SPARC T7-2 Server Service Manual

Remove the PS Backplane

This is a cold-service procedure that must be performed by qualified service personnel. Power down the server completely before performing this procedure.

1. Prepare for servicing.

   See Preparing for Service.

2. Pull both power supplies at least part-way out of the chassis, to disconnect them from the PS backplane.

   See Remove a Power Supply.

3. Remove all memory risers.

   See Remove a DIMM.

4. Remove the air divider by pulling it up and out of the chassis.
5. Remove the ribbon cable connecting the PS backplane to the motherboard (panel 1).
   
6. Remove the screw that holds the PS backplane cover in place (panel 2).
7. Remove the power supply cover (panel 3).

   You must guide two slots on the PS backplane cover around two pins on the inside of the power supply cage.

   1. Lift the cover up a little to clear the first part of the slots.
   2. Push the cover a little towards the front of the chassis.
   3. Push the tooth at the bottom of the cover to clear the edge of the power supply cage.
   4. Lift the cover out of the chassis.
8. Remove the four bus bar screws that secure the motherboard to the PS backplane.
9. Lift the PS backplane out of the chassis.
   1. Slide the PS backplane back towards the power supplies to remove the PS backplane mount from underneath the motherboard.
   2. Tilt the PS backplane to remove it from the power supply shroud.
   3. Disconnect the AC cables from the PS backplane.

      Tilt the PS backplane to access the cable connectors.

10. Install a new PS backplane.

    See Install the PS Backplane.

Related Information

• Install the PS Backplane.