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1. Observe the meter to show the rate of digital transitions. Predict the location of the fault. Connect the appropriate sensor simulator to the meter or use the same meter to connect to the main line plug. Determine if the meter has any problems. 
2. Open the terminal box and use the digital multimeter's DC millivolt file to check if the output signal of the sensor is stable. If it is not stable, the sensors can be separated and tested separately. If there is no multimeter, then each of them is separately connected to the terminal board, and the instrument is observed until the instrument fails, and the judgment can be made and replaced.
3. The wiring board on the junction box, with a single sensor, not directly connected to the main line through the wiring board, observe whether the meter is normal, and check whether the terminal part of the wiring is oxidized and loose and whether each multi-turn resistor rotates several turns. The other resistance changes as well.
Xiao Bian provides these possible reasons, I hope that maintenance personnel can pay attention to the smooth solution to the problem of digital jumpers in electronic scales.
Electronic scales encounter hops! How to repair it?
There are many kinds of failures in electronic platform scales, such as crashes, inaccurate weighings, and digital jumps. Among them, digital jumps are more difficult problems encountered by maintenance personnel during work. Xiao Bian today introduced the relevant maintenance methods for everyone.