ASR33 selector magnet driver card

Well, I was tinkering around with my ASR33 today, and I must have supplied a little too much loop current to it, because it stopped running open. Normally, if nothing is connected to it, it rattles away, printing nothing. I had found in the past that if I connected the RX lines together, it stopped, and I was trying to supply it with a current so I could interface it to something, and it stopped rattling, and removing the current didn't make it go back to rattling. When you unplug it, it rattles a couple times as it loses power. I immediately assumed that I must have blown up one of the probably two or thee transistors in the entire device, so I pulled out the selector magnet driver card to have a look. The diode at the bottom of the card, CR2, is cracked apart! Also, I am noticing that R7 at the top of the card has managed to unsolder itself due to the heat it generates. What is a suitable replacement for CR2? It's hard to read seeming as though it is missing a chunk. CR1 looks to be the same - but I read it as a 1N4smudge3, which is rather hard to cross reference. I found the schematic in the manual, but not a parts list. I'll keep looking, but I figured I would ask the experts here. Unless this was some kind of coincidence, I think I need to double check my 20ma power supply. Thanks! -Ian