TX2550 M4 Upgrade and Maintenance Manual 415
System board and components
14.2 CMOS battery
14.2.1 Replacing the CMOS battery
Safety notes
V CAUTION!
● The CMOS battery (CR2032) must be replaced with an identical
battery or with a battery type recommended by the manufacturer.
● Keep lithium batteries away from children.
● Do not throw batteries into the trash can. Lithium batteries must be
disposed of in accordance with local regulations concerning special
waste.
● For more safety information, see section "Environmental protection"
in the operating manual of your server.
● Ensure to insert the CMOS battery with the positive pole facing
up!
14.2.1.1 Preliminary steps
Ê "Locating the defective server" on page 49
Ê "Shutting down the server" on page 52
Ê "Disconnecting the power cord" on page 53
Ê "Getting access to the component" on page 54
Upgrade and Repair Unit
(URU)
Hardware: 5 minutes
Tools: tool-less; recommended: tooth pick