Fujitsu M10-4 Service Manual page 167

System-stopped/hot replacement (for a power supply unit or fan unit)
System-stopped/hot replacement can be performed on a power supply unit and a fan
unit. Perform the following procedure to replace the unit.
Figure 7-10 System-stopped/hot replacement flow (for a power supply unit or
fan unit)
1. Open rack door
2. Switch mode switch
3. Check operating condition of system
4. Stop system
5. Release faulty FRU from system
6. Remove front cover
7. Replace faulty FRU
8. Install front cover
9. Incorporate replacement FRU into system
10. Diagnose replacement FRU
11. Confirm that there is no problem with
replacement FRU
12. Return mode switch to original mode
13. Start system
14. Close rack door
Completion of maintenance
Chapter 7 Maintenance Flow 153