Sun Oracle Netra SPARC T3-1B, Service Manual

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Servicing Memory 71
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” on page 81 .
1. Check the front panel Fault LED.
See “Diagnostics LEDs” on page 10 .
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” on page 7 .
■
If the System Fault LED is lit, go to the next step.
2. (If needed) Prepare for service. See:
■
“Shut Down the Oracle Solaris OS” on page 56
■
“Prepare the Server Module for Removal” on page 58
■
“Remove the Server Module From the Modular System” on page 59
■
“Remove the Cover” on page 62
■
“ESD Safety Measures” on page 52
3. Press the Remind button on the motherboard.
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.