User Guide

15
Fault Diagnosis LEDs
• Volume In LED 8 will stay red if there is a
fault with the staff micr ophone.
• Volume Out LED 8 will stay red if there is a
fault with the customer micr ophone.
• V olume In LED 8 will flash r ed if ther e is
a fault with the loop (i.e. a broken aerial).
T o r eturn the amplifier the f act ory def ault settings:
1. Unplug the po w er supply and then r econnect it.
2. Press the On/Off button and Volume In (-) button together, then
release
.
3. The Volume In LED bar will have all LEDs illuminated, while the V olume
Out LED bar will display the firmware revision number in a fixed
p att ern of LEDs. This indicat es that def ault settings hav e been
r est ored.
Factory Defaults