# 7.3 Troubleshooting Guide Model: lite-640t · Manual v1.0.2 Canonical: https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide Source: https://drive.google.com/file/d/1yQTDKasKxbvfVdANOx9bmlPYml-2dkCE/view Updated: 2026-10-17 EVO Lite 640T Enterprise · SE V2 controller ![Tip](https://shop.skyflow.ca/manuals/evo-lite-640t-v1-0-2/87954aaa7bad2a411ce7dd3a.webp) [PDF page 143, block 4](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b4) 1. The remote controller cannot power on: [PDF page 143, block 5](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b5) Check whether the remote controller has sufficient power. If the battery level is too low, it may result in a power-on failure after shutdown. In this case, fully charge the remote controller and then power it on. [PDF page 143, block 6](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b6) Check whether the ambient temperature is suitable, as low temperatures can affect battery output performance, resulting in a power-on failure. [PDF page 143, block 7](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b7) If the remote controller was accidentally powered off during an update, it may not power on normally. In this case, contact Autel Robotics. [PDF page 143, block 8](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b8) If the remote controller has not been subjected to external impacts, liquid submersion, or other destructive behaviors and does not have any conditions mentioned above, it may have a hardware failure. In such cases, contact Autel Robotics. [PDF page 143, block 9](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b9) ## 2. The aircraft cannot power on: [PDF page 143, block 10](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b10) Check whether the smart battery has sufficient power. If the battery level is too low, it may result in a power-on failure after shutdown. In this case, fully charge the smart battery and then power the aircraft on. [PDF page 143, block 11](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b11) If the smart battery has sufficient power, check whether the battery makes proper contact with the aircraft's fuselage. Dirt or rust at the battery connector can lead to poor contact and must be cleaned before being re-inserted into the battery for power-on. [PDF page 143, block 12](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b12) Check whether there are any missing or damaged metal contacts at the aircraft battery connector and the smart battery connector. If yes, please contact Autel Robotics. [PDF page 143, block 13](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b13) Check whether the ambient temperature is suitable, as low temperatures can affect battery output performance, resulting in a power-on failure. [PDF page 143, block 14](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b14) If the aircraft or the smart battery is unexpectedly powered off during a firmware update, it may result in a power-on failure. In this case, contact Autel Robotics. [PDF page 143, block 15](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b15) When none of the above conditions apply, if the aircraft can power on after the smart battery is replaced, it may be a hardware failure of the smart battery; if the aircraft still cannot power on after the smart battery is replaced, it may be a hardware failure of the aircraft itself. In this case, contact Autel Robotics. [PDF page 143, block 16](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p143-b16) ## 3. The aircraft reports a fault during startup self-check: [PDF page 144, block 2](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b2) Check the gimbal camera. If the gimbal camera has no response, re-start the aircraft, if there is still no response, please contact Autel Robotics. [PDF page 144, block 3](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b3) If the gimbal camera successfully passes the self-check, but the aircraft still reports a fault, it may be a hardware failure of the aircraft. In this case, contact Autel Robotics. [PDF page 144, block 4](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b4) ## 4. There is no response from the remote controller when matching it with the aircraft: [PDF page 144, block 5](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b5) Confirm that the distance between the aircraft and the remote controller is within 50 centimeters. [PDF page 144, block 6](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b6) Check whether there is a metal object, mobile device, signal interference device, or another remote controller nearby. [PDF page 144, block 7](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b7) ## 5. After the aircraft powers on, the motors do not start: [PDF page 144, block 8](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b8) Check whether the remote controller is paired with the aircraft. [PDF page 144, block 9](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b9) Check whether the command sticks of the remote controller are functioning correctly and whether the remote controller has been correctly calibrated. [PDF page 144, block 10](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b10) Check whether the aircraft's battery has sufficient power. [PDF page 144, block 11](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b11) Check whether the aircraft's compass has been correctly calibrated. [PDF page 144, block 12](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b12) If none of the above conditions apply, it may be a hardware failure of the aircraft itself. In this case, contact Autel Robotics. [PDF page 144, block 13](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b13) ## 6. After the motors start, the aircraft does not take off: [PDF page 144, block 14](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b14) Check whether the aircraft is in a No-Fly Zone. [PDF page 144, block 15](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b15) Check whether the aircraft is placed on a flat surface. [PDF page 144, block 16](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b16) Check whether there are obstacles near the aircraft and whether the obstacle avoidance system of the aircraft is enabled. [PDF page 144, block 17](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b17) ## 7. The aircraft has shortened flight time: [PDF page 144, block 18](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b18) During flight, factors such as low ambient temperatures, flying against the wind, air turbulence, and carrying a mount all may lead to a shortened operating time of the aircraft. [PDF page 144, block 19](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b19) Make sure that the smart battery has fewer than 200 cycles. During the normal use of the smart battery, the battery capacity naturally decreases over time. [PDF page 144, block 20](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b20) ## 8. The