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Removal and replacement procedures 65
SAS backplane
To remove the component:
1. Power down the server (on page 26).
2. Extend the server from the rack (on page 26).
3. Remove the access panel (on page 28).
4. Remove all hard drives ("SAS/SATA hard drive" on page 30).
5. Disconnect all cables from the SAS backplane.
6. Release the locking latch.
7. Remove the SAS backplane.
To replace the component, reverse the removal procedure.
Power supply backplane
WARNING: Only authorized technicians trained by HP should attempt to replace the power
supply backplane.
To remove the component:
1. Power down the server (on page 26).
2. Extend the server from the rack (on page 26).
3. Remove the access panel (on page 28).
4. Remove all power supplies ("Hot-plug power supply" on page 47).
5. Remove the SPI board (on page 30).
6. Disconnect all cables from the power supply backplane.
7. Slide the plastic retainer to the rear of the server.