Huawei SmartAX MA5600T Hardware Description page 101

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Function
The functions of the fan tray are as follows:
l
l
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LED
Indicato
r
STATUS
Issue 24 (2018-07-30)
Heat dissipation
The fan tray is at the top of the service subrack and exhausts hot air for heat dissipation.
The cool air flows to the subrack from the bottom of the subrack and then is exhausted
from the top of the subrack after passing the boards.
Monitoring
The fan tray is configured with the fan monitoring board to detect whether the fans are
working in the normal state. The fan monitoring board also provides the port for
communication with the control board. The detected information is transmitted to the
control board through the fan monitoring board periodically.
Speed adjustment
The rotating speed of the fans can be adjusted according to the detected temperature
automatically or be adjusted by setting the related data manually.
Color Status
Yellow Blinking
quickly (on
for 0.125 s
and off for
0.125 s
repeatedly)
Green Blinking
Yellow Blinking
slowly (on
for 1 s and
off for 1 s
repeatedly)
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Meaning Operation Description
The fan tray No action is required.
is not
registered
or is being
loaded.
The Check communication between the
communica fan tray and device.
tion
between the
host and the
fan tray is
interrupted.
The fan tray No action is required.
works in
the normal
state.
The fan tray Handle it based on the
generates corresponding alarm.
alarms that
do not
affect
services.
2 Subrack and Chassis
81