IBM 8239 Token-Ring Stackable Hub, Setup And User Manual

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Chapter 3. Installing Features
16-Port Expansion Feature
To install or remove a 16-Port Expansion Feature, follow the directions in this
section. The 16-Port Expansion Feature is hot pluggable, so you do not need to
disconnect the 8239 power cord.
Figure 3-1. 16-Port Expansion Feature
Removing a 16-Port Expansion Feature
1. If you intend to replace the 16-Port Expansion Feature, label the cables
attached to it to ensure that you reconnect the cables correctly.
2. Disconnect the cables from the 16-Port Expansion Feature.
3. Loosen the two thumbscrews by turning them counterclockwise until the screws
are loose enough to remove the card from the 8239.
4. Remove the 16-Port Expansion Feature from the 8239 by pulling on the thumb
screws.
5. If you are not replacing the 16-Port Expansion Feature immediately, install an
expansion slot cover.
Installing a 16-Port Expansion Feature
Perform these steps to install a 16-Port Expansion Feature:
1. If a 16-Port Expansion Feature was not already installed in this 8239, remove
the slot cover and store it in a safe place.
2. Slide the 16-Port Expansion Feature along the grooves in the slot until it is
seated and flush with the front panel.
3. Tighten the thumbscrews by turning them clockwise.
4. After the adapter is seated, all of the yellow port LEDs are on briefly, indicating
that diagnostic tests are in progress.
5. The diagnostic tests for the 16-Port Expansion Feature will complete in less
than 5 seconds.
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Copyright IBM Corp. 1998
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