Sun Ultra 27 Workstation Service Manual

Replacing the Power Supply

This section describes removing and installing the power supply.

ProcedureTo Replace the Power Supply

  1. Power off the workstation using the procedure described in the section, To Power Off the Workstation.

  2. Remove the left-side access panel using the procedure described in the section, To Remove the Left-Side Access Panel.

  3. Unplug the AC power cord from the system.

  4. Gently lay the system on its right side on a stable, nonslip surface.

    The power supply is located in the upper left corner of the interior of the chassis (see Figure 3–26).

    Figure 3–26 Location of the Power Supply

    Graphic showing location of the power supply.

  5. Disconnect the power connectors attached to the motherboard, DVD drive, and storage backplane.

    For locations of the power suply connections, see Figure 1–4.

  6. While supporting the power supply from the interior of the workstation chassis, unscrew the four mounting screws on the back panel (see Figure 3–27).

    Retain the four screws.

  7. Remove the power supply from the interior of the system chassis.

    Figure 3–27 Removing the Power Supply From the Chassis

    Figure showing power supply removal.

  8. Position the new power supply against the internal back panel and align the holes in the power supply with the holes in back panel.

  9. Secure the power supply with the four screws.

    Figure 3–28 Installing the Power Supply

    An illustration showing the installation of the power

  10. Connect the power supply cables to the connectors on the motherboard, the DVD drive, the storage backplane, and the graphics card (optional).

  11. Close the workstation and prepare for operation using the procedures described in the section, Closing the Workstation and Preparing for Operation