| 摘要 |
In an abnormality diagnosis system of the invention where multiple devices and a server S are interconnected via a network, a communication failure may occur between the server S and one device (diagnosis object printer P 1 ) among the multiple devices. On the occurrence of the communication failure, the server S instructs another device (diagnosis execution printer P 2 ) among the multiple devices other than the diagnosis object printer P 1 to make a diagnosis of abnormality in the diagnosis object printer P 1. In response to the instruction, the diagnosis execution printer P 2 obtains communication setting information from the diagnosis object printer P 1, and compares the obtained communication setting information with own communication setting information stored in the self printer or the diagnosis execution printer P 2. The diagnosis execution printer P 2 refers to a result of the comparison, makes diagnosis of the communication failure due to an error of the communication setting information set in the diagnosis object printer P 1, and informs the server S of a result of the diagnosis. This arrangement of the invention enables easy diagnosis of abnormality in the diagnosis object printer P 1 in the event of a communication failure between the diagnosis object printer P 1 and the server S.
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