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Sun Enterprise 3500 System Reference Manual

SBus Cards

There are three SBus card locations on the SBus+ I/O board; the Graphics+ I/O board has two.

Figure 4-9 SBus+ I/O Board SBus Slots

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Figure 4-10 Graphics+ I/O Board SBus Slots

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Nylon Standoffs

Nylon standoffs lock the SBus cards to the I/O+ boards. See Figure 4-11.

Figure 4-11 Locking and Unlocking Standoffs

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Removing an SBus Card

  1. Use the procedures in "Removing a Board" to remove the applicable I/O+ board.

  2. Locate the card to be removed.

    See Figure 4-10.

  3. Remove the two screws that secure the SBus card to the I/O+ board front panel.

    Save the screws for installation of a replacement SBus card or a filler panel.

  4. Unlock the SBus card by pulling up the tips of the two standoffs.

    See Figure 4-11.

  5. Hold the card by the edges near the connector and gently rock the card back and forth to loosen it from the socket.

    You may have to remove the SBus cards or the graphics (UPA) card next to this card in order to have enough room to hold onto the SBus card being removed.

    Caution - Caution -

    The connector housing may break if the SBus card is tilted too far.

  6. Lift the SBus card from the socket at an angle while guiding the face plate out from the back panel opening. See Figure 4-12.

    Figure 4-12 Removing or Installing an SBus Card

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  7. Place the SBus card in an antistatic bag.

  8. If the SBus card is not immediately replaced, install a filler panel (part number 340-2305) on the I/O+ board back panel opening. To secure the filler panel, use the screws that were removed in Step 3.

    Caution - Caution -

    Be sure to install the filler panel right-side up. Installing it upside down creates a gap at the top edge of the SBus slot opening that can impair system cooling and regulatory compliance.

  9. Replace the I/O+ board. Use the procedures in "Installing a Board".

Installing an SBus Card

Removing Adapter and Card Retainer
Note -

If the new SBus card does not have an adapter plate or the Link Integrity Test feature, proceed to "Installation".

  1. Attach a wrist strap and take the SBus card out of the protective packaging. Place the SBus card on an antistatic mat.

  2. Remove the adapter bracket from the SBus card rear panel. See Figure 4-13.

    Remove the two screws securing the adapter to the card rear panel (the adapter bracket and the screws are not needed for this installation).

    Figure 4-13 SBus Card Rear Panel with Adapter

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  3. Remove the black plastic card retainer shipped with the card. See Figure 4-14.

    Spread the ends of the retainer apart to remove it from the card (the retainer is not needed for this installation).

    Figure 4-14 Card Retainer

    Graphic

Link Integrity Test

For the system to communicate with a network, the tpe-link-test? settings for the onboard Ethernet ports must be compatible with the setting at the network hub. The tpe-link-test? variable is set separately for the onboard Ethernet port on each I/O+ board. The variable is also set for any SBus Ethernet cards in the system.

If you have problems verifying connection between Sun equipment and your hub, verify that your hub also has the link test function enabled. Also, refer to the manual provided with your hub.

  1. Ensure that the SBus card is on an antistatic mat.

  2. For DSBE/S and FSBE/S cards: remove the two outer retaining screws (see Figure 4-15), but do NOT remove the middle screw or the springfinger.

    Use a Phillips #0 screwdriver and a 3/16 nut driver or socket wrench.

  3. For DSBE/S and FSBE/S cards, configure jumper J0302 for Link Integrity Test functionality.

    See Figure 4-15 (DSBE/S) or Figure 4-16 (FSBE/S).

    1. Put the shunt over both pins to disable the Link Integrity Test. See Figure 4-17 "Disabled."

    2. Put the shunt in one pin to enable the Link Integrity Test. See Figure 4-17 "Enabled."

      Caution - Caution -

      If you choose to disable the test, it must be disabled both at the hub and at the SBus card. In the event of "loss of carrier" or "not responding" problems, check the status of the link enable on both the SBus card and the hub.

      Figure 4-15 DSBE/S SBus Card

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      Figure 4-16 FSBE/S SBus Card

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      Figure 4-17 Disabling and Enabling the Link Integrity Test

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Installation

  1. Use the procedures in "Removing a Board" to remove the applicable SBus+ or Graphics+ I/O board.

  2. Locate the SBus connector that the card is to be installed in.

    See Figure 4-9 or Figure 4-10.

  3. If a filler panel covers the front panel SBus slot, remove the two screws and detach the filler panel.

    Retain the screws to attach the SBus card to the back panel, unless the card has a wide connector, or set of connectors.

  4. Unlock the tip inserts of the two standoffs for the SBus slot. See Figure 4-11.

  5. Attach a wrist strap and take the SBus card out of the protective packaging. Inspect the pins in the connector to make sure they are not bent.

  6. Guide the SBus card face plate under the springfinger and against the rear face of the I/O+ board front panel.

    The I/O connectors of the SBus card should be visible through the opening in the I/O+ board front panel.

  7. Hold the card by the edges nearest the SBus connector and place the card over the two standoffs.

  8. Hold the SBus card by the edges near the connector and firmly but gently press the card down until the connector is fully seated.

    To align the connector and socket, push the card toward the I/O+ board front panel.

    Caution - Caution -

    Do not rock the card onto the socket; the plastic connector housing may break.

  9. Press each corner of the SBus card to ensure that it rests on the collar of the standoff.

  10. Press down on the tip insert of each standoff to lock the card in place.

  11. Replace and tighten the back panel screws to secure the SBus card to the I/O+ board front panel.

  12. Replace the I/O+ board using the procedures described in "Installing a Board".