The drum rotates, but the rotation is irregular or uneven

The problem here may be the belt and the motor. The most common is that the strap is loose, because it is loose for a long time, it is recommended that technicians continue to replace it, and it may be broken in a short time. Check whether clothing has been added after the program has started, or whether clothing is evenly distributed on the roller. The cause may be a rotational imbalance.