User guide

Table 41 Explanations of blade status LED states
Possible states and explanationsRepresentsLED Color
Processor statusGreen
• Steady off: blade main processor is not operating (or
blade is booting)
• Steady on: blade main processor is not operating
(however, this does not apply to the LMD; steady on
indicates that the LMD main processor is operating
normally)
• Blinks one time every second (1 Hz): blade main
processor is operating normally
• Blinks 10 times every second (10 Hz): identify mode
• Steady on for three seconds, then blinks twice at 1 Hz,
and then repeats: blade firmware is downloading
Health statusAmber
• Steady off: blade power and control subsystem is
operating normally
• Steady on: blade power and control subsystem has
failed
Steady on also can mean that the blade power and control
subsystem firmware is autoleveling. In conjunction with the
blue amber LED blinking one time every 10 seconds, this
is a normal condition. Autoleveling takes about three
minutes for each blade, and blades within an I/O
management unit autolevel in series. It can take as long as
three minutes for the power and control subsystem to
download.
Never remove a blade when the amber LED is steady on
unless it has been on continuously for at least 10 minutes.
Power control statusBlue
• Steady off: blade is not receiving power
• Steady on: blade is powered down; ready to be
replaced (swap mode)
• Blinks one time every 10 seconds (flash): blade is
powered on; operating normally
Table 42 Blade status LED states: normal conditions
State and ExplanationLED Color
Blinks one time every second (1Hz): blade main processor is operating normally
(however, this does not apply to the LMD; steady on indicates that the LMD
main process is operating normally)
Green
Steady off: no errors are detected; blade PIP is operating normallyAmber
Blinks one time every 10 seconds (flash): blade is powered on; operating
normally
Blue
Actions based on LED states
When the system is operating properly, service actions should be based on events first and foremost.
However, some situations occur when the amber LED indicates problems that are not detected by
the event system. You should always act on any amber LED that is steady on, which indicates that
the component power and control subsystem has failed. In this case, replace the component.
When you replace a blade FRU or escalate a problem based on LED states, perform the following
steps:
1. Observe and report the timing pattern of the blue, amber, and green LED group. Spend at
least 30 seconds observing the LEDs and record the results in the service request (SR) and on
Interpreting LEDs 211