Hardware Failures; A Device Fails To Be Powered On - Huawei AP4030DN Hardware Installation And Maintenance Manual

Huawei AP4030DN
Hardware Installation and Maintenance Guide

4.1 A Device Fails to Be Powered On

Fault Description
The SYS indicator of a device is off.
Possible Causes
Power Supply Mode
Power supply using a power module
PoE power supply
Issue 02 (2015-05-18)
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Hardware Failures

Possible Cause
The power switch on the device is turned

off.
The power cable is not securely

connected to the device.
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.
The power sourcing equipment does not

support the PoE function or is faulty.
The power sourcing equipment is

incorrectly configured (the PoE function
is disabled or the power-off time range is
improperly set).
The line is faulty (the network cable or

distribution frame is damaged).
The AP is faulty.

4 Hardware Failures
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