416 Upgrade and Maintenance Manual TX140 S1
System board and components
14.1 Replacing the CMOS battery
CMOS memory (volatile BIOS memory) and the real-time clock are powered by
a lithium coin cell (CMOS battery). This cell lasts up to ten years, depending on
ambient temperature and use.
If the CMOS battery is depleted or falls below minimum voltage levels, it need
to be replaced immediately.
Safety notes
V CAUTION!
● The CMOS battery 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 further safety information, please refer to section "Environmental
protection" in the PRIMERGY TX140 S1 Server Operating Manual.
● Ensure to insert the CMOS battery the with the positive pole
facing up!
14.1.1 Required tools
● Preliminary and concluding steps:
– Phillips PH2 / (+) No. 2 screw driver
● Replacing the battery: tool-less; recommended: tooth pick
Upgrade and Repair Units (URU)
Average task duration: 5 minutes