active exchange / stop exchange , exchange failure / preventive replacement , replacement / expansion , such as a whole does not distinguish between remuneration I can do the job , to the repair guide that can be repaired without the operator O operation , maintenance, and display a plurality of parts that could be targets , maintenance and component selection screen display to select the part of the selection screen and a screen display unit for indicating the status determination unit , a maintenance work order according to the determined state is determined by the state determination unit configured to determine power status or condition of the equipment maintenance target parts selected in the display .
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