Hi! Sometime ago some person emailed a question about PC88 error "scanner is dead". I have had this error on my PC88 for several years and had not enough time to check it by myself. I got this keyboard on the service once, but they did not find anything