You must determine if the motherboard is faulty before you replace it.
-> show /System/Processors /System/Processors Targets: CPUs Properties: health = OK health_details = - ... ->
-> show /System/Processors/CPUs/CPU_x /System/Processor/CPUs/CPU_0 Targets: Properties: health = OK health_details = - ... ->
where x is the number of the CPU, either 0 or 1.
-> show /System/Networking /System/Networking Targets: Ethernet_NICs Properties: health = OK health_details = - ... ->
-> show /System/Networking/Ethernet_NICs/Ethernet_NIC_x /System/Networking/Ethernet_NICs/Ethernet_NIC_0 Targets: Properties: health = OK health_details = - ... ->
where x is the number of the interface, from 0 to 3.
For example, type:
-> show faulty Target | Property | Value --------------------+------------------------+------------------------------- /SP/faultmgmt/0 | fru | /SYS/MB ... ->
If the motherboard is faulty, you will see /SYS/MB, /SYS/MB/P0, or /SYS/MB/P1 under the Value heading.
See Identify Faulted Components.
Check the Fault class and Description fields for more information.
If the motherboard is faulty, replace it.
-> show /SYS/VPS value /SYS/VPS Properties: value = 159.175 Watts ->
If the power displayed is unreasonable or none at all, replace the motherboard. See Remove the Motherboard.