Verizon FiOS TV, Service Manual

7

BBU Audible Alarms:

Both BBU models are equipped with an audible alarm to inform you of 

problems with your BBU. The alarm sounds for two seconds and then is

silent for 58 seconds. The conditions listed below are the potential reasons

for the audible alarm. You can use the alarm in combination with the 

indicator lights to troubleshoot your BBU issue.

Low Battery

— Alarm is silenced if the battery voltage goes above 12V

(electrical power has returned), the battery is fully discharged or the battery

is removed from the BBU.

Foreign Voltage

— Alarm is silenced once the foreign voltage has been

properly removed.

Replace Battery

— Alarm is silenced when the battery is removed.

Overcurrent

— Alarm is silenced once the overcurrent has been 

properly removed.

Since you are responsible for the management of your battery, it is very

important that you familiarize yourself with the light signals and audible

alarms to ensure that you have backup power if it’s needed.

Please note: During a power outage, only your telephone service will receive power. Your backup

battery will not operate your Internet or video services or your router.

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