Diagnostic tools 75
o PPMs ("Removing a PPM" on page 37), except the PPM installed in slot 1
o DIMMs ("Removing DIMMs" on page 68), except the first bank
o Hard drives ("Removing a hot-plug SAS hard drive" on page 54)
o Peripheral devices
3. Reseat the remaining memory boards, rebooting after each installation to isolate any failed memory
boards, if applicable.
4. Replace the DIMMs with a remaining bank of memory.
5. Replace the memory board, if applicable.
6. Replace the system board.
IMPORTANT: If replacing the system board or clearing NVRAM, you must re-enter the server
serial number through RBSU ("Re-entering the server serial number and product ID" on page
48).
Expansion board-related port 85 codes
Expansion board-related port 85 codes display in the format 6xh.
IMPORTANT: Reboot the server after completing each numbered step. If the error condition
continues, proceed with the next step.
To troubleshoot expansion board-related error codes:
1. Reseat all expansion boards.
2. Bring the server to base configuration by removing all components that are not required by the
server to complete POST. This process can include removing all:
o Expansion boards ("Removing a non-hot-plug expansion board" on page 41, "Removing a PCI-X
Hot Plug expansion board" on page 42)
o Processors ("Removing a processor or processor blank" on page 34), except the processor
installed in socket 1
IMPORTANT: Processor socket 1 and PPM slot 1 must be populated at all times or the server
does not function properly.
o PPMs ("Removing a PPM" on page 37), except the PPM installed in slot 1
o DIMMs ("Removing DIMMs" on page 68), except the first bank
o Hard drives ("Removing a hot-plug SAS hard drive" on page 54)
o Peripheral devices
3. Install the expansion boards one at a time, rebooting between each installation to isolate the failed
expansion board.
4. Replace the failed expansion board, if applicable.
5. Replace the PCI riser board, if applicable.
6. Replace the system board.
IMPORTANT: If replacing the system board or clearing NVRAM, you must re-enter the server
serial number through RBSU ("Re-entering the server serial number and product ID" on page
48).
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