Fujitsu M10-4 Service Manual page 164

Inactive/cold replacement (building block configuration only)
Inactive/cold replacement can be performed on each FRU in a building block
configuration. Perform the following procedure to replace the unit.
Figure 7-9 Inactive/cold replacement flow (building block configuration only)
1. Open rack door
2. Switch mode switch
3. Check operating condition of system and
I/O device usage status
4. Powering off chassis requiring maintenance
5. Release chassis requiring maintenance from
system
6. Enable access to FRU requiring maintenance
7. Replace faulty FRU
8. Restore chassis requiring maintenance
9. Incorporate chassis requiring maintenance
into system
10. Diagnose chassis requiring maintenance
11. Confirm that there is no problem with
12. Return mode switch to original mode
13. Power on chassis requiring maintenance
14. Close rack door
150 Fujitsu M10-4/Fujitsu M10-4S/SPARC M10-4/SPARC M10-4S Service Manual ･ June 2023
replacement FRU
Maintenance complete