Troubleshooting The Fan Trays; Troubleshooting An Ac Power Supply Unit - Cisco Nexus 7000 Hardware Installation And Reference Manual

Troubleshooting the Fan Trays

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Troubleshooting the Fan Trays

The following conditions indicate that there is a problem with one or more fan tray modules:
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While the system is running, each fan tray module should be exhausting air and its STATUS LED should
be green, which indicates that all of the fans in that tray are running above the threshold speed.
For a listing of the fan tray LEDs and the conditions that they indicate, see
To troubleshoot a fan tray problem, follow these steps until the problem is resolved:
Check if the STATUS LED is flashing red or is not lit on each fan tray. If the LED is flashing red, at least
Step 1
one fan in the tray is running at a slow speed or not running. If the LED is not lit, no power is going to
the fan tray.
Step 2 Check if the power supply units are providing power to the chassis components. The Output LED on
each power supply unit should be lit and green.
Step 3 Make sure that the fan tray is properly seated in the chassis by following these steps:
a.
b.
c.
d.
Call Cisco TAC and describe the conditions that you are seeing with the fan tray. See the
Step 4
Customer Service" section on page

Troubleshooting an AC Power Supply Unit

The following conditions indicate that you need to troubleshoot one or more AC power supply units:
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Also, when there are power problems with other modules or the supervisor module PWR MGMT LED
is amber, you need to troubleshoot the power supply units or check the seating of the modules that are
not receiving power.
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
9-2
For an amber FAN LED, see the
For an amber SUP LED, see the
For an amber FAB LED, see the
For an amber IOM LED, see the
The FAN LED on the chassis is amber.
The STATUS LED on the fan tray is flashing red.
Loosen the captive screws on the fan tray until they are no longer in the chassis.
Place one hand on the handle for the fan tray and pull the fan tray part way out of the chassis.
Push the fan tray back into the chassis until it is fully seated on the midplane and make sure that
each captive screw on the fan tray is aligned with its hole in the chassis.
Securely tighten each captive screw (to 8 in-lb [0.90 N·m]) to the chassis.
The PSU LED on the chassis is amber.
The Input 1, Input 2, or Output LED on a power supply unit is not green.
The Fault LED on a power supply unit is flashing red.
"Troubleshooting the Fan Trays" section on page
"Troubleshooting the Supervisor Modules" section on page
"Troubleshooting the Fabric Modules" section on page
"Troubleshooting the I/O Modules" section on page
9-8.
Chapter 9 Troubleshooting
9-2.
9-5.
9-6.
9-7.
Table D-7 on page D-7.
"Contacting
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