Maintenance portable terminal and control method therefor

A portable terminal that provides maintenance information to a maintenance server that manages the maintenance information, comprising:

• a port, an external recording medium being connected to the port, the maintenance information being recorded in the external recording medium;
• a communication device that uses a communication line of a different type to communicate with the maintenance server;
• and
• a processor configured to
• acquire the maintenance information from the recording medium,
• acquire, from the maintenance server via the communication device, determination information for determining a transmission priority of the maintenance information, and
• determine, on a basis of a type of a communication line that can be used by the communication device and the acquired determination information, whether to transmit the acquired maintenance information, wherein
• the determination information includes rank information indicating a transmission priority defined for the maintenance information,
• the maintenance information includes information for each of a plurality of categories, the category includes a plurality of items, and the rank information indicates a transmission priority defined for information for each of the plurality of items of the maintenance information, and
• the processor determines, on a basis of the type of the communication line that can be used by the communication device and the rank information, whether to transmit the maintenance information for each of the plurality of items of the maintenance information.