Hi Tom and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, it would appear that either the "arm" has come off (most likely) or a guide pin has moved away from its normal position in the cam groove (least likely). Please click HERE. Parts availability and cost may be viewed HERE.
Still, please try calling / inquiring 1.***-***-****
Have you tried calling 1.***-***-****?
There is no listing for a Pioneer authorized Service Center in New York City hence the above number. Listing for Service Centers are only for Bronx County, Brooklyn, New York County, Putnam County, Queens and Staten Island.