3. Lower the handle, and then remove the component from the server.
CAUTION: Do not replace either the SPI board, main I/O board, upper CPU board, lower
CPU board or XNC boards with new components at the same time.
CAUTION: If replacing this component with a new part, all component firmware must be
updated (“Flashing firmware using Smart Components” (page 77)) before replacing any other
component.
CAUTION: XNC cabling (“XNC cabling” (page 102)) is required for eight processor systems.
Failure to cable the XNC will result in the lower processor memory drawer not being recognized
by the server.
To replace the component, reverse the removal procedure.
System board
WARNING! The server weighs approximately 72.6 kg–93 kg (160 lb–205 lb). To reduce the
risk of injury due to the weight of the server, remove the following components before removing
the server from the rack:
• Processor memory module
• Hard drives
• Power supplies
The server weighs 21.8 kg (48 lb) with these components removed and might require two
people to remove the server from the rack.
CAUTION: Before starting this procedure, read the information about protecting against
electrostatic discharge (“Preventing electrostatic discharge” (page 21)).
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.
68 Removal and replacement procedures
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