Removal and replacement procedures 44
4.
Remove the BBWC cache module from the controller.
5. Disconnect the cable from the cache module only if the battery pack is not being used to recover
data from the server or transfer data to another server.
CAUTION: Do not detach the cable that connects the battery pack to the cache module. Detaching the
cable causes any unsaved data in the cache module to be lost.
To replace the component, reverse the removal procedure.
Removing the system board
CAUTION: Only authorized technicians trained by HP should attempt to remove the system board. If you
believe the system board requires replacement, contact HP Technical Support before proceeding.
IMPORTANT: HP recommends troubleshooting the system using port 85 codes before replacing the system
board. Refer to "Troubleshooting the system using port 85 codes (on page 68)" for a list of codes and
troubleshooting procedures.
1. Power down the server (on page 27).
2. Extend or remove the server from the rack ("Extending the server from the rack" on page 26,
"Remove the server from the rack" on page 27).
3. Remove the access panel ("Removing the access panel" on page 28).
4. Remove all system fans ("Replacing hot-plug fans" on page 53).
5. Remove all expansion boards ("Removing a non-hot-plug expansion board" on page 38, "Removing
a PCI-X Hot Plug expansion board" on page 40).
6. Remove the expansion slot cover ("Removing the expansion slot cover" on page 38).
7. Remove the PCI-X Hot Plug basket ("Removing the PCI-X Hot Plug basket" on page 39), if installed.
8. Disconnect the cable from the PCI-X Hot Plug mezzanine board ("PCI-X Hot Plug mezzanine cabling"
on page 90).
9. Remove the system cage ("Removing the system cage" on page 29).
10. Unlock the latch and open the lever.
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