PROBLEM TO BE SOLVED: To easily select a service person to be dispatched. SOLUTION: Error information of a printing device, estimated required time information for each serviceman related to an estimated required time until a serviceman performs maintenance work of a printing device in which an error has occurred, skill information for each serviceman, and a service. A trained model that is machine-learned using teacher data that associates at least one serviceman selection information out of the possessed parts information for each man with a serviceman dispatched to maintain the printing device in which an error has occurred. When an error occurs in the storage unit and the printing device, the serviceman selection information is acquired, and the acquired serviceman selection information and the learned model are used to maintain the printing device in which the error has occurred. A serviceman selection device including a control unit for selecting a serviceman to be dispatched for the purpose is configured. [Selection diagram] Fig. 1
展开▼