MPC screen off centre...

Greetings friends,
I've done a wee bit of a search around and cant find any threads of websites that list a problem like this... so hopefully you guys can help.

Grabbed myself a cheap mpc 2000 in japan for $300 AUD, it was in great nick and I tested it in store. BUT THEN, the baggage handlers got to it...
The LCD seems fine, but I have no clue how to fix this - can anyone share some knowledge?

http://imgur.com/OmvT0i7
http://imgur.com/RkfZL8Q

Looks like the LCD has just slipped out from the LCD holder, I assume there may be a screw missing. Open it up and take a look, it will be very obvious how to fix it once you do that.