Juniper Networks M10i Troubleshooting the Power System, LED on All Supplies Are Blinking or Off

Chapter 12: Troubleshooting Hardware Components

user@host> show chassis fpc pic-status

Slot 0 Online
PIC 0	4x	OC-3	SONET, MM
PIC 1	1x	CSTM1, SMIR
PIC 3	2x	OC-3	ATM, MM
Slot 1 Online
PIC 0	1x	OC-12		SONET, MM
PIC 1	1x	OC-12		ATM, MM
PIC 2	2x	OC-3	ATM, MM
PIC 3	2x	OC-3	ATM, MM

For further description of the output from the command, see the JUNOS System

Basics and Services Command Reference.

Troubleshooting the Power System

When a power supply is functioning correctly, the green LED labeled OUTPUT OK is lit steadily.

If any other LED states apply, consult the following sections:

■LED on All Supplies Are Blinking or Off on page 85

■LED on One Supply Is Off on page 85

LED on All Supplies Are Blinking or Off

If the LED is off on all power supply faceplates, either someone has switched off power to the router or the system temperature has exceeded the acceptable maximum. In the latter case, the Routing Engine shuts down all power supplies. There is no power to the router, so no LED is lit, including the alarm LEDs on the craft interface.

Excessive system temperature is almost always caused by excessive environmental temperature. Correct the environmental temperature before repowering the router.

LED on One Supply Is Off

If the LED on one power supply is off, but the LED on the other supplies indicate that they are functioning properly, perform the following diagnostic procedure:

Troubleshooting the Power System ■ 85