How to do maintenance work for professional audio?

　　1. The normal temperature of audio equipment should be 8 ℃ ~ 45 ℃. If the temperature is too low, the sensitivity of some machines (such as electronic tube machines) will be reduced; if the temperature is too high, it will easily burn out the components or cause the components to age prematurely. In summer, special attention should be paid to cooling down and maintaining air circulation.

　　2. Audio equipment should not be exposed to direct sunlight, and should also be kept away from heat sources, such as heaters.

　　3. After the audio equipment is used up, the function keys should be reset. If the function key is not reset for a long time, its pulling button spring will be under force for a long time, which will easily cause malfunction.

　　4. Before turning on and off the audio power supply, turn the volume potentiometer of the power amplifier to the minimum, which is the most effective protection method for the power amplifier and speakers. At this time, the power amplification of the power amplifier is almost zero, at least in the case of misoperation, it will not cause harm to the speaker.

　　5. Turn on from front to back when starting up, that is, turn on the CD player first, then turn on the front and rear stages, and turn the volume potentiometer of the power amplifier to the minimum when turning on. When shutting down, turn off the power amplifier first, so that the amplification function of the power amplifier is completely turned off. At this time, when you turn off the front-end equipment, no matter how large the inrush current is, the power amplifier and speakers will not be affected. Also, turn the volume potentiometer of the power amplifier to the minimum when turning off the face, and it can be connected to the CD player before turning it off or after turning it off.

　　6. The machine should be used frequently. Commonly used, it can prolong the life of the machine, such as some parts with motors (recording seat, CD player, laser disc player, etc.). If it is not rotated for a long time, some parts will be deformed.

　　7. To power on regularly. In the case of long-term non-use, especially in humid and high temperature seasons, it is best to turn on the power for half an hour every day. In this way, the heat generated by the components inside the machine can be used to drive off moisture and prevent the internal coils, speaker voice coils, transformers, etc. from being damp and moldy.

　　8. Wipe the surface of the machine with a clean and damp soft cotton cloth every once in a while; when not in use, cover the machine with a dust cover or cover to prevent dust from entering.

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