If the arm moves but no variation of the signals is detected, replace the optical
sensor B7-B8 or B9-B10 their cables and if the problem is still present, the A12
board.
In addition if the movement is just in one verse check also the cable X66-X76
between CCU A11 board and A12 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).
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