The rear chassis assembly is a cold-service component that can be replaced only by authorized service personnel.
Use the server software to determine if the rear chassis subassembly needs to be replaced. See Detecting and Managing Faults for more information.
All five fans—see Remove a Fan Module.
All express modules or filler panels—see Remove an Express Module. Make note of the slots for each express module or filler panel so that you can install them into the same slots in the replacement rear chassis subassembly.
Rear I/O module—see Remove the Rear I/O Module.
You will install these components into the replacement rear chassis subassembly once you have replaced the faulty subassembly.