Foundry NetIron MLX Series Installation and Basic Configuration Guide
6-14
© 2008 Foundry Networks, Inc.
December 2008
12. Connect the power to its AC or DC source.
13. Observe the LEDs on the power supply front panel.
•
For a DC supply, the DC IN and DC OUT LEDs should be green, which indicates the power supply is
providing power to the chassis components.
•
For an AC supply, the AC OK and DC OK LEDs should be green, which indicates the power supply is
providing power to the chassis components (See Figure 6.6).
•
If the ALM LED is On (Amber) then the power supply has failed.
For information about troubleshooting this problem, see Table 3.5 on page 3-51.
Replacing Fan Assemblies
The NetIron MLX Series assemblies are described in the following sections:
•
“Replacing Fan Assemblies in the NetIron MLX-32” on page 6-14
•
“Replacing Fan Assemblies in the NetIron MLX-16” on page 6-15
•
“Replacing the Fan Tray Assembly in the NetIron MLX-4 and NetIron MLX-8” on page 6-17
You can replace a fan or a fan control module while the NetIron MLX Series chassis is powered on and running.
The fans and fan control modules are located on the rear panel of the NetIron MLX Series chassis.
The following sections provide more information about replacing these components.
Replacing Fan Assemblies in the NetIron MLX-32
CAUTION:
Removal of NetIron MLX-32 rear fan modules allows access to bus bars and backplane. Avoid con-
tact with these parts. There are hazardous energy levels at these locations.
The NetIron MLX-32 has ten fan assemblies that pull air out. They are accessible from the rear of the chassis.
They are numbered as indicated in Figure 6.7.
You can remove and replace a fan assembly while the NetIron MLX-32 chassis is powered on and running.
CAUTION:
To avoid overheating of the NetIron MLX-32 chassis, remove only one fan assembly at a time, and
replace it promptly. Wait for the LED on the fan assembly being replaced to turn green before replacing another fan
assembly. Do not remove all fans from the chassis at one time.
Before replacing a fan assembly, you need the following:
•
A new fan assembly, which you can order from Foundry
•
A small flathead screwdriver
•
An ESD wrist strap with a plug for connection to the ESD connector on the front of the chassis.
WARNING:
For safety reasons, the ESD wrist strap should contain a 1 meg ohm series resistor.
To replace a fan assembly, do the following:
1.
Put on the ESD wrist strap and ground yourself by inserting the plug into the ESD connector on the chassis.
2.
Using the flathead screwdriver, remove the screws that secure the fan assembly face plate on the rear of the
chassis.
3.
Remove the fan assembly from the chassis by grasping the handle on the face plate and pulling the fan
assembly toward you as shown in Figure 6.8. Pulling the fan assembly unseats the fan connector from a
chassis connector.
