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Troubleshooting Guidelines for Hardware
- Device Structure: A Noise Is Heard When the Device Is Shaken
- Device Structure: Network Cables Cannot Be Tightly Inserted into Ethernet Ports
- Power Supply: The AC Power Module Is Faulty
- Power Supply: The Device Fails to Be Powered On
- Power Supply: The Power Indicator on the Device Is Steady Red
- Device Power-On: The AC Can Be Powered On but Cannot Be Started, and No Information Is Displayed on the Console Port
- Device Power-On: The AC Can Be Powered On with Information Displayed on the Console Port, but Cannot Be Started
- Device Power-On: The Maintenance Terminal Does Not Display Anything Or Displays Garbled Characters
- Device Power-On: The Device Restarts Unexpectedly or Repeatedly
- Device Power-On: An AP Cannot Be Powered On or Fails to Start After Power-On
- Optical Module: Typical Optical Module Troubleshooting Procedure
- Optical Module: The Device Cannot Display Any Optical Module Information but Services Are Running Normally
- Optical Module: The Transmit Power of an Optical Module Is Low
- Optical Module: An Optical Module Does Not Send Light Signals
- Optical Module: The Transmit Optical Power of an Optical Module Is in the Normal Range, but Many Packets Are Dropped Due to Bit Errors on the Optical Interface
- Port: Electrical Ports on the AC Cannot Go Up
- Port: Optical Ports on the AC Cannot Go Up
- Port: After an Optical Fiber Is Inserted into an Optical Port on the AC, the Optical Port Cannot Go Up
- Port: Electrical Ports on an AP Cannot Go Up
- Port: Optical Ports on an AP Cannot Go Up
- PoE: The AC Cannot Supply PoE to APs
- PoE: An AP Cannot Be Powered On Using PoE
- Memory: Failed to Write Data to the SD Card or USB Flash Drive on the AC