As a series of new
Used Electric Car that appear in the market and are suitable for special places, Used
Electric Car provide greater convenience for our daily lives. Because it is an electric special vehicle, there are many kinds of faults and varied phenomena during use. Fault judgment skills are the key to quickly and accurately repairing the vehicle. The so-called fault judgment skills are a set of logical ideas for finding faults and the order of inspection methods formed in the mind of the maintenance person based on the fault phenomenon.
1. Clean first and then test
As for Used Electric Car, many circuit faults are caused by the working environment, such as dust on the charger controller circuit board and various soft faults caused by dirty adjustable potentiometers. Accordingly, when checking for faults, you should first clean the inside of the machine and eliminate the fault caused by contamination before proceeding to check.
2. Go outside the machine first, then inside the machine
Specific internal faults of Used Electric Car are all external manifestations. Different external manifestations reflect corresponding internal device faults. When diagnosing and inspecting faults, start from outside the machine and gradually go deep inside. This can not only avoid blindness, reduce unnecessary losses, but also greatly improve maintenance. s efficiency.
3. Power supply first and then load
Faults in the power supply part of Used Electric Car account for a large proportion in maintenance. The power supply system is the center of energy supply for the whole machine. The power supply supplies electric energy and the load pump electric energy, and relies on electric energy to work. Most faults of the load are often caused by the failure of its power supply. Caused by smooth flow.
Therefore, when checking for faults, you should first check the power circuit and confirm that there is no abnormality in the power supply before repairing other circuits.
4. Static first, then dynamic. Static means that the
Used Car is in a de-energized state, that is, it is checked first when the power supply is cut off. For example, if all the connecting wires are correct, if all sockets are in good contact, if there are any broken wires and poor welding on the machine, the unit
Check whether the parts are burnt black or discolored. Dynamic means that the machine to be repaired is in a working state with power on. Dynamic inspection must be carried out after necessary inspections and measurements during the static state. Power must not be blindly turned on to avoid expanding the fault.
