Display Apparatus and Display Method That Display Guidance Video

A display apparatus comprising:

• a display;
• a display controller that causes the display to continuously display a guidance video in a process sequence when a maintenance work of one's own device is performed, the guidance video indicating a specified work procedure of respective processes in the maintenance work;
• a sensor that detects operation states of respective members of the one's own device;
• and
• a work identifying unit that identifies a work performed by an operator based on a detection result of the sensor;
• wherein
• the display controller analyzes a work procedure that has been actually performed by the operator from a time series of the respective works identified by the work identifying unit, compares the analyzed work procedure with the process sequence and the specified work procedure, and returns to the process including an unprocessed work that has not been performed in accordance with the process sequence and the specified work procedure to cause the display to redisplay the guidance video indicating the work procedure of the returned process when having determined that the work performed by the operator is not performed in accordance with the process sequence and the specified work procedure.