Juniper Networks M5 - Manual (Page 98)

Maintain the Power Supplies
To clean the transceivers, use an appropriate fiber-cleaning device, such as RIFOCS
Fiber Optic Adaptor Cleaning Wands (part number 946). Follow the directions for the
cleaning kit you use.
After you have cleaned the transceiver on the fiber-optic PIC, make sure that the
connector tip of the fiber-optic cable is clean. Use only an approved alcohol-free
fiber-optic cable cleaning kit, such as the Opptex Cletop-S® Fiber Cleaner. Follow the
directions for the cleaning kit you use.
Maintain the Power Supplies
To verify that the power supplies are functioning normally, perform the following procedures
on a regular basis:
•
Check that the blue OUTPUT OK LED is lit on the faceplate of both power supplies.
For more information about the LED, see “Power Supply LEDs and Self-test Button”
on page 19.
•
Issue the following CLI command to check the status of the power supplies. As shown
in the sample output, the value OK in the Status column indicates that the power
supply is operating normally:
user@host> show chassis environment
Class Item Status Measurement
Power Power Supply A OK
Power Supply B OK
...
For further description of the output from the command, see the JUNOS Internet
Software Operational Mode Command Reference: Protocols, Class of Service, Chassis,
and Management.
•
Check the red and yellow alarm LEDs on the craft interface. 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 122.
•
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.
78 M5 and M10 Internet Routers Hardware Guide