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Removal and replacement procedures 69
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 27).
3. Remove the access panel (on page 28).
4. Remove all power supplies ("Hot-plug power supply" on page 51).
5. Remove the SPI board (on page 31).
6. Disconnect all cables from the power supply backplane.
7. Slide the plastic retainer to the rear of the server.
8. Remove the backplane.
To replace the component, reverse the removal procedure.
HP Trusted Platform Module
The TPM is not a customer-removable part.
CAUTION: Any attempt to remove an installed TPM from the system board breaks or
disfigures the TPM security rivet. Upon locating a broken or disfigured rivet on an installed
TPM, administrators should consider the system compromised and take appropriate measures
to ensure the integrity of the system data.
If you suspect a TPM board failure, leave the TPM installed and remove the system board ("System board"
on page 66). Contact an HP authorized service provider for a replacement system board and TPM board.