Indications at the micro-DAU
4188-781 issue 6_Part 2_ 08/10_micro DAU commission
5
micro Distributed Amplifier Unit
Commissioning information
When using the remote control on a
micro-DAU the indications given by
these LEDs will be different, see
instructions for the Remote control.
Audio Status
Circuit B fault
Circuit A fault
Audio loop circuit
Device loop circuit (analogue loop)
Audio Status
Circuit B fault
Circuit A fault
Audio Status
Circuit B fault
Circuit A fault
green
LED
yellow
LED
yellow
LED
x2
- 2 flashes (single occurrence)
blink
- 1 blink (quick flash) every 1s
- steady On
LED Keys
- Off
It may be possible to recover
from these faults by calibrating
the speaker circuits, see
'How to calibrate speaker
circuits'.
fast
- 8 quick flashes (blinks) every 1s
slow
- 1 slow flash
(every 0.5s - On 0.5s Off) every 1s
Amplifiers
and
S
peaker
circuit
s
healthy
CAL
micro-DAU PCB
Press the CAL button on micro-DAU PCB
to recover from Amplifier fault.
If the amplifier is still faulty then these
indications will reappear.
Fault on Speaker Circuit B
slow
No Power to micro-DAU
Quiescent
blink
micro-DAU in Fall back mode
fast
During Speaker calibration
x2
Audio On
Fault on Speaker Circuit A
slow
Wiring Short or Open circuit
on Speaker Circuit A
Wiring Short or Open circuit
on Speaker Circuit B
Amplifier A fault
blink
Amplifier B fault
blink
fast
fast
fast
Audio and Device loop circuits
disconnected. For example
when the micro-DAU is
discharging the stored energy.
CAL/
Fault
Reset
It may be possible to recover from an
Amplifier fault, the panel MUST NOT be in
'Test Mode' when attempting an Amplifier
fault recovery.
- Don’t care
-
