This is a tutorial on how to open up the keyboard and how to replace contact rubber strips beneath the keybed. You can also follow the protocol in order to gain access to the interior of the keyboard if you wish to perform some repairs. This is a very easy process which will save you both money and time.
1) Place your keyboard on a soft surface, make sure the pitch bend is not compressed down; it would be a good idea to place the keyboard on a bed and have the pitch bend outside the edge of the bed so that it doesn’t touch anything.
2) Unscrew the black screws from the base, 2 black screws behind the wooden panels and unscrew the 3 screws on each cheek (beneath the wooden panels).
3) Unscrew the 16 screws that hold the keybed, located at the back of the keyboard.
4) Carefully turn the keyboard over on its back and lift the upper case, it should open up like a clamshell hinged at the back. To do this, gently lift up the upper case from the wooden panels.
5) Once you gain access to the interior, you will notice a short green and yellow wire towards the left corner bolted onto the inside of the base and attaches to the keybed. Unbolt and remove this wire so you can lift the keybed from its place.
6) If you have broken keys, you can remove them individually by following this link : http://www.youtube.com/watch?v=JTnXZK4NaaU
7) Tilt the keybed forwards to gain access to the rubber contact strips by lifting the keybed and gently tipping it forwards. You will find contact boards screwed onto the back of the keybed, unscrew them in order to remove the contact rubber strips. Don’t unscrew all the boards except the ones behind the faulty contact strips. Once you have removed the contact boards, gently peel off the faulty strip. If it has a small tear, you must replace it with a new one ($5 USD), if it isn’t torn you can clean it from the dust and put it back in place and re-screw the screws back in place.
Assemble the keyboard back together first by screwing the keybed back in place (I would suggest placing the keyboard on a keyboard stand and screwing from under the keyboard), then re-screw the base and sides. This is the only method that is achievable for the PA2X PRO, other models might differ depending on the shape and internal structure of the keyboard.
I'll post some pics if i can upload them.
