COLLECTION SYSTEM FOR FAULT INFORMATION

PURPOSE:To reduce a log file quantity of fault information registered on the occurrence of a fault. CONSTITUTION:A log information collection means 200 of a maintenance diagnostic device 10 stores fault information in a storage section 250 when fault information of an equipment having the fault among main body equipments 1-7 is collected. An analysis means 400 analyzes fault information based on the stored fault information. The required information is discriminated to store the fault information in a log information storage means 300 based on the result of analysis. An analysis means 1400 analyzes fault information based on the stored fault information. When the required information discriminated from the analysis result is not in existence in the storage section 1250, the fault information of the faulty equipment is read through a read section 1500 and the fault information is stored in a log information storage means 1300.