ProLiant ML570 Generation 4 Server Maintenance and Service Guide

Diagnostic tools 75
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 58), except the PPM installed in slot 1
o DIMMs ("Removing and installing a memory board (hot-plug)" on page 47, "Removing and
installing a memory board (non-hot-plug)" on page 50), except the first bank
o Hard drives ("Hot-plug hard drives" on page 36)
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.
Miscellaneous port 85 codes
To troubleshoot all other port 85 codes:
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 40)
o Processors ("Processor" on page 54), 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 58), except the PPM installed in slot 1
o DIMMs ("Removing and installing a memory board (hot-plug)" on page 47, "Removing and
installing a memory board (non-hot-plug)" on page 50), except the first bank
o Hard drives ("Hot-plug hard drives" on page 36)
o Peripheral devices
2. Install each remaining system component, rebooting between each installation to isolate any failed
components.
3. Clear the system NVRAM.
4. Replace the system board.
IMPORTANT: If replacing the system board or clearing NVRAM, you must re-enter the server
serial number through RBSU.