Troubleshooting The T640 Fpcs And Pics; Troubleshooting The T640 Fpcs - Juniper T640 Hardware Manual

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Troubleshooting the T640 FPCs and PICs

Troubleshooting the T640 FPCs

Problem
Solution
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Documentation
Copyright © 2010, Juniper Networks, Inc.
For information about the alarms, see "Troubleshooting Using the T640 Chassis and
Interface Alarm Messages" on page 165.
Place your hand near the exhaust vents at the rear of the chassis to determine whether
the fans are pushing air out of the chassis.
If the display on the craft interface lists only one fan failure and the other fans are
functioning normally, the fan is probably faulty and you need to replace the fan tray.
T640 Cooling System Description on page 61
Maintaining the T640 Air Filters on page 146
Maintaining the T640 Fan Trays on page 147
Replacing a T640 Air Filter on page 191
Replacing a T640 Fan Tray on page 187
Troubleshooting the T640 FPCs on page 169
Troubleshooting the T640 PICs on page 170
The following LEDs indicate a problem:
The red LED above the FPC on the craft interface is lit.
FAIL
The OK for the FPC on the craft interface is off.
During normal operation the
If the red LED above the FPC is on, look at the display on the craft interface to
FAIL
check the status of the FPC and the PICs that are plugged into it.
Make sure the FPC is properly seated in the midplane. Verify that each ejector handle
has been turned clockwise and is tight. Use a screwdriver to verify that the screws
inside the ejector handles are tight.
To check the status of an FPC, use the following CLI command:
user@host> show chassis fpc
To display more detailed information, use the following option:
user@host> show chassis fpc detail
T640 Craft Interface Description on page 41
T640 FPC Description on page 18
Chapter 16: Troubleshooting T640 Router Hardware Components
OK LED lights steadily.
169