WP 34S printing scrambled text on HP82240B

[Paul Berger (Canada)]

That sensor that is on the underside of the circuit board that is grafted on looks like the sort that used for IrDA, and I wonder if the WCE written on the label may be for WindowsCE, if you had an older laptop with IrDA or a Windows CE handheld you could give that a try. I could take pictures of the board for you. There is a schematic of the A version at http://www.hpmuseum.net/document.php?hwfile=3610 I would not expect there to be a lot of hardware difference between the two versions.
Update:

Pictures of the front and back of the board may be found at https://picasaweb.google.com/10273141276...directlink The pictures are too big to be attachment. The board is a simple single sided board board which should make things easy. It would appear the only things missing, judging by your pictures, is the IR detector and a 3 leg 10uF capacitor immediately behind it. At first glance it does seem to be very similar to the A version. The only makings on the IR detector are 302 4Z.