User Manual

AS4000 Operations and Maintenance

Section

605-0000-431

. Issue 1.6. Date3/2/99

DLP-005

Page 11 of 44 © Copyright Airspan Communications Corporation 1999

ANALOGUE UNIT (AU) ALARMS

Alarm Indications

AS8100 (Sitespan) : a) ‘AnalogueCard: FRU Fail’

b) ‘AnalogueCard: PSU Fail’

Note: Sitespan views the RF and Analogue cards as one object , the

LED indication will show which of the cards has failed.

Rack: Major/Prompt

Modem Shelf Alarm Panel: Fault Alarm

Card Alarm: AU Fail

When the AU card fails, the SC will send ‘FRU failure’ messages to

the Sitespan to indicate each of its shelf elements is failing to

respond. In this situation, the engineer can assume the AU has failed

(it is very unlikely that these messages will occur together).

Probable Cause

a) Card Fail

b) AU PSU Fail

Note: If both the amber and red LEDs are lit then it is probable that

the RF Card has failed.

Consequences

a) Card Fail: Failure of service for all subscribers.

b) AU PSU Fail: None as Shelf Controller PSU provides back-up power supply.

Note: The Analogue Card is not ‘hot plugable’ and after replacing it the modem shelf will

need to be power cycled by disconnecting and re-connecting power to the shelf.

AU Fail

Red

Amber

Power OK