remote controller has unstable image transmission (e.g., image lag, image loss, or frequent disconnection): [PDF page 144, block 21](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b21) Check whether the remote controller's antennas are securely connected and whether they are adjusted to an appropriate direction. [PDF page 144, block 22](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b22) Check whether there is any strong magnetic field or signal interference source near the aircraft and remote controller. [PDF page 144, block 23](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b23) Confirm that the distance between the aircraft and the remote controller falls within the effective communication range and promptly reduce the flight radius if needed. [PDF page 144, block 24](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b24) ## 9. The gimbal camera automatically turns off during recording: [PDF page 144, block 25](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b25) Do not immediately remove the microSD card from the aircraft. Instead, restart the camera and wait for the video file to be stored as much as possible. [PDF page 144, block 26](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b26) Check whether the memory of the microSD card is full; if it is, replace it with a new microSD card or transfer the media files. [PDF page 144, block 27](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p144-b27) Check whether the gimbal camera is securely connected to the aircraft. If the gimbal camera is not securely locked during installation, the gimbal camera connector may become loose due to flight vibrations, leading to poor contact and thus malfunctions. [PDF page 145, block 2](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b2) 10. When the aircraft is flying beyond the visual line of sight, image transmission fails: [PDF page 145, block 3](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b3) Enable auto-return to let the aircraft return to the home point. [PDF page 145, block 4](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b4) 11. What precautions should I follow when using the omnidirectional visual sensing system? [PDF page 145, block 5](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b5) Before flying, make sure that the visual sensing camera lens is clean and not blocked (“Omnidirectional” means that the system can sense objects in six directions, including front, rear, left, right, up, and down). [PDF page 145, block 6](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b6) When flying, pay attention to the surrounding environment and safety prompt messages of the flight application. [PDF page 145, block 7](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b7) Obstacles can be detected by checking the texture of their surfaces. The detection function cannot work properly for objects with no texture, repeated texture, a surface of pure color, moving objects, or tiny objects. It also cannot work properly in a strong light or weak light environment. [PDF page 145, block 8](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b8) 12. The accurate landing/landing protection function cannot work properly: [PDF page 145, block 9](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b9) The accurate landing function can be implemented by the visual sensing lens on the rear of the aircraft. The camera detects the ground texture when the aircraft takes off or lands. [PDF page 145, block 10](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b10) However, if the ground does not have any texture or the visual sensing lens on the rear of the aircraft is damaged, this function cannot work properly. [PDF page 145, block 11](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b11) 13. The omnidirectional visual sensing system cannot work properly: [PDF page 145, block 12](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b12) Restart the aircraft and check whether the system can work properly this time. [PDF page 145, block 13](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b13) Check whether the ambient light illuminance is suitable for the operation of the visual sensing system. [PDF page 145, block 14](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b14) 14. When recording video during flight, the image tilts: [PDF page 145, block 15](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b15) Place the aircraft horizontally and keep it stationary. Use the "Gimbal Calibration" function in the flight application to calibrate the gimbal. [PDF page 145, block 16](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b16) If the problem persists, adjust the gimbal according to the instructions described in the “Gimbal Adjustment” section. [PDF page 145, block 17](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b17) 15. The camera lens of the aircraft is dirty: [PDF page 145, block 18](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b18) Please use dry soft cloth to clean the lens gently. [PDF page 145, block 19](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b19) 16. The aircraft or remote controller experiences unexpected shutdown during firmware updates: [PDF page 145, block 20](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b20) Restart the device. If it can power on normally, make sure that the device is sufficiently charged before proceeding with the update. [PDF page 145, block 21](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b21) If the device cannot power on, contact Autel Robotics. [PDF page 145, block 22](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b22) 17. Restore the factory setting of the remote controller: [PDF page 145, block 23](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b23) Tap the "Settings" app on the main interface of the remote controller, tap Backup & reset, and tap “Factory data reset” to restore the factory settings. Please backup [PDF page 145, block 24](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p145-b24) important data before the resetting operation. [PDF page 146, block 2](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p146-b2) 18. Forcefully restart the remote controller after lag: [PDF page 146, block 3](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p146-b3) Press and hold the power button on the right side of the remote controller for more than 6 seconds to forcefully power off the remote controller. [PDF page 146, block 4](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p146-b4) Restarting the remote controller during flight will trigger the lost action of the aircraft. [PDF page 146, block 5](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p146-b5) 19. For safety concerns, please do not insert unknown USB device of other external device to the aircraft [PDF page 146, block 6](https://shop.skyflow.ca/learn/autel/evo-lite-enterprise/manuals/evo-lite-640t-v1-0-2/7-3-troubleshooting-guide#p146-b6)