Table 25 Basic low end troubleshooting
(continued)
Action
Condition
Step
Nothing is logged for this condition (system health
is off or steady green, and power is steady green).
Examine the LED next to each RAID connector,
and replace the RAID HBA (if this LED is either
steady amber or steady red, it indicates RAID
drives are degraded or corrupted, respectively).
The preceding problem is fixed when all of these
LEDs remain off, after next power on.
There are RAID channel redundancy failures.
4d
Front panel LEDs indicate that the server power is
turned on, and that the server is either booting or
running the OS. Nothing may be logged for this
condition (system health is steady green, internal
health is steady green, external health is steady
green, power is steady green). Examine the iLO
3 MP logs for entries related to CPUs, CPU power
modules (PPMs), shared memory, and core I/O
devices (see
“Errors and reading error logs”
(page 80)
for details).
NOTE:
Be sure to check the console settings from
the Boot Manager for your OS.
The preceding problem is fixed when OS prompt
appears on the system console.
Cannot see OS prompt on system console.
5
Table 26 Advanced low end troubleshooting
Action
Symptom/Condition
Step
System event logging has stopped and a BMC malfunction is assumed
(system health is steady green, internal health is steady green, external
health is steady green, and power is steady green).
1. Examine console messages for any UEFI errors or warnings about
BMC operation or communications.
2. Examine the BMC heartbeat LED; if it is not flashing green, then replace
the system board CRU (see
“Troubleshooting the iLO 3 MP subsystem”
(page 92)
for details).
3. Test the operation of the BMC by toggling the UID locator switch LED
on the front panel -- the blue LED is turned on/off by the BMC, when this
switch is toggled
The preceding problem is fixed when the BMC heartbeat LED is flashing
green, and the SEL resumes logging.
Cannot read System Event Log
from the system console.
6
Front panel LEDs indicate that the server power is turned on, and it is
either booting or running the OS (system health is steady green, internal
health is steady green, external health is steady green, and power is
steady green). Nothing may be logged for this condition. 1. Use a paper
clip, pencil, or pen to press the INIT button on the front panel to start a
system initialization. 2. Reboot the OS and escalate. 3. Obtain the system
hardware status dump for root cause analysis. 4. Examine the iLO 3 MP
logs for entries related to CPUs, CPU power modules (PPMs), shared
memory, and core I/O devices (see
“Errors and reading error logs”
(page 80)
for details).
The preceding problem is fixed when the root cause has been determined.
OS is non-responsive (hung).
7
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Troubleshooting
