Sun Microsystems Netra T5220 - Troubleshooting Memory Faults; Using Leds to Identify the State of Devices; Front and Rear Panel Leds

1-8 Sun Netra T5220 Server Service Manual • January 2012
1.2.1.3 Troubleshooting Memory Faults
If you suspect that the server has a memory problem, follow the flowchart
(
FIGURE 1-1). Run the ALOM CMT compatability CLI (in ILOM) showfaults
command, see Section 1.4.1, “Using the ALOM CMT Compatibility CLI in ILOM” on
page 1-16 and Section 1.4.4, “Displaying System Faults” on page 1-21. The
showfaults command lists memory faults and lists the specific FB-DIMMS that are
associated with the fault. Once you identify which FB-DIMMs to replace, see
Section 4.6, “Replacing FB-DIMMs” on page 4-23 for FB-DIMM replacement
instructions. You must perform the instructions in that chapter to clear the faults and
enable the replaced FB-DIMMs.
1.3 Using LEDs to Identify the State of
Devices
The server provides the following groups of LEDs:
■ Section 1.3.1, “Front and Rear Panel LEDs” on page 1-8
■ Section 1.3.2, “Hard Drive LEDs” on page 1-12
■ Section 1.3.3, “Power Supply LEDs” on page 1-12
■ Section 1.3.4, “Ethernet Port LEDs” on page 1-13
These LEDs provide a quick visual check of the state of the system.
1.3.1 Front and Rear Panel LEDs
The seven front panel LEDs (FIGURE 1-2) are located in the upper left corner of the
server chassis. Three of these LEDs are also provided on the rear panel (
FIGURE 1-3).