A Device Fails to Be Powered On

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.

Power supply using a power module

1. Check whether the device is powered off.
2. Check that the power cable is securely connected to the device.
3. 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.

4. 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

1. Check whether the power sourcing equipment supports PoE or is faulty.
2. Check whether the power output mode of the power sourcing equipment is supported by the powered device.
3. Check whether the power sourcing equipment can support the maximum power consumption of the device.
4. 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.
5. Check whether the network cable or distribution frame is faulty.
6. 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.