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Chapter 4: System maintenance
3. Insert the replacement DIMM carefully into the DIMM socket, with the DIMM’s notch aligned to the
DIMM socket’s notch guide.
4. Reinstall the controller module into the chassis, connect the cables and power cords, then switch
on the system.
4.1.4 Replacing the CBM (Cache Backup Module) components
The CBM is comprised of a BBU (battery backup unit) and the FBM (flash backup module). The BBU
allows your controller to provide more power during a power outage, supporting the controller to save
the data to the FBM.
WARNING!
Ensure that you have the replacement on hand before replacing your current CBM.
BBU fault conditions and precautions
If a BBU leaks, gives off bad odor, generates heat, becomes discolored or deformed, or appears
abnormal when charging or storing, remove it from the system immediately. These issues may be due to
the following:
•
The temperature sensor on the system’s charger circuit reports the temperature that exceeds the
preset threshold. The charger circuit enters to a low power and self-protection state.
•
A BBU module has been charged for more than 10 minutes. When this occurs, the charger enters a
timer fault state. Charging resumes automatically after you remove or reinstall the BBU, or after you
reset the system.
When reinstalling/replacing the BBU, remember these precautions:
•
ONLY use a replacement BBU supplied by an authorized distributor. Use of other BBUs voids your
system’s warranty.
•
ONLY dispose your used/defective BBU at an authorized battery disposal sites.
•
DO NOT place the BBU near a heat source.
•
DO NOT immerse/submerge the BBU in water or other liquids.
•
DO NOT disassemble or modify the BBU.
•
DO NOT pierce, strike, throw, or exert pressure on the BBU.
