University laboratory equipment is highly professional, troubleshooting
and maintenance of equipment is difficult to rely on social solution. In the laboratory
construction, In addition to strong theoretical foundation and experimental skills,
teachers enhance the improvement of experimental maintenance skills in order to
reduce laboratory operating costs. This paper introduces repair ideas of the electron
beam measuring instrument, Hope to lay the groundwork for the next step to maintain
various types of oscilloscopes, computer CRT screens and TV tubes part of the circuit.