Patches and discussion for Ensoniq VFX family

Hi, I have quick question. How do you shut the aftertouch off an 
Ensoniq SD-1? I have a key that is giving full after touch unless I 
hold it half-way down. I would like to shut off the aftertouch until I 
have the board serviced. Any advice where the option is located would 
be appreciated. 

 

Thanks 

Marty