Characteristics And Protection; Diagnostics Table - dB Technologies DVA M2M Mode D'emploi

CHARACTERISTICS AND PROTECTION

Indications of operation model, malfunction, and safeties
The light indicators (LEDs) "READY", "MUTE/PROT", "SIGNAL" and "LIMIT" are also used to
indicate different modes of operation and different types of faults, by flashing sequences as
reported in the diagnostics table below.
The three types of failure are:
- WARNING: a non-severe error or auto-reset malfunction is detected and the performance of
the speaker is not limited
- LIMITATION: an error is detected and diffuser performance is limited. The sound level is
reduced or one or more amplifiers are disabled. This state partially influences the correct
functioning of the diffuser. If the problem persists the next time the module is turned on,
contact the support center for assistance.
- FAILURE: a severe malfunction is detected. The speaker switches to "mute".
If the case of a malfunction, before contacting the support center, try to turn the module off and on
to check if the problem still exists.
Cooling
The cooling of the amplifier on the speaker DVA M2M is realized by convection on internal heat
sinks without the aid of fans.
Thermal protection is ensured by an internal circuit which controls the temperature of the amplifier
and protects it from overheating by limiting the overall volume.
This intervention is marked by the flashing of a yellow indicator light "MUTE/PROT".
The correct volume and all the functions will be automatically restarted after normal operating
temperatures have been restored.
Protection
When the yellow "MUTE/PROT" LED turns on, it means that a malfunction has been detected on
the speaker, thus setting this to the mute position.
Perform the checks listed below:
- Check if the speaker is properly connected to the power supply.
- Make sure that the power supply is of correct voltage.
- Check that the amplifier is not overheated.
- Disconnect the speaker from the mains power supply, wait for a few minutes and connect
it again.
If after these tests the LED is still on, please contact an authorized service center.

DIAGNOSTICS TABLE

STATE OR
CONDITION OF THE "READY"
MODULE
Normal operation
Power ON OFF
Normal use ON
Partial fault ON
Total fault OFF
LED LED
"MUTE/PROT"
ON for 5 sec. OFF
OFF Normal
operation
Cycling Normal
flashing (quick operation
flashes)
ON OFF
LED LED
"SIGNAL" "LIMITER"
OFF
Normal
operation
Normal
operation
Cycling
flashing (quick
flashes)
ENGLISH
FUNCTIONS OR DESCRIPTION OF THE
MODULE
Audio MUTED
Initialization of the amplifier module
Audio ACTIVE
Module initialization complete and correct
Audio ACTIVE
The module has detected a partial anomaly
and remains active with limited functions
Audio MUTED
The module has detected a serious anomaly
and is in protected mode
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