4 Hardware Failures
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 power switch on the device is turned
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.
PoE power supply
l The power sourcing equipment does not
support the PoE function or is faulty.
l The power sourcing equipment is
incorrectly configured (the PoE function
is disabled or the power-off time range is
improperly set).
l The line is faulty (the network cable or
distribution frame is damaged).
l The AP is faulty.
Huawei AP3x10xN&5x10xN&5x30xN&6x10xN&7x10xN
Hardware Installation and Maintenance Guide
4 Hardware Failures
Issue 11 (2015-05-18) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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