@Simon. The component you broke is actually called a <a href="http://en.wikipedia.org/wiki/Ceramic_resonator" rel="nofollow">resonator</a>. This is basically a crystal with two capacitors from the out two legs that meet in the middle, just like the 6MHz replacement crystal shown in the <a href="http://www.casperelectronics.com/images/finishedpieces/Casio%20SA/SA-X.jpg" rel="nofollow">schematic</a>. I just did a quick search for 22MHz resonators and couldnt find anything. I think your best option may be to install a 22MHz crystal (<a href="http://www.mouser.com/ProductDetail/CTS-Electronic-Components/ATS221B/?qs=sGAEpiMZZMsBj6bBr9Q9aSLORZG%2fS%2fcqIeG90BdQa90%3d" rel="nofollow">here's one</a> from mouser)with two 22pf caps making a 3rd central point.... like in the <a href="http://www.casperelectronics.com/images/finishedpieces/Casio%20SA/SA-X.jpg" rel="nofollow">schematic</a>.