Oracle Fujitsu SPARC M12-1 Service Manual page 118

Figure 7-6 System-Stopped/Cold Replacement Flow
1. Opening the rack door
2. Switching the mode switch on the operation
panel to Service mode
3. Checking the operating condition of the
system and the I/O device usage status
4. Stopping the system
5. Removing the power cords
6. Replacing a faulty FRU
7. Installing the power cords
8. Restoring the system after replacing the MBU
or PSUBP
9. Performing a diagnosis test
10. Confirming that there is no problem with the
11. Returning the mode switch on the operation
12. Starting the system
13. Closing the rack door
104 Fujitsu SPARC M12-1 Service Manual • January 2023
replacement FRU
panel to Locked mode
Maintenance complete