How to become a maintenance electronic crane scale master - Huaqiang Electronic Network

Electronic scale crystal oscillator 3.2*2.5mm 3225 16M (16.000MHZ) 12PF 10PPM 20PPM 30PPM

Brand AVX TPSE226M035R0125 Low impedance tantalum capacitor AVX 22

One-piece inductor

With the development of technology, our

Also changing with each passing day, but in general, our

Electronic crane scale

Sometimes there will be a malfunction, but it is troublesome and delayed to send it back to the factory. In a few days, Xiaobian will give you benefits and teach you how to become a maintenance electronic crane scale master!

(1) Short-circuit and open-circuit method The short-circuit method is to short-circuit a certain part of the circuit, and the electronic crane scale then judges the fault point by the result of the oscilloscope or multimeter test. The open circuit method is to disconnect a certain part of the circuit, and then use a multimeter to measure the resistance, voltage or current to judge the fault point.

(2) Intuitive method There are many components on the main circuit board of the electronic crane scale. Many faults occur due to short circuit, open circuit, poor contact and plugging, and the corners of the component pipe are welded. Therefore, when the pricing scale fails, you should first check the circuit board with an intuitive feeling: view, listen, smell, touch, etc.

(III) Voltage measurement method The electronic crane scale compares the working voltage of each circuit corner of the circuit component and the chip with the normal value, and the place where the voltage changes greatly is the place where the fault is located.

(4) Comparison and substitution method In the case of fault inspection, the electronic crane scale is compared with the faulty scale by means of the meter, and the fault point can be detected quickly. In addition, sensors, circuit boards, power supplies, keyboards, etc., which are prepared at work, are suspected to be damaged by sensors, circuit boards, power supplies, keyboards, etc., replaced with spare parts, and then observe whether the results have changed. Normal, it indicates that there is a problem with the original component. Comparison and substitution methods can quickly and accurately determine the point of failure.