Huawei AP4050DN-E - 4 Hardware Failures; 4.1 A Device Fails to Be Powered On

4 Hardware Failures
About This Chapter
This section describes common methods for troubleshooting typical hardware faults.
4.1 A Device Fails to Be Powered On
4.1 A Device Fails to Be Powered On
Fault Description
The SYS indicator of a device is off.
Possible Causes
Power Supply Mode
Possible Cause
Power supply using a power module
l The device is powered off.
l The power cable is not securely
connected to the device.
l The power supply unit has failed.
– If the device connects to an external
power source, its power adapter may
fail.
– If the device has a built-in power
supply, the device itself may be
faulty.
AP4050DN-E
Hardware Installation and Maintenance Guide
4 Hardware Failures
Issue 05 (2018-02-02) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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