Hardware Failures; A Device Fails To Be Powered On - Huawei R240D Hardware Installation

R240D
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
Troubleshooting Procedure
Power Supply Mode
Issue 03 (2016-01-26)
4
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Hardware Failures

Possible Cause

The device is powered 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 device is faulty.
Troubleshooting Procedure
4 Hardware Failures
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