I´ve suction cup mounted and J4 axis does not work. I am testing teaching & playback and when I push the buttons J4+ J4- R+ R- it does not turn, related numbers increase and decrease in DobotStudio but phisically there is no movement.
I´ve tried to fix it restarting the software and Magician, I did auto levelling, I checked firmware and it has the latest. Then in DobotSudio after all put Magician en home position, I selected Suction Cup in upper selection field, I opened Teaching & Playback, I pressed buttons J4+ J4- R+ R-, Magician J4 axis remains motionless.
What I can do?