Oracle SPARC T5-1B, Руководство по обслуживанию

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Determine Which DIMM Is Faulty
Determine Which DIMM Is Faulty
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
fmadm faulty
command.
This command displays the FRU name. See “Managing Faults” on page 32 and “DIMM FRU
Names” on page 64 .
Caution - Components inside the chassis might be hot. Use caution when servicing components
inside the chassis.
1.
Check the front panel Fault LED.
See “Interpreting LEDs” on page 23 .
When a faulty DIMM is detected, the front panel Fault LED is illuminated. Before opening the
server module to check the DIMM Fault LEDs, verify that the Fault LED is lit.
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If the Fault LED is not lit, and you suspect there is a problem, see “Diagnostics
Process” on page 18 .
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If the Fault LED is lit, go to the next step.
2.
(If needed) Prepare for service.
See “Preparing for Service” on page 39 .
3. Press the Fault Remind button on the motherboard.
While the Remind button is pressed, an LED next to the faulty DIMM lights, enabling you to
identify the faulty DIMM. See “DIMM LEDs” on page 66 .
Tip -
The DIMM Fault LEDs are small and difficult to identify when they are not lit. If you do
not see any illuminated LEDs in the area of the DIMM LEDs, use the
fmadm faulty
command
and the DIMM layout table to locate the faulty DIMM.
4. Remove the faulty DIMM.
See “Remove a DIMM” on page 68 .
Related Information
■
“DIMM FRU Names” on page 64
Servicing DIMMs 67