Korg PA900 Quick Manual page 105

Insert the new battery (d) into the empty battery slot, being
5.
sure the positive (+) side is facing up. Be very careful not to
let it fall inside the instrument.
Replacing the clock backup battery
Replace the cover (b) to the original position. Attach the
6.
cover to the back of the instrument by using the fixing
screw (a).
101
Installation