HP Integrity cx2600 Maintenance Manual page 57

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
LED/Button System State
System LED Off
System LED Running
System LED Running
System LED Warning
System LED Fault
Flash Rate Color
None N/A
0.5 Hz Green
Steady Green
1 Hz Amber
2 Hz Red
Description
System is off.
System is booting or running EFI.
System normal. The operating system is up and
running.
Attention required. Look at the diagnostic LEDs
and the MP Status log for information. The LEDs
turn off when you access the MP log.
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
turned off by the MPDC command, or by correcting
the problem.
Troubleshooting Using LED Indicators 57