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EVO Lite 640T Enterprise v1.0.2

7.3 Troubleshooting Guide

Update and Maintenance · Source PDF pages 143–146

EVO Lite 640T Enterprise · SE V2 controller · v1.0.2

1. The remote controller cannot power on: PDF p. 143

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 p. 143

Check whether the ambient temperature is suitable, as low temperatures can affect battery output performance, resulting in a power-on failure. PDF p. 143

If the remote controller was accidentally powered off during an update, it may not power on normally. In this case, contact Autel Robotics. PDF p. 143

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 p. 143

2. The aircraft cannot power on:

PDF p. 143

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 p. 143

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 p. 143

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 p. 143

Check whether the ambient temperature is suitable, as low temperatures can affect battery output performance, resulting in a power-on failure. PDF p. 143

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 p. 143

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 p. 143

3. The aircraft reports a fault during startup self-check:

PDF p. 144

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 p. 144

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 p. 144

4. There is no response from the remote controller when matching it with the aircraft:

PDF p. 144

Confirm that the distance between the aircraft and the remote controller is within 50 centimeters. PDF p. 144

Check whether there is a metal object, mobile device, signal interference device, or another remote controller nearby. PDF p. 144

5. After the aircraft powers on, the motors do not start:

PDF p. 144

Check whether the remote controller is paired with the aircraft. PDF p. 144

Check whether the command sticks of the remote controller are functioning correctly and whether the remote controller has been correctly calibrated. PDF p. 144

Check whether the aircraft's battery has sufficient power. PDF p. 144

Check whether the aircraft's compass has been correctly calibrated. PDF p. 144

If none of the above conditions apply, it may be a hardware failure of the aircraft itself. In this case, contact Autel Robotics. PDF p. 144

6. After the motors start, the aircraft does not take off:

PDF p. 144

Check whether the aircraft is in a No-Fly Zone. PDF p. 144

Check whether the aircraft is placed on a flat surface. PDF p. 144

Check whether there are obstacles near the aircraft and whether the obstacle avoidance system of the aircraft is enabled. PDF p. 144

7. The aircraft has shortened flight time:

PDF p. 144

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 p. 144

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 p. 144

8. The remote controller has unstable image transmission (e.g., image lag, image loss, or frequent disconnection):

PDF p. 144

Check whether the remote controller's antennas are securely connected and whether they are adjusted to an appropriate direction. PDF p. 144

Check whether there is any strong magnetic field or signal interference source near the aircraft and remote controller. PDF p. 144

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 p. 144

9. The gimbal camera automatically turns off during recording:

PDF p. 144

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 p. 144

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 p. 144

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 p. 145

10. When the aircraft is flying beyond the visual line of sight, image transmission fails: PDF p. 145

Enable auto-return to let the aircraft return to the home point. PDF p. 145

11. What precautions should I follow when using the omnidirectional visual sensing system? PDF p. 145

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 p. 145

When flying, pay attention to the surrounding environment and safety prompt messages of the flight application. PDF p. 145

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 p. 145

12. The accurate landing/landing protection function cannot work properly: PDF p. 145

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 p. 145

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 p. 145

13. The omnidirectional visual sensing system cannot work properly: PDF p. 145

Restart the aircraft and check whether the system can work properly this time. PDF p. 145

Check whether the ambient light illuminance is suitable for the operation of the visual sensing system. PDF p. 145

14. When recording video during flight, the image tilts: PDF p. 145

Place the aircraft horizontally and keep it stationary. Use the "Gimbal Calibration" function in the flight application to calibrate the gimbal. PDF p. 145

If the problem persists, adjust the gimbal according to the instructions described in the “Gimbal Adjustment” section. PDF p. 145

15. The camera lens of the aircraft is dirty: PDF p. 145

Please use dry soft cloth to clean the lens gently. PDF p. 145

16. The aircraft or remote controller experiences unexpected shutdown during firmware updates: PDF p. 145

Restart the device. If it can power on normally, make sure that the device is sufficiently charged before proceeding with the update. PDF p. 145

If the device cannot power on, contact Autel Robotics. PDF p. 145

17. Restore the factory setting of the remote controller: PDF p. 145

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 p. 145

important data before the resetting operation. PDF p. 146

18. Forcefully restart the remote controller after lag: PDF p. 146

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 p. 146

Restarting the remote controller during flight will trigger the lost action of the aircraft. PDF p. 146

19. For safety concerns, please do not insert unknown USB device of other external device to the aircraft PDF p. 146

Technical content and illustrations: Autel Robotics. Digital navigation and presentation: SkyFlow.

Source: EVO Lite Enterprise Series Aircraft User Manual v1.0.2. Physical PDF pages 143–146. Open source document

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