Participative digital photography to evaluate the transition to university. Digital
CURRÍCULUM ABREVIADO (CVA)
C.5. Méritos de gestión
The front panel LEDs show server status at a glance. They include four diagnostic LEDs, and
NOTE: If input power is not maintained to both power supplies on HP Integrity cx2600 and cx2620 servers, front panel LEDs might not display accurate system information. Input power must be maintained to both power supplies (even those that have failed) for LEDs to display accurate system faults.
Removing input power is not equivalent to a power supply failure as detected by the circuitry which drives the front panel LED status. When external power is removed from a power supply, the system's ability to report hardware failures in the unpowered circuits is also removed. It is a normal and expected behavior of the system that LEDs might not properly reflect power supply status when input voltage is removed.
If the System LED is flashing amber at 1 Hz, attention is required. For information, look at the diagnostic LEDs and the MP Status log. The LEDs turn off when you access the MP log.
To confirm LED status display of the power supply state, use the System Event Log (MP SEL command).
Figure 4-1 Front Panel LEDs
Table 4-2 Front Panel LED Definitions
Description
System is booting or running EFI.
Green 0.5 Hz
Running System LED
System normal. The operating system is up and running.
Green Steady
Running System LED
Attention required. Look at the diagnostic LEDs and the MP Status log for information. The LEDs turn off when you access the MP log.
Amber 1 Hz
Warning System LED
NOTE: Input power must be maintained to both power supplies (even those that have failed) for LEDs to display accurate system faults.
Fault detected. Look at the four diagnostic LEDs and the MP status log for information. The LED is Red
2 Hz Fault
System LED
turned off by the MPDC command, or by correcting the problem.
Troubleshooting Using LED Indicators 57
Table 4-2 Front Panel LED Definitions (continued)
Displays system error condition (when system LED is flashing yellow) or fault condition (when Yellow or
Red None
Diagnostic LEDs (1 thru 4)
system LED is flashing red). For error code information, seeTable 4-3.
The system is off (no power to LAN circuits) or hardware failure.
N/A None
Off LAN LED
LAN link is established but LAN is inactive.
Green
Disk is not active.
N/A
The system locator LED can be remotely or locally activated or deactivated to call attention to a Blue
1 Hz (Flag)
Locator LED/Button
particular server. It is also a test for a running BMC on the system board.
DC power is not available to the server.
Off Off
No power Power LED
DC power is connected to the server, but power is off. Standby power (3.3V) is applied to some server circuits.
Power is applied to all server circuits.
Green Steady
Main power on Power LED
Table 4-3lists diagnostic LED displays and descriptions.
Table 4-3 Diagnostic LED Displays and Descriptions
Description
Fan 3 warning. BMC is reporting that one fan rotor is turning more slowly than expected or is stopped.
Investigate problem at the first opportunity.
Flashing
Fan 2 warning. BMC is reporting that one fan rotor is turning more slowly than expected or is stopped.
Investigate problem at the first opportunity.
Flashing
Fan 5 warning. BMC is reporting that one fan rotor is turning more slowly than expected or is stopped.
Investigate problem at the first opportunity.
Flashing
Power supply 2 warning. The power supply is functioning but reporting an error condition. Replace the power supply at the first opportunity.
Flashing
No video warning. No video output is available from the MP. Replace the MP card.
Flashing
Table 4-3 Diagnostic LED Displays and Descriptions (continued)
Fan 4 warning. BMC is reporting that one fan rotor is turning more slowly than expected or is stopped.
Investigate problem at the first opportunity.
Flashing
System battery voltage low. Replace the system battery.
Power supply 1 warning. The power supply is functioning but reporting an error condition. Replace the power supply at the first opportunity.
Flashing
Memory load order warning. Verify that DIMMs are correctly installed.
Intake air temperature hot. Check for blockage. Clean air intake openings.
CPU 1 temperature warning. Check for blockages.
Investigate the problem at the first opportunity.
Flashing
CPU 0 temperature warning. Check for blockages.
Investigate the problem at the first opportunity.
Flashing
Undefined error condition (warning only). Look at the SEL.
Fan 3 failure. BMC is reporting that both fan rotors are turning more slowly that expected or are stopped.
Replace the fan, fan control board, or system board.
Flashing
Fan 2 failure. BMC is reporting that both fan rotors are turning more slowly that expected or are stopped.
Replace the fan, fan control board, or system board.
Flashing
Fan 5 failure. BMC is reporting that both fan rotors are turning more slowly that expected or are stopped.
Replace the fan, fan control board, or system board.
Flashing
VRM over-voltage fault. Replace the system board.
Flashing
System firmware error. Power off the server, wait 20 seconds, and resume operation. If the problem continues, replace the system board.
Flashing
VRM fault. Replace the system board.
Flashing
Power supply 2 fault. Replace power supply 2, the power supply interface assembly, or the system board.
Flashing
Fan 1 failure. BMC is reporting that both fan rotors are turning more slowly that expected or are stopped.
Replace the fan, fan control board, or system board.
Flashing
CPU 1 turbo fan failure. Replace CPU 1, the CPU power module, or the system board.
Flashing
VRM under-voltage fault. Replace the system board.
Flashing
Fan 4 failure. BMC is reporting that both fan rotors are turning more slowly that expected or are stopped.
Replace the fan, fan control board, or system board.
Flashing
CPU 0 turbo fan failure. Replace CPU 0, the CPU power module, or the system board.
Flashing
Troubleshooting Using LED Indicators 59
Table 4-3 Diagnostic LED Displays and Descriptions (continued)
Power supply 1 fault. Replace power supply 1, the power supply interface assembly, or the system board.
Flashing
12V range error. Something is loading the 12V source.
This can be the power supply, the power supply Flashing
interface, the system board, or any used circuit.
Replace items (one at a time) to identify the cause.
Memory bank error. Verify that DIMMs are correctly installed.
Memory mismatch fault. DIMMs of different size are installed in a single quad. Replace DIMMs as required.
Flashing
Memory access fault. Check error messages in the SEL.
Reseat or replace DIMMs as required.
Flashing
Memory error detected. Check error messages in the SEL. Reseat or replace DIMMs as required.
Flashing
Intake air over-temperature fault. Check for blockages.
Replace the system board.
Flashing
BMC firmware error. Power off the server, wait 20 seconds, and resume operation. If the problem continues, replace the system board.
Flashing
MP firmware error. Power off the server, wait 20 seconds, and resume operation. If the problem continues, replace the MP.
Flashing
CPU 1 over-temperature fault. Check for blockages.
Replace CPU 1 or the system board.
Flashing
CPU 0 over-temperature fault. Check for blockage.
Replace CPU 0 or the system board.
Flashing
Either or both CPUs not detected. Check CPU installation and replace CPU, power module, or system board if necessary.
Flashing
Undefined error condition (catastrophic failure). Look at the SEL.
The rear panel LEDs show LAN and power supply status at a glance. The rear panel LEDs are shown inFigure 4-2and listed inTable 4-4, together with descriptions of LAN and power status indications.