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How is the public address system used and maintained?


01. Pay attention to the operating conditions of the machine, especially the following precautions
Avoid using the machine in extremely low or extremely high temperature environments and avoid direct sunlight on the surface of the machine.
Avoid using the machine in damp environments to prevent premature failure of internal components or premature rusting of the machine.
Before use, it is necessary to confirm that the local power supply voltage matches the machine.
02. Pay attention to the operating environment of the machine
Avoid using the machine in dust and vibration environments.
There should be sufficient clearance around the machine to facilitate heat dissipation.
For power amplifiers, special attention should be paid to maintaining smooth heat dissipation channels
03. Precautions during machine use:
During use, attention should be paid to the sequence of turning on and off. When starting up, the front-end equipment such as the audio source should be turned on first, and then the power amplifier should be turned on; When shutting down, the power amplifier should be turned off first, and then the front-end equipment such as the sound source should be turned off. If the audio equipment has a volume knob, it is best to turn the volume knob to the lowest position before turning it on or off. The purpose of doing so is to reduce the impact on the speaker during startup and shutdown.
It is strictly prohibited to unplug or plug in signal plugs with power. To avoid damage to the machine or speaker due to the electrical shock caused by this.
If any abnormalities occur during the operation of the machine, the power should be immediately turned off and the machine should be stopped from use; If the operator does not understand maintenance techniques, do not open the machine without authorization to avoid causing greater damage to the machine or causing electric shock accidents.
04. Pay attention to machine maintenance:
Do not use volatile solutions to clean the machine, such as wiping the surface with gasoline, alcohol, etc. Use a soft cloth to wipe the dust. And when cleaning the machine casing, it is necessary to first unplug the power supply.
Machines are generally not waterproof. In case they get wet, they must wait for the water to dry thoroughly before starting up and working.
05. Safe use of the machine:
Do not pull or plug in the power plug with wet hands to avoid electric shock.
When not in use for a long time, please unplug the power plug from the power socket.
Do not let metal conductive substances such as iron needles, hair clips, coins fall into the machine to avoid damaging it.
When replacing the fuse of the machine, it should be strictly replaced according to the requirements, and it is strictly prohibited to use substitutes that do not meet the requirements.
When the machine is in use, the casing grounding point should be securely grounded.
The machine is strictly prohibited from operating under overload or short circuit conditions.
There is an auxiliary power socket on the back panel of the power amplifier. Do not connect electric appliances such as hair dryers or irons through it. It can only be used to connect audio equipment.
In a constant voltage power amplifier, its output terminal will have a higher output voltage, and the output terminal lead is generally longer. Therefore, in use, it is necessary to ensure the safety and reliability of the output terminal lead.
06. Pay attention to the protection of the power cord:
Be careful to avoid stepping on the power cord and being squeezed by heavy objects.
Do not pull, insert, or forcefully twist the power cord.
When pulling out the plug from the socket, it should be grabbed and pulled out.
Precautions for daily use of the broadcasting system: Each paging terminal should turn off the paging function after paging is completed. Otherwise, it will affect other broadcast functions.
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