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Color
Intermittent
Flashing Green
Static Green
Static Amber
4.4.7
Cooling Module LEDs
Each cooling module has two (2) 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-
8.
Figure 4-9: Cooling Module LEDs and Cooling Fan Locations
Color
Static Amber
The subsystem has a novel approach to stabilizing the temperature
within the chassis:
Status-indicating LEDs
Chapter 4: Subsystem Operation and Monitoring
Figure 4-8: PSU LED
Status
The power supply has not been turned on. The
PSU LED flashes when the subsystem is
connected to a power source but not yet turned
on.
The PSU is operating normally
The PSU has failed and is unable to provide
power to the subsystem.
Table 4-7: PSU LED Definitions
Status
ON: The cooling fan has failed.
OFF: The cooling fan is operating normally.
Table 4-8: Cooling Module LED Definitions
When temperature sensors detect an elevated temperature
reading or firmware acknowledges the failure of any cooling
fan/power supply, firmware will instruct the remaining cooling
4-13
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