| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily specify a defective part based on the monitor information of a device. <P>SOLUTION: When any error code or warning code is generated, a frequency deriving part 152 registers a category number corresponding to the code as a failure candidate in a management table 166. The number of prints printed by a printer 300 from the release of the previous failure candidate registration until that point of time and the frequency of the generation of the error code or warning code from the release of the registration until that point of time are calculated, and the number of print per one error frequency is calculated. As for a certain category number, when the number of prints per one error frequency is a threshold or less, a diagnosing part 154 diagnoses that failure has been generated in a part corresponding to the category number, and specifies the part as the defective part, and issues warning. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
