The complementary metal-oxide semiconductor (CMOS) battery is a coin-shaped power cell
that is mounted inside the node canister. It is used to keep the system time when there is no power
to the node canister.
Procedure
Remove the node canister, as described in Reseating a node canister in the control enclosure .
Removing the CMOS battery
Remove the node canister cover, as described in Removing and replacing the cover of a node canister .
Locate the CMOS battery inside the node canister.
Gently pop the CMOS battery out of the battery holder, as shown in Figure 1
Figure 1. Replacing a CMOS battery
Replacing the CMOS battery
.
Gently push the new coin cell down into the battery holder.
Replace the node canister cover, as described in Removing and replacing the cover of a node canister .
Reinsert the node canister, as described in Reseating a node canister in the control enclosure .
If the canister does not begin to power up, check that it is fully inserted into the
enclosure.
Reconnect all cables.
Use the management GUI to check that the time and date settings of the system are
correct.
If a CMOS battery error is present in the Event Log, run the fix procedure.