnect the power cords and all external cables (see
"Power off the server" on page
3. If the server is installed in a rack, slide the server out on its rack slide rails to gain access to the top
cover, or remove the server from the rack.
4. Remove the top cover (see
5. Remove the system board air baffle (see
on page
126) or the processor and memory expansion tray and the expansion tray air baffle (see
"Remove the processor and memory expansion tray" on page
ThinkSystem SR850 Maintenance Manual
62
55).
11).
"Remove the top cover" on page
"Remove the system board air baffle and the power interposer"
"Safety" on page iii
and
145).
120).
"Installation
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