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