User's Manual

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620003-0 Rev. A
PRELIMINARY Replacing an Expansion Hub
9.2 Replacing an Expansion Hub
Replacing an Expansion Hub
1. Turn off the power to the Expansion Hub.
2. Disconnect all Cat-5/6 cables, both fiber cables, and the AC power cord.
3. Replace the Expansion Hub with a new one.
4. Connect the AC power cord, all Cat-5/6 cables, and both fiber cables – remember-
ing to clean and correctly connect the uplink and downlink fiber.
5. Turn on the power to the Expansion Hub.
AdminManager Tasks
• The Main Hub automatically issues the band setting.
• When convenient, perform System Test to optimize performance.
During System Test, the entire system is temporarily off-line and no RF is
being transmitted. For a fully loaded system (one Main Hub, four Expansion
Hubs, and 32 RAUs), it can take 1.5 minutes to complete the test.
Checking the Expansion Hub’s LEDs
• The LEDs should blink through all states on power up.
• If the LEDs do not blink on power up, replace the Expansion Hub.
• If the LEDs do not illuminate at all, make sure the AC power cable is con-
nected.
•The
UL STATUS and DL STATUS LEDs should be green.
•The
E-HUB STATUS and POWER LEDs should be green.
• For each RJ-45 port that has an RAU connected:
•The
E-HUB/RAU LEDs should be green.
•The
LINK LEDs should be green.
It can take several seconds for each Cat-5/6 connection for the LEDs to display
properly.
NOTE: Refer to Section 10 for troubleshooting using the LEDs.