Troubleshooting the M10i Power System When LEDs on All Power Supplies Are Off

Problem

When no power is provided to the router, no LEDs are lit, including the power supply LEDs and the alarm LEDs on the HCM.

Solution

To troubleshoot the power system when no LEDs are lit:

1. Check if the router has been powered off or if a power failure has occurred.
2. Check that the power is being provided from the facility power distribution.
3. Check if the system temperature has exceeded the acceptable maximum. The Routing Engine shuts down all power supplies is the temperature exceeds the maximum. Excessive system temperature is almost always caused by excessive environmental temperature. Correct the environmental temperature before repowering the router.