Maintenance method of electronic scale
2024-07-02 11:06:18
The maintenance personnel must have certain knowledge of electronic technology and digital circuits, fully understand the basic working principle and performance of electronic scales, and be proficient in the operation of electronic scales. Before starting maintenance, the maintenance personnel must first understand the fault phenomena and usage, such as: site conditions, environmental conditions, whether there is overweight, whether the scale body and the instrument have collisions, trauma, fault phenomena and occurrence time, etc. The purpose of some visual inspections is to shorten the maintenance time. Generally, according to the fault phenomenon, you can use the methods of listening, sniffing, looking, touching, and key operation during maintenance to make the electronic scale work in a live state and check it according to normal use. Listen: whether the scale has abnormal noise, whether there is alarm sound, whether the sound is regular; sniff: whether the electronic scale has abnormal smell, such as transformer, lead, component, printed board, etc. due to circuit heating, burnout, etc., There may be a big odor; see: the display shows the status, whether there is a prompt, whether the appearance is damaged. Whether the connecting parts are reliable; whether the functions of operating the electronic scale are normal, whether the keys are flexible and effective; remove the cover, touch the integrated circuit and components, feel the temperature is too high, and can directly replace the suspicious devices with good devices. The fault of excessive current of the whole machine is particularly effective. The instrument inspection is based on the above inspection, narrowing the inspection scope, using the instrument to detect the voltage and current of the fault location, and analyzing and judging to find the fault point or the damaged device. Note: When the signal of the instrument and the scale body is not connected, it is normal to turn on the power to check the instrument. Some functions do not work. It is normal to pay attention to this situation and do not misjudge the function of the key.
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