212
Upgrade and Maintenance Manual
BX920
S4
System board components
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●
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 BX920 S4 Operating Manual.
●
Ensure to insert the CMOS battery with the positive pole facing
up!
10.1.1 Required tools
●
Preliminary and concluding steps: tool-less
●
Replacing the battery: tool-less
10.1.2 Preliminary steps
Before replacing the CMOS battery, perform the following steps:
Ê
If applicable, open the rack door as described in section
.
Ê
Locate the desired server blade as described in section
defective server blade" on page 45
Ê
Shut down the server blade as described in section
.
Ê
Remove the server blade from the system unit as described in section
"Removing the server blade from the system unit" on page 55
Ê
Open the server blade as described in section