Instruction Manual

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D-x620TBD-0-20 Rev A CONFIDENTIAL
Replacing a Fusion Expansion Hub
8.2 Replacing a Fusion Expansion Hub
Replacing a Fusion Expansion Hub
1. Turn off the power to the Expansion Hub.
2. Disconnect all CATV 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 CATV 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.
AdminBrowser Tasks
• The Main Hub automatically issues the band setting.
• When convenient, use AdminBrowser to perform System Test in order 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 up to 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 CATV port that has an RAU connected the LEDs should be green.
It can take several seconds for each CATV connection for the LEDs to display
properly.
NOTE: Refer to Section 9 for troubleshooting using the LEDs.