Juniper EX9214

Soluon
Follow these guidelines to troubleshoot the fans:
• Check the fan LEDs and alarm LEDs on the cra interface.
If the major alarm LED on the cra interface glows, use the CLI to get informaon about the source
of an alarm condion:
user@switch> show chassis alarms
If the CLI output lists only one fan failure and the other fans are funconing normally, the fan is most
likely faulty and you must replace the fan tray.
• Place your hand near the exhaust vents at the side of the chassis to determine whether the fans are
pushing air out of the chassis.
• If a fan tray is removed, both a minor alarm and a major alarm occur.
• The following condions automacally cause the fans to run at full speed and also trigger the
indicated alarm:
• A fan fails (major alarm).
• The switch temperature exceeds the
temperature warm threshold (minor alarm).
• The temperature of the switch exceeds the temperature hot threshold (major alarm and automac
shutdown of the power supplies).
Troubleshoong Power Supplies in an EX9200 Switch
IN THIS SECTION
Problem | 286
Cause | 286
Soluon | 286
285