RL02 Question

Sorry to keep bothering you all with RL02 questions. I think I am nearly there. It seems my head cleaning in a warm bath of isopropyl alcohol was a success. I bought a tested RL02 pack and loaded it - no bad sounds, I can extend the heads all the way. So that's good. I have supposedly a working RL02K pack, and seemingly good heads. After I load a pack however, it goes into fault mode. Checking through the test points on my scope, there is no survo burst data until I push the heads 3-5mm further forward. So it seems to me that the heads are not loading far enough into the pack. I loosened the head alignment screws to move the heads all the way forward, tightened them back up, and tried loading the pack again. It stopped again, 3-5mm short of track 0. So moving the heads forward didn't seem to make any difference. I have tried a different control board, and read/write amplifier board, with no success. Has anyone else experienced this? Is there some sensor which I am not seeing? Thanks, Aaron. -- Aaron Jackson PhD Student, Computer Vision Laboratory, Uni of Nottingham http://aaronsplace.co.uk