Sun Ultra 27 Workstation Service Manual

Replacing the I/O Board Assembly

The I/O board assembly sits beneath the DVD drive and contains the power switch, Power LED, and external connectors for the front panel.

ProcedureTo Replace the I/O Board Assembly

  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. Remove the front bezel using the procedure described in the section, To Remove the Front Bezel.

  4. Disconnect the audio cable (J1), the USB cable (J5), the IEEE 1394 cable (J8), and the I/O cable (J12) from the back side of the I/O board.

  5. Loosen the captive screw that secures the I/O board to the metal frame (see Figure 3–29).

    Figure 3–29 Removing the I/O Board Assembly

    Figure showing removal of the I/O board.

  6. Push the I/O board assembly out the front of the chassis.

  7. Slide the new I/O board assembly through the vacant I/O slot in the front of the workstation.

  8. Align the screw hole in the I/O board assembly with the captive green retaining screw and tighten the captive screw to secure the I/O board (see Figure 3–30).

    Figure 3–30 Installing the I/O Board Assembly

    Figure showing installation of the I/O board.

  9. Connect the audio cable (J1), the USB cable (J5), the IEEE 1394 cable (J8), and the I/O cable (J12) from the back side of the I/o board.

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