How to Remove the Subassembly Module

Before You Begin

Review the following topics:

• Sun Fire X4800 Server Subassembly Module Overview

• Midplane Overview

1. Before replacing this component, backup the motherboard FRUID information. See Managing FRUID Information.
2. Prepare the server for service. See How to Prepare for Service.
3. Disconnect the AC power cables from the rear of the server.

   The AC power connectors are retained by a wire latch. Lift the retaining latch and pull the connector out of its socket (see AC Power Block Overview).

4. Disengage the power supplies. See How to Remove a Power Supply.

   Partially remove the power supplies. This action ensures that the power supplies are disconnected from the midplane connectors.

5. Label and remove the CMODs and CPU filler modules. See How to Remove a CPU Module (CMOD).

   CMODs and CPU filler modules must be returned to their original slots. For CMOD slot designations, see CPU Module (CMOD) Designations.

6. Disconnect the three hard drive backplane cables from the server midplane.

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   Note - Do not disconnect the cables from the hard drive backplane.

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7. Label and disconnect the cables connected to the rear of the server.

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   Note - Do not disconnect the cables at the hard drive backplane.

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8. Remove the four Fan modules. See How to Remove a Fan Module.
9. Remove the fan controller boards. See How to Remove a Fan Module Controller Board.
10. Remove the Network Express modules or Network Express module Ffillers. See How to Remove a NEM or a NEM Filler.

    If you are not replacing the SAM, removal of this component is optional but recommended.

11. Remove the PCIe Express modules or PCIe Express module fillers. See How to Remove a PCIe EM.

    If you are not replacing the SAM, removal of this component is optional but recommended.

12. Remove the SP module. See How to Remove the SP Module.

    If you are not replacing the SAM, removal of this component is optional but recommended.

13. Use a long No. 2 screwdriver to loosen the five green captive screws that secure the SAM to the server chassis.

    Two of the captive screws are accessible through the airflow vanes of Fan module bays FM 0 and FM 2. To access the screws lift open the top and bottom air flow vanes.

    
    
14. To remove the SAM, carefully slide it out of the chassis.

Next Steps

How to Install the Subassembly Module