1, wire connector inspection Wires that are not fastened to the joint will cause high temperature at the joint location and damage the teaching equipment. The poor joint will also affect the transmission of data; the connector on the display will be easier to loosen due to the angle of the moving display, so it is necessary to check the position of the connector and check it regularly. tight. 2, the circuit board Dust accumulation is difficult to dissipate heat, so it is regularly cleaned every month. Usually, the motor overload breaker is installed in the circuit. The limited current of the protection device is adjustable. It should be properly selected according to the rated power of the equipment, and once overloaded. When the protector is started, it should be determined whether the phase is not checked and the contact is bad.
3, headphones and keyboard In teaching, the use of digital language learning systems must use supporting equipment - headphones and keyboards. Generally speaking, these supporting devices are relatively easy to damage. The school's speech room is used in large quantities and frequently used, which is easy to cause damage, so it is necessary to maintain frequently. Check and replace damaged equipment in time to avoid affecting teaching. 4, computer control part With the development of science and technology, the normal operation of the microcomputer part and its related electronic boards puts high demands on the fluctuation of the power supply voltage, the temperature and humidity of the working environment, the shock resistance of the installation and the interference of the external high-frequency signals. The fan for keeping the ventilation and heat dissipation in the main box of the digital language learning system works normally, and the power supply device with high precision is used for power supply, and these problems should be solved and checked regularly.