| 摘要 |
PROBLEM TO BE SOLVED: To execute only a microdiagnostic program corresponding to a board newly mounted for exchange regardlessly of the mounting order of a CPU mounting board and a CPU non-mounting board when exchanging plural fault boards including the CPU mounting board and CPU non-mounting board when any fault is generated at a reserve system device. SOLUTION: When any fault is detected at a reserve system device 110 on standby and the board generating the fault is exchanged with an auxiliary board for maintenance while an active system device 111 is operated, an other system board mount detection part 71 of the active system device 111 detects the mount conditions of a CPU non-mounting board 100 at the reserve system device 110. A present system board mount detection result read part 60 of the reserve system device 110 reads the detection result of mount condition of the CPU non-mounting board 100 at the reserve system device 110 detected by the other system board mount detecting part 71 of the active system device 111 from the other system board mount detection part 71 of the active system device 111. |
