1, check the scale body instrument part if there is abnormal sound, there is no alarm, alarm sound septal whether law.

2, the scale body or instrument abnormal odor, such as transformer, plastic wire, printing plate such as fever, burn out because the circuit may be issued abnormal smell great.

3, look at the display to display status, whether there are external injury, components have no fault, weld etc..

4, touch chip and electronic components, feel the temperature is too high, the substitution of suspicious components can directly use the device at a time, fault phenomenon on the big current method is particularly effective.

5, the operation of electronic hanging scale function is normal, the key is flexible, can be combined with the "listen" and "look" at the same time, can quickly narrow the search failure, for the next step to lay the foundation.