Diagnostic tools 67
IMPORTANT: Reboot the server after completing each numbered step. If the error condition
continues, proceed with the next step.
1. 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 (on page 48)
o Processors (on page 36), 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 ("PPM" on page 41), except the PPM installed in slot 1
o DIMMs (on page 42), except the first bank
o Hard drives ("SAS or SATA hard drives" on page 44)
o Peripheral devices
2. Install each remaining system component, rebooting between each installation to isolate any failed
components.
3. Clear the system NVRAM ("System maintenance switch (SW3)" on page 76).
4. 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
58).
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