Cisco Systems Cisco 3600 manual Color Description, Color RPS Status, Color Power Supply Status

Appendix A Troubleshooting

Reading Front-Panel LEDs

Table A-1 SYSTEM LED in Cisco 3620, Cisco 3640, and Cisco 3660 Routers

Color	Description
Off	Router is not receiving power.
Blinking green	Router is running the ROM monitor. No errors detected.
Solid green	Router is operating normally. No errors detected.
Amber	Router is receiving power but not functioning properly. Possible power-on self-test
	error or over-temperature condition detected.
Alternating	Power-on self-test detected. The router is attempting to reload the ROM monitor.
amber and green

Note The Cisco 3660 router does not have the RPS LED described in Table A-2.

Table A-2 RPS LED in Cisco 3620, Cisco 3640, and Cisco 3660 Routers

Color	RPS Status
Off	Not installed.
Blinking green	RPS and the power supply are both operational. Because the router can accept
	power from only one source, you can do either of the following:
	• Unplug the power supply and use the RPS.
	• Turn off the RPS and use the power supply. The RPS can remain connected.
Solid green	Operational.
Amber	Installed but not operational.

Note The power supply LEDs (PS1 and PS2) described in Table A-3are found only on the Cisco 3660 router’s front panel.

Table A-3 Power Supply LEDs in Cisco 3620, Cisco 3640, and Cisco 3660 Routers

Color	Power Supply Status
Green	Installed and operating correctly.
Amber	Installed with fault conditions detected.
Blinking amber	Thermal or out-of-range voltage protection shutdown.
Off	Powered off or failed.

Cisco 3600 Series Routers Hardware Installation Guide

A-6 OL-2056-05