You must determine which DIMM is faulty before you replace it.
-> show /System/Memory /System/Memory Targets: Properties: health = OK health_details = - ... ->
If the health_details property identifies a faulty DIMM, replace it. See Remove a DIMM.
-> show /System/Memory/DIMMs /System/Memory/DIMMs Targets: DIMM_x DIMM_y ... ->
where x, y, and so on, are the slot numbers where DIMMs are installed.
If a DIMM is not recognized, check its installation. See Remove a DIMM.
-> show /System/Memory/DIMMs/DIMM_x /System/Memory/DIMMs/DIMM_7 Targets: Properties: health = OK health_details = - ... ->
where x is the number of the DIMM, from 0 to 23.
If the health_details property identifies the DIMM as faulty, or the DIMM cannot be identified, replace it. See Remove a DIMM.
If a DIMM is faulty, you will see /SYS/MB/Px/Dy under the Value heading where:
x is 0 or 1.
y is 0 to 11.
For example:
-> show faulty Target | Property | Value --------------------+------------------------+------------------------------- /SP/faultmgmt/0 | fru | /SYS/MB/P0/D7 ... ->
If a DIMM is faulty, replace it. See Remove a DIMM.
If a FRU value different from /SYS/MB/Px/Dy is displayed, see Component Service Task Reference to identify which component is faulty.
See Display Faults (faultmgmt Shell).
Check the Fault class and Description fields for more information.
If a DIMM is faulty, replace it. See Remove a DIMM.