Juniper M7I Hardware Manual page 99

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Copyright © 2010, Juniper Networks, Inc.
Check that the green
OUTPUT OK
For more information about the LED, see "M7i Power Supply LEDs" on page 24.
Issue the following CLI command to check the status of the power supplies. As shown
in the sample output, the value
is operating normally:
user@host> show chassis environment
Class Item
Power Power Supply 0
Power Supply 1
Temp Intake
PICs
Power Supplies
CFEB Intake
CFEB Exhaust
Routing Engine
Fans Left Fan Tray
Left Tray front fan
Left Tray second fan
Left Tray third fan
Left Tray fourth fan
For further description of the output from the command, see the Junos OS System
Basics and Services Command Reference.
Check the red and yellow alarm LEDs on the FIC. Power supply failure or removal
triggers an alarm that causes one or both of the LEDs to light. You can display the
associated error messages by issuing the following CLI command:
user@host> show chassis alarms
For a list of possible alarm messages, see "Hardware and Interface Alarm Messages"
on page 76.
Verify that the power source has the proper current rating and that each power supply
is connected to a separate power source.
Verify that the cable or cord connecting the power supply to the external power source
is securely in place and that there is no moisture accumulating near the router.
Verify that the cable or cord from the power source to the router is not damaged. If the
insulation is cracked or broken, replace the cable or cord immediately.
Verify that the power cables or cord do not touch or obstruct access to other router
components, and that they do not drape where people could trip on them.
Verify that the air flow in and out of cooling system components is not obstructed.
M7i Power System Description on page 21
M7i Router Power Requirements on page 163
Troubleshooting the M7i Power System When the LED on One M7i Power Supply Is Off
on page 81
Chapter 13: Maintaining M7i Router Hardware Components
LED is lit on the faceplate of both power supplies.
OK in the Status column indicates that the power supply
Status Measurement
OK
OK
OK 24 degrees C / 75 degrees F
OK 27 degrees C / 80 degrees F
OK 27 degrees C / 80 degrees F
OK 27 degrees C / 80 degrees F
OK 33 degrees C / 91 degrees F
OK 26 degrees C / 78 degrees F
Present
OK Spinning at normal speed
OK Spinning at normal speed
OK Spinning at normal speed
OK Spinning at normal speed
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