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Static Green
Static Red
4.4.7
Cooling Module LEDs
Each cooling module has two (2) red LEDs located on the PSU module.
Each LED corresponds to an individual cooling fan. (See Figure 4-9) Please
refer to the cooling module LED definitions shown in Table 4-9.
Figure 4-9: Cooling Module LEDs and Cooling Fan Locations
Color
Static Green
Static Red
The subsystem has a novel approach to stabilizing the temperature within
the chassis:
Status-indicating LEDs
Chapter 4: Subsystem Operation and Monitoring
The PSU is operating normally
The PSU has failed and is unable to provide power
to the subsystem.
Table 4-8: PSU LED Definitions
Status
The cooling fan is operating normally.
The cooling fan has failed.
Table 4-9: Cooling Module LED Definitions
When temperature sensors detect an elevated temperature reading
or the failure of any cooling fan/power supply, firmware will
instruct the remaining cooling fans to operate at a high speed. Once
the ambient temperature falls back within the safe range or the fault
condition is corrected, cooling fans will resume the low rotation
speed.
4-13
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