Fault Description
The SYS indicator of a device is off.
Possible Causes
Power Supply Mode
|
Possible Cause
|
Power supply using a power module
|
- 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.
|
PoE power supply
|
- The power sourcing equipment does not support the PoE function or is faulty.
- The power sourcing equipment does not support the required power supply mode.
- The power sourcing equipment does not provide sufficient power.
- 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
Power Supply Mode
|
Troubleshooting Procedure
|
Power supply using a power module
|
- Check whether the device is powered off.
- Check that the power cable is securely connected to the device.
- Check whether the power supply is normal.
Replace the power adapter with a normal one. If the device is powered on, the original power adapter is faulty. Contact technical support personnel or Huawei agent and ask them to replace the power adapter.
- If the device still cannot be powered on, the device itself is faulty. Contact technical support personnel or Huawei agent and ask them to replace the device.
|
PoE power supply
|
- Check whether the power sourcing equipment supports PoE or is faulty.
- Check whether the power output mode of the power sourcing equipment is supported by the powered device.
- Check whether the power sourcing equipment can support the maximum power consumption of the device.
- Check whether the configuration on the power sourcing equipment causes PoE power supply errors, such as the PoE function is disabled or the power-off time range is incorrectly set.
- Check whether the network cable or distribution frame is faulty.
- If the device still cannot be powered on, the device itself is faulty. Contact technical support personnel or Huawei agent and ask them to replace the device.
|
The output power of an 802.3af PSE port is 15.4 W, that of an 802.3at PSE port is 30 W, and that of an 802.3bt PSE port is 60 W.