If I remember right, you have to remove 4 screws on the top and 4 on the
sides, that is the side with the speaker on it. I think you have to move
the speaker out of the way to install the voice board, but it has been a
while since I've done that. It isn't all that difficult.
HTH
73
Butch
WA0VJR
Node 3148
Wallace, ks.