Servicing The Motherboard; Remove The Motherboard - Oracle SPARC T8-2 Service Manual

Servicing the Motherboard

The motherboard includes two CMP modules, two MR I/O modules, memory control
subsystems, host ID/MAC addresses, and all SPM (Oracle ILOM) logic. The host ID and all
MAC addresses reside on a removable SCC PROM. Oracle ILOM system configuration data
resides on the service processor module (SPM).
The motherboard also hosts the PS backplane, which distributes main 12V power from
the power supplies to the rest of the server. The PS backplane is connected directly to the
motherboard through a bus bar and ribbon cable, and includes a top cover safety interlock
switch.
These topics describe how to service the motherboard.
"Remove the Motherboard" on page 147
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"Install the Motherboard" on page 151
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"Reactivate RAID Volumes" on page 155
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"Verify the Motherboard" on page 158
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Related Information
"Component Service Categories" on page 48
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"Servicing the SPM" on page 129
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Remove the Motherboard

This is a cold-service procedure that must be performed by qualified service personnel. Power
down the server completely before performing this procedure.
Ensure that all power is removed from the server before removing or installing
Caution -
the motherboard assembly. You must disconnect the power cables from the server before
performing these procedures.
Servicing the Motherboard 147