1. The blade is offside off.
This failure mechanical cause is more likely, mainly because the device does not work.
First check whether the positioning is flexible and whether the spring is fatigue. At this time, the positioning should be fixed to make it flexibly or replace the spring.
Secondly, after checking, whether the spiny wheels and the worm are connected to whether it is disconnected. If it is disconnected, it is necessary to replace the connection.
If there is still a phenomenon, it may be because the tool is too long and heavy, and the elastic modulus should be replaced with a slightly larger positioning spring.
2. The blade rack is not in place (sometimes the position is suddenly stopped).
This failure is mainly due to sending a letter
The disc was misplaced with the elastic film contact, that is, the position of the knife signal signal gel wood dish is fixed.
First adjust the position of the sending disk and the elastic film and fix it.
If the failure is still not eliminated, it may be that the screw is loosened to loosen the screw, causing the location to move.