i have a korg c-15 which is similar, remove the 2 screws on each corner at the rear of the piano, then at the front of the piano, under the keys is a metal bar, you will see a row of screws running through the bar into the base of the piano, remove those (about 10) screws, then lift the piano case from the front where the bar was, the whole case will lift and tilt backwards in one piece, its like lifting the bonnet/hood of your car.
trev.h., November 2009
