Oracle Fujitsu SPARC M12-1 Service Manual page 114

System-stopped/hot replacement (PSU and FANU)
System-stopped/hot replacement can be performed on a PSU and FANU. Perform the
following procedure to replace the unit.
Figure 7-4 System-Stopped/Hot Replacement Flow (PSU and FANU)
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
4. Stopping the system
5. Releasing a faulty FRU from the system
6. Replacing a faulty FRU
7. Incorporating the replacement FRU into the
system
8. Confirming that there is no problem with the
replacement FRU
9. Returning the mode switch on the operation
panel to Locked mode
10. Starting the system
11. Closing the rack door
100 Fujitsu SPARC M12-1 Service Manual • January 2023
Maintenance complete