optical sensor B6, its cable and if the problem is still present, the A13 board.
In addition if the movement is just in one verse check also the cable X54-X88
between CCU A11 board and A13 board and and finally replace the CCU A11
board
Technical Service additional information required
: try to reproduce the error
recording:
-
An audio-video with a global view of the chin rest movements
-
An audio-video with a bottom view of the chin rest motor linear system group
movement (removing the chin rest bottom cover).