Korg Poly800/EX800 Users

Could you please tell me the value of D2 for the poly 800 , I fried 
the diode using the wrong adaptor. The schematics arent much help ,I 
cant read the value . I think it says S R 1K but I could be wrong . 
The synth still works with the batteries . Unforttunatly it refuses 
to accept patch loading , something to do with the blown diode I 
think. Anyway thanks in advance.