The investigation was based on the assessment of the available information including pictures of the affected device.Based on the investigation the reported issue could be verified and an old version of the locking element was identified as root cause of the reported event.This locking element did not engage sufficiently in the corresponding groove due to the deviating geometry.Furthermore, excessive material abrasion was caused as the spring arm locking element moved out of its seat and thereby damaged the adjacent pin geometry.If the connection between spring arm and display support fails, the affected display support system may fall.If the falling display support system is held by the electrical cable connections, it possibly changes into a pendulum movement.The affected display mount and its ac3000 locking element was replaced at the customer site.In 2013/14 a field safety corrective action to inform the user of the risk of using the old version of the locking element in a safety notice which clearly points out a replacement.This is the first occurrence after closure of the field action in japan.
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