Troubleshooting The M7I Power System; Troubleshooting The M7I Power System When The Leds On All M7I Power Supplies Are Blinking Or Off; Supply Is Off - Juniper M7I Hardware Manual

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Documentation

Troubleshooting the M7i Power System

Troubleshooting the M7i Power System When the LEDs on All M7i Power Supplies Are Blinking
or Off
Problem
Solution
Related
Documentation
Troubleshooting the M7i Power System When the LED on One M7i Power Supply Is Off
Problem
Copyright © 2010, Juniper Networks, Inc.
The following example specifies an FPC slot number (
user@host> show chassis fpc pic-status 0
Slot 0 Online PIC 0
2x OC-3 ATM, MM
For further description of the output from the command, see the Junos OS System
Basics and Services Command Reference.
Maintaining the M7i FIC and FIC Cables and PICs and PIC Cables on page 70
Replacing an M7i FIC or PIC Cable on page 92
When a power supply is functioning correctly, the green LED labeled
steadily.
If any other LED states apply, consult the following topics:
Troubleshooting the M7i Power System When the LEDs on All M7i Power Supplies Are
Blinking or Off on page 81
Troubleshooting the M7i Power System When the LED on One M7i Power Supply Is
Off on page 81
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.
M7i Power System Description on page 21
M7i Router Power Requirements on page 163
Maintaining the M7i Power Supplies on page 72
Powering on the M7i Router on page 59
The LED on one power supply is off, but the LED on the other supplies indicate that they
are functioning properly.
Chapter 14: Troubleshooting M7i Hardware Components
), which is optional.
0
2x OC-3 ATM, MM PIC 1 2x CT3-NxDS0 PIC 2
is lit
OUTPUT OK
81