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## Remove the Rear Chassis Subassembly

The rear chassis assembly is a cold-service component that can be replaced only by authorized service personnel.

1. Verify that the rear chassis subassembly needs to be replaced.

   Use the server software to determine if the rear chassis subassembly needs to be replaced. See Detecting and Managing Faults for more information.

2. Power down the server.

   See Removing Power From the Server.

3. Go to the rear of the server and remove the following components from the rear chassis subassembly:

   - 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.

4. Locate the four green mounting screws for the rear chassis subassembly.
5. Using a Phillips screwdriver, loosen the four screws that secure the rear chassis subassembly to the system.
6. Slide the rear chassis subassembly out and away from the server.

##### Related Information

- Rear Chassis Subassembly Overview

- Install the Rear Chassis Subassembly

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