Replacing a power supply in the SG1000

The SG1000 has two power supplies for redundancy. If one of the power supplies fails, you must replace it as soon as possible to ensure that the appliance has redundant power.

Before you begin

About this task

The figure shows the two power supply units for the SG1000, which are accessible from the back of the controller.
Back of SG1000 with Two Power Supplies


  1. Unplug the power cord from the power supply.
  2. Lift the cam handle.

    Lifting the cam handle to remove SG1000 PSU
  3. Press the blue latch and pull the power supply out.

    Removing an SG1000 power supply
  4. Slide the replacement power supply into the chassis.

    Ensure that the blue latch is on the right side when you slide the unit in.

    Sliding power supply into SG1000
  5. Push the cam handle down to secure the power supply.
  6. Attach the power cord to the power supply, and ensure that the green LED comes on.