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)
4
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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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