Apple Lisa I/O board diodes

Hi folks, 'Decaying battery' panic led me to unearthing my Lisa 2/5 to check the state of the batteries on the I/O board since it hadn't been out of its box or powered up since 2005. Fortunately the damage is very minimal and is only restricted to track discolouration and external rotting of one particular diode which I can't find mention of on my schematics. Anyone with a 2/5 care to check their I/O board for me please? The diode is D8, just above the battery location. It's in the board in such a way as to make its markings pretty unreadable in the pictures I took before cleaning, but it's the only white diode in the machine and I'm guessing it might be a 5.6V 1N4734A based on what I can see. Fortunately it still works for now, 0.7V voltage drop. Pic of the board before cleaning is at http://www.binarydinosaurs.co.uk/LisaIOBoard.jpg Cheers! -- Adrian/Witchy Binary Dinosaurs creator/curator Www.binarydinosaurs.co.uk - the UK's biggest private home computer collection?