The PRTE power interface board leads one -48 V input to the backplane, and then the
backplane supplies power to each board.
Two PRTE boards can be configured for dual-system hot backup. If one PRTE board is off,
the other supplies power to the chassis can guarantee normal running of the system.
2.5.10 Heat Dissipation
This topic describes the ventilation of the MA5603T chassis.
The MA5603T chassis has a fan tray at the left to blow air for heat dissipation.
The airflow for the MA5603T chassis is as follows: The cool air flows to the chassis through
the left side, and then the fans blow the air to the right side of the chassis through the boards.
Finally, the air exits through the right side of the chassis. Figure 2-26 shows the ventilation of
the MA5603T chassis.
Figure 2-26 Ventilation of the MA5603T chassis
2.6 MA5608T Chassis Description
This topic describes the chassis and fan tray of the MA5608T.
2.6.1 Appearance
The MA5608T has a fan tray at the left. The subrack is installed in the cabinet through the
mounting brackets.
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.
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