OmniSistem Beta 3 – UA880 - Manual (Page 19)

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Please follow the steps during using the equipment
1> Start
a Setup thef unction a nd c onnection a ccording t o t he a bove f unctions etup a nd
connecting;
b
Check if the output cable is short circuit and the load is too low;
c Check if the local voltage complies with the user's manual;
d Be sure the switch of power supply at "0" and the volume is the lowest;
e Connect the power supply, turn on the equipment of sound source, pre and effect
equipment and assure these equipments work in order;
f
Turn on the switch of power supply(put it at"1"position);
g Adjust the knob of volume clockwise to right position.
2> Off
a Adjust the knob of volume unti-clockwise to the lowest;
b Turn off the switch of power supply on the front panel(put it at "0"position);
c Turn off the pre and effect equipments, sound source equipments;
1>If signal indicator flashes, it means if there is signal output in two channels;
2>If peak indicator flashes, it means that the input voltage is too high. You should turn
down the volume;
3>If the peak indicator always lights,it means faults.The reason is like this: loading is too
low,short on loading,temperature is too high.You should check it after power off. Turn
on again if no abnormity;
4>If bridge indicator lights, it means the amplifier is under the bridged mode.
Perfect protection function can prevent the damage for amplifier and speaker caused by
short circuit and output DC and overheat.
1>Short circuit protection: when the load at the output end is short circuit, the equipment
can cut off the signal and protect the equipment;
2>Output DC protection: when the equipment has faults and there is DC in output signal,
the equipment can cut off output automatically and avoid damage for speaker caused
by DC;
3>Overheat protection: If the temperature of heat sink is over the allowed temperature,
the sensor will cut off the output , avoid damage caused by high temperature and
protect the a
mplifier.
OPERATIONS
INDICATORS ON FRONT PANEL
PROTECTION FUNCTION