Introduction: we all know what sound is, but do you know how to set it? In fact, it is essentially the body of sound, and it is the source of all kinds of volume expansion or reduction. The acoustic amplifier, commonly known as the acoustic emitter, is capable of magnifying weak signals in the sound source or amplifier to achieve the sound amplification effect of the speaker. If you have a high-quality acoustic system, it must be the best. Generally, there are three types of “specialized” “civilian” “specialized” machines。
Today, let's talk about the usual methods we use in machine maintenance。
I. Intuitive inspection。
Intuitive inspection adheres to the principle of simplicity and complexity, which begins with a broad examination of the machine by looking, listening, smelling, touching, then discovering the problems and resolving them. As can be seen, this method is the easiest and most effective way of dealing with simple and obvious failures. It generally applies to basic problems that can be easily identified and solved in external knobs, switches, connections, etc。
Ii. The universal scale measurement method。
In the course of the overhaul, if we have already identified the area where the malfunction occurred, we can use a universal meter to test the current voltage of the malfunctioning circuits and devices. There are generally three specific methods of implementation: voltage measurement, resistance measurement and current measurement. (a) the electro-voltage measure determines whether the problem is internal or external by checking the input voltage of the power and the working voltage of the various electronic components, depending on whether the resulting voltage is high or low; the resistance measure determines whether the circuit is open or short-circuited by calculating the direct current electrical resistance value in the element; the current measurement method is naturally the method of calculating the current values in the element, thus determining whether there is a problem. One of the basic and intuitive methods of trouble-shooting is universal metering。
Signal interference method。
The normal method of repairing audio simulation circuits is signal interference. We can direct human sensor signals or direct flow signals to the generator's output to a certain level of circuit, and then determine where the specific part of the malfunction is based on the sound of the back speaker. It is worth noting that the signal interference method is generally applied in cases where the direct current works normally but the amplifier is silent or small, it is generally tested on a level-by-level basis, and when examined with a human induction method, the minor reminder should be colluded with the appropriate capacitor to avoid an electrical accident。
Iv. Heating; substitution。
In the course of its use, it is sometimes the case that the machine fails after some time. At this point, we can heat up elements that are suspected to be malfunctioning, such as iron branded or wind blowers, and if they are unserviceable after heating and cooled back to normal, we can determine that what we need to replace is this part of the component。
Substitution refers to the method of solving problems by replacing suspected problematic electronic components with normal electronic components, which can be used interchangeably between different models but with the same performance parameters。
These are some of the common methods of repairing the machine, which are summarized below, and which are expected to help readers more or less。
