The rotating speed of the fans can be adjusted according to the detected temperature
automatically or be adjusted by software manually.
LED
Indicat
or
Color Status Meaning Operation Description
FAN Green On The fan
tray
functions
properly.
No action is required.
Red On The fan
tray is
abnormal.
l A power alarm or temperature
sensor alarm may be
generated. Handle it based on
the specific alarm
l Adjust the fan speed because a
high temperature alarm or low
temperature alarm may be
generated.
l Check communication
between the fan tray and
device because
communication between them
may be interrupted.
l Fans may be faulty. Replace
the faulty fan tray.
Fan Speed Adjustment
Fans in the fan tray of the MA5608T chassis have the following modes:
l Self-check mode: Fans start running at full speed when the device is powered on for the
first time or is reset. After fans start up, the duty ratio of fans is initialized.
l Troubleshooting mode: Fans run at the old speed and related alarms are reported when
faults occur.
l Board-based fan speed adjustment mode: According to the temperatures detected by
temperature sensors on all boards, fans automatically adjust their speed.
l Temperature mode: According to the temperature of the fans, fans automatically adjust
their speed.
Figure 2-31 shows the status transfer of the fans after the fan tray starts up.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
2 Subrack and Chassis
Issue 24 (2018-07-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
137
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