I have one of these, also have the user manual and service documents.
Love the keyboard - it was before its time. I bought it in the mid 1990s.
Apr 09, 2010 Rating
clicking notes on keyboard by: David Dvorak
My piano, PR 303, has been out of service because the notes on the keyboard, when struck, make a clicking sound on lifting after note struck. I don't know if this is a serious recurring problem, or if it can corrected. How can I get an answer to this problem?