A-6
Cisco Firepower Management Center 750, 1500, 2000, 3500, and 4000 Hardware Installation Guide
Appendix A Replacing a RAID Battery Backup Unit Assembly on the Firepower Management Center 3500
BBU Replacement Instructions
Figure A-4
Removing the Power Supply Air Duct
Removing the Old BBU Assembly
The RAID BBU is held in place in a plastic battery tray (see in
Figure A-1
) that securely locks into the
base of the chassis via two tabs on the underside of the battery holder. These tabs securely slide into two
notches located on the bottom of the chassis. Cisco recommends that you remove the BBU assembly as
described in the following procedure.
Note
The plastic tray that comes with your replacement BBU assembly is different from the one currently
installed. You can discard the old plastic tray after you install your replacement BBU assembly.
To remove the BBU:
Step 1
Carefully remove the cable from the rear of the BBU unit by gently pulling the connector (not the cable)
uniformly out of the BBU connector. Note the cable polarity as you remove the connector. This is
important when reattaching the cable.
Step 2
Locate the side tab of the BBU assembly tray (see “2” in
Figure A-5
). This tab secures the BBU assembly
by locking the battery tray into place.
Step 3
Push the side tab inward towards the battery, apply downward pressure on the BBU assembly, and slide
the assembly towards the front of the chassis, away from the power supply.
1
Power supply air duct
2
Thumbscrew
