Hardware Installation Manual
26
Document #: LTRT-41749
Mediant 4000B SBC
3.2.5
Fan Tray Module
The device provides two Fan Tray modules, located on either side of the chassis. Each
module contains five integrated fans which cool the device's internal components. The Fan
Tray module located on the left side of the chassis draws air from the outside through its'
perforated grill. The incoming air passes through the chassis, cooling each module, and
then the Fan Tray module located on the right side of the chassis expels the air through its
perforated vents.
Figure 3-10: Fan Tray Modules (FAN 1 and FAN 2)
For replacing Fan Tray modules, see Section
6.5
on page
56
.
Each Fan Tray module provides a
STATUS
LED on its front panel, which indicates the
operating status of the Fan Tray module and its corresponding (closest) Power Supply
module. In other words, Fan Tray module #1 corresponds to Power Supply module #2, and
Fan Tray module #2 corresponds to Power Supply module #1.
Table 3-10: STATUS LED per Fan Tray Module
Color
State
Description
Green
On
Fan Tray module and corresponding Power Supply module
are operating normally.
Red
On
Indicates one or both of the following:
Fan Tray module failure.
Power failure due to any of the following:
Failure in corresponding Power Supply module.
Failure in power source (e.g., disconnected power
cord).
Corresponding Power Supply module not installed
in the chassis.
-
Off
Indicates one or both of the following:
No power received by the chassis. This indicates a
problem related to both Power Supply modules. This
could be due to a failure in both Power Supply modules
or a failure in the power source (e.g., disconnected
power cords) to which the modules are connected.
Fan Tray module not receiving power due to a failure in
the module or module not inserted correctly.
Summary of Contents for Mediant 4000B SBC
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