To guide an operator so that a recovery from a fault can be made speedily and accurately without any instruction manual.

This device is equipped with a fault detection part 8 which detects a fault occurring to a terminal device 5 and outputs an error code corresponding to the fault, a recovery procedure information processing part 1 which retrieves recovery procedure information on the fault according to the error code outputted from the fault detection part 8, and a display part 2 which displays the recovery procedure information retrieved by the recovery procedure information processing part 1. Further, the recovery procedure information processing part 1 is provided successively with a procedure video storage part 7 which stores video of the recovery procedure for the fault as recovery procedure information. Further, the recovery procedure information processing part 1 has a recovery procedure video display control function which performs display control over the video of the recovery procedure stored in the procedure video storage part according to an externally inputted display command.