Oracle EXADATA X5-2, Service Manual

Page: 31 / 262

Troubleshoot Hardware Faults Using the Oracle ILOM Web Interface
Motherboard Status Indicators
The motherboard contains the following status indicators (LEDs).
■
DIMM Fault Status Indicators: Each of the 24 DIMM sockets on the motherboard has
an amber fault status indicator (LED) associated with it. If Oracle ILOM determines that
a DIMM is faulty, pressing the Fault Remind button on the motherboard I/O card signals
the service processor to light the fault LED associated with the failed DIMM. For more
information on DIMM fault status indicators and the location of the Fault Remind Button,
see “Servicing the DIMMs” on page 77 .
■
Processor Fault Status Indicators:
The motherboard includes a fault status indicator
(LED) adjacent to each of the two processor sockets. These LEDs indicate when a processor
fails. Pressing the Fault Remind button on the motherboard I/O card signals the service
processor to light the fault status indicators associated with the failed processors. For more
information on processor fault status indicators and the location of the Fault Remind Button,
see “Servicing Processors” on page 99 .
■
Fault Remind Status Indicator:
This status indicator (LED) is located next to the Fault
Remind button and is powered from the super capacitor that powers the fault LEDs on
the motherboard. This LED lights to indicate that the fault remind circuitry is working
properly in cases where no components have failed and, as a result, none of the component
fault LEDs illuminate. For more information on the fault remind status indicator and
the location of the Fault Remind Button, see “Using the Storage Server Fault Remind
Button” on page 80 .
■
STBY PWRGD Status Indicator: This green status indicator (LED) is labeled STBY
PWRGD and is located on the motherboard near the rear of the server. This LED lights
to inform a service technician that the motherboard is receiving standby power from at
least one of the power supplies. This LED is provided to help prevent service actions on
the server internal components while the AC power cords are installed and power is being
supplied to the server.
Note -
The service instructions for all internal components require that all AC power be
removed from the power supplies prior to the server top cover being removed.
Troubleshooting System Cooling Issues
Maintaining the proper internal operating temperature of the server is crucial to the health of the
server. To prevent server shutdown and damage to components, address over temperature and
hardware-related issues as soon as they occur. If your server has a temperature-related fault, the
cause of the problem might be:
Troubleshooting and Diagnostics 31