Cisco Systems Understand the Power Supply LEDs for Effective Troubleshooting

Chapter 5 Troubleshooting

LED Summary

Power Supply LEDs

Table 5-15summarizes the power supply LEDs for both the AC and DC power supplies.

Table 5-14	Power Supply LEDs
LED	Color/State	Description
Input OK	Off	No Input Voltage
	Amber	Input voltage out of range
	Green	Input voltage within acceptable operating range
Output Fail	Off	Disabled/Forced Shut down/No input power
	Red	Power supply fault (internal failure such as over temperature)
	Green	Operational
Table 5-15	Power Supply LEDs
LED	Color/State	Description
Input Power	Off	No input voltage
(PWR)
	Amber	Input voltage out of range
	Green	Input voltage within acceptable operating range
Status	Off	Disabled/power-down/no power
(STAT)
	Red	Power supply fault (internal failure)
	Green	Operational

Fan Tray LEDs

Table 5-16summarizes the fan tray LEDs.

		Table 5-16	Fan Tray LEDs
		LED	Color/State	Description
		Status	Off	Disabled/power down
		(TEMP)
			Amber	Over temperature
			Green	OK
		Fan (FAN)	Green	Fan rotation in range
			Amber	Fan fault
			Red	Two or more fan faults
		Minor	Off	No minor alarm
		(MIN)
			Amber	Minor alarm
		Major	Off	No major alarm
		(MAJ)
			Red	Major alarm
	Cisco ASR 903 Router Hardware Installation Guide
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