ADC Telecommunications Inc. F0684-112 사용자 설명서

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8-3

D-x620616-0-20 Rev F

CONFIDENTIAL

Replacing a Fusion Wideband Expansion Hub

8.2

Replacing a Fusion Wideband Expansion Hub

Turn off the power to the Expansion Hub.

Disconnect all CATV cables, both fiber cables, and the AC power cord.

Replace the Expansion Hub with a new one.

Connect the AC power cord, all CATV cables, and both fiber cables – remember-
ing to clean and correctly connect the uplink and downlink fiber.

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.