This procedure describes how to use the DIMM LEDs on the motherboard to pinpoint the physical location of a faulty DIMM.
Note - You can also obtain the location of the faulty DIMM using the Oracle ILOM show faulty command. This command displays the FRU name (such as /SYS/MB/CMP0/BOB0/CH0). Use the FRU name and information to locate the faulty DIMM. See DIMM Configuration Reference.
See Diagnostics LEDs.
When a faulty DIMM is detected, the front panel fault LED and the motherboard DIMM Fault LEDs are illuminated. Before opening the server module to check the DIMM Fault LEDs, verify that the System Fault LED is lit.
If the System Fault LED is not lit, and you suspect there is a problem, see Diagnostics Process.
If the System Fault LED is lit, go to the next step.
While the Remind button is pressed, an LED next to the faulty DIMM illuminates, enabling you to identify the faulty DIMM.
Tip - The DIMM Fault LEDs are small and difficult to identify when they are not illuminated. If you do not see any illuminated LEDs in the area of the DIMM LEDs, assume that the DIMMs are not faulty.
Figure 6 Locating Faulty DIMMs
1 DIMM 1 (BOB0/CH1/D0)
2 Fault LED for DIMM 1
3 Locate button for LEDs of faulty DIMMs
See Remove a DIMM.