Manual

88 Chapter 6 Firmware Updates and Maintenance
EVO Max 4T User Manual
6.2.2 IMU Calibration
The IMU has been calibrated at the factory, and no user calibration is required under
normal conditions. If the acceleration and angular velocity of the aircraft are abnormal, please
follow the steps below to calibrate it.
1) After turning on the aircraft and the remote controller, click "Settings" > "IMU
Calibration" > "Start Calibration" in the main interface of the Enterprise App. When the
calibration process begins, the aircraft tail LED turns yellow and blinks.
2) Fold up the arms and place the aircraft flat on the ground.
3) Turn the aircraft over 180°, lay the aircraft facing up, and be careful not to bump the
upward-looking camera.
4) Put the left side of the aircraft flat on the ground.
5) Put the right side of the aircraft flat on the ground.
6) Fold the arms, turn the nose up, and be careful not to bump the rear camera.

Place the aircraft according to the Autel Enterprise App Tips, and keep the aircraft in a
static state.

Please place the aircraft on a flat ground, and do not move,
shut down or restart the
aircraft during the calibration process.

During IMU calibration, the gimbal will not work.
6.3 Aircraft Care and Maintenance
To ensure the best performance of EVO Max 4T, please carefully read and follow the
Maintenance References in this section.

Do not store the aircraft in a place with high humidity. If the aircraft accidentally falls into
water, do not turn on the power immediately.
This behavior will cause permanent
damage to the aircraft.

Autel Robotics recommends that you regularly check the various parts of the aircraft and
related products to see if they have been loosened, make abnorm
al noises or
malfunctioned due to strong impacts. If you have any questions, please contact Autel
Robotics technical support personnel or authorized dealers.

If you need to store or transport the aircraft for a long time, please ensure that the
protective cover of the gimbal is installed firmly, the propeller is removed, the arms are
folded, and the aircraft and related parts are accurately stored in the slots
inside the
rugged case to prevent damage to the internal electronic components. Devices, cameras,
sensors and other components cause damage.