User's Manual

1027145–0001 Revision D Installing indoor hub equipment 6–31Hub installation
2. Wrap the ESD strap snugly around your wrist and connect
the alligator clip to one of the ground terminals on the front
of the IDU chassis power supply.
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3. Remove the SSI from its ESD protective packaging.
Retain the packaging in case it is necessary to return the
SSI for repair.
4. Slide the SSI into the guides on each side of the chassis SSI
slot and push it firmly into place until the front of the SSI is
flush with the front of the IDU chassis.
5. Tighten the thumbscrews at each end of the SSI.
To tighten the thumbscrews, push them toward the IDU
chassis and turn them clockwise. To fully tighten the
thumbscrews, use a Phillips screwdriver.
6. Repeat steps 1 through 5 for each SSI.
7. If any SSI slots are empty, cover the slot with a blank panel.
(If you need additional blank panels, order HNS part
1026730–0001.)
8. Power on the IDU.
This completes the IDU installation.
The LEDs on the SSI front panels (all types) indicate the
following:
• Green – SSI startup and normal operation
• Red – Failure
• Flashing red – TDM bus communication failure
SSI LED indications