Troubleshooting Using the Server Front and Back Panel Status Indicators
These sections describe the status indicators (LEDs) located on the front and back
of the server, including those found on components and ports. This section includes
the following topics:
Related Information
Server Boot Process and Normal Operating State Indicators
A normal server boot process involves two indicators, the service processor SP
OK LED indicator and the System OK LED indicator.
When AC power is connected to the server, the server boots into standby power
mode:
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The SP OK LED blinks slowly (0.5 seconds on, 0.5 seconds off) while
the SP is starting, and the System OK LED remains off until the SP is
ready.
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After a few minutes, the main System OK LED slowly flashes the standby
blink pattern (0.1 seconds on, 2.9 seconds off), indicating that the SP
(and Oracle ILOM) is ready for use. In Standby power mode, the server is
not initialized or fully powered on at this point.
When powering on the server (either by the On/Standby button or Oracle
ILOM), the server boots to full power mode:
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The System OK LED blinks slowly (0.5 seconds on, 0.5 seconds off), and
the SP OK LED remains lit (no blinking).
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When the server successfully boots, the System OK LED remains lit.
When the System OK LED and the SP OK LED indicators remain lit, the
server is in Main power mode.
Note -
The green System OK LED indicator and the green SP OK indicator remain lit
(no blinking) when the server is in a normal operating state.
Server System-Level Status Indicators
There are seven system-level status indicators (LEDs), some of which are
located on both the server front panel and the back panel. For the location of
the status indicators, see Front and Back Panel Components. The following table describes these indicators.
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Locate Button/LED
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White
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Indicates the location of the server.
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OFF – Server is operating normally.
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FAST BLINK (250 ms) – Use Oracle ILOM to
activate this LED indicator to enable you to locate
a particular system quickly and easily.
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Pressing the Locate button toggles the LED
indicator fast blink on or off.
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Fault-Service Required
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Amber
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Indicates the fault state of the server.
Note -
When this LED indicator is lit, a system console
message might appear that includes a recommended service
action.
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System OK
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Green
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Indicates the operational state of the chassis.
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OFF – AC power is not present or the Oracle
ILOM boot is not complete.
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STANDBY BLINK (on for 100 ms, off for 2900 ms)
– Standby power is on, but the chassis power
is off and the Oracle ILOM SP is running.
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SLOW BLINK (1000 ms) – Startup sequence was
initiated on the host. This pattern begins soon
after you power on the server. This status indicates
either: power-on self-test (POST) code checkpoint
tests are running on the server host system, or the
host is transitioning from the powered-on state to
the standby state on shutdown.
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STEADY ON – The server is powered on, and
all host POST code checkpoint tests are complete.
The server is in one of the following states: the
server host is booting the operating system (OS), or
the server host is running the OS.
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SP OK
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Green
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Indicates the state of the service processor.
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OFF – Service processor (SP) is not
running.
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SLOW BLINK – SP is booting.
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STEADY ON – SP is fully operational.
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Top Fan
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Amber
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Indicates that one or more of the internal fan modules
failed.
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Back Power Supply Fault
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Amber
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Indicates that one of the server power supplies
failed.
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System Over Temperature Warning
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Amber
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Indicates a warning for an overtemperature
condition.
Note -
This is a warning indication, not a fatal
overtemperature. Failure to correct this might result in
the system overheating and shutting down
unexpectedly.
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DO NOT SERVICE
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White
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Indicates that the system is not ready to service.
Note -
The DO NOT SERVICE indicator is application specific.
This indicator is only illuminated on demand by the Host
application.
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Server Fan Status Indicators
Each fan module has one status indicator (LED). The LEDs are located on the
chassis mid-wall adjacent to and aligned with the fan modules and are visible
when the server top cover is removed.
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Fan Status
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Amber
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Off – The fan module is correctly installed
and operating within specification.
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Amber – The fan module is faulty. The front
TOP FAN LED and the front and back panel
Fault-Service Required LEDs are also lit if the
system detects a fan module fault.
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Storage Drive Status Indicators
There are three status indicators (LEDs) on each drive.
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OK/Activity
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Green
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OFF – Power is off or installed drive is not
recognized by the system.
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STEADY ON – The drive is engaged and is
receiving power.
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RANDOM BLINK – There is disk activity.
Status indicator LED blinks on and off to indicate
activity.
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Fault-Service Required
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Amber
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OK to Remove
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Blue
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Power Supply Status Indicators
There are two status indicators (LEDs) on each power supply. These indicators
are visible from the back of the server.
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AC OK/ DC OK
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Green
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OFF – No AC power is present.
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SLOW BLINK – Normal operation. Input power
is within specification. DC output voltage is not
enabled.
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STEADY ON – Normal operation. Input AC power
and DC output voltage are within
specification.
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Fault-Service Required
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Amber
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OFF – Normal operation. No service action is
required.
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STEADY ON – The power supply (PS) detected a
PS fan failure, PS overtemperature, PS over current,
or PS over or under voltage.
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Network Management Port Status Indicators
The server has one 10/100/1000BASE-T Ethernet management domain interface,
labeled NET MGT. There are two status indicators (LEDs) on this port. These
indicators are visible from the back of the server.
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Activity
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Top left
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Green
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Link speed
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Top right
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Green
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ON – 1000BASE-T link.
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OFF – 10/100BASE-T link.
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Ethernet Port Status Indicators
The server has one Gigabit Ethernet port (NET 0). There are two status
indicators (LEDs) that are visible from the back of the server.
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Activity
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Bottom left
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Green
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Link speed
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Bottom right
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Bi-colored: Amber/Green
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Motherboard Status Indicators
The motherboard contains the following status indicators (LEDs).
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DIMM Fault Status Indicators
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Each of the 24 DIMM slots on the motherboard has
an amber fault status indicator (LED) associated
with it.
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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.
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For more information on DIMM fault status
indicators and the location of the Fault Remind
button, see Servicing the
DIMMs (CRU).
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Processor Fault Status Indicators
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The motherboard includes a fault status indicator
(LED) adjacent to each of the two processor
sockets.
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These LEDs indicate when a processor fails.
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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.
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For more information on processor fault status
indicators and the location of the Fault Remind
button, see Servicing
Processors (FRU).
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Fault Remind Status Indicator
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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.
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This LED lights to indicate that the fault remind
circuitry is working properly in cases where no
components failed and, as a result, none of the
component fault LEDs illuminate.
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For more information on the fault remind status
indicator and the location of the Fault Remind
button, see Using the
Server Fault Remind Button.
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STBY PWRGD Status Indicator
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This green status indicator (LED) is labeled STBY
PWRGD and is located on the motherboard near the
back of the server.
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This LED lights to inform a service technician
that the motherboard is receiving Standby power from
at least one of the power supplies.
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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.
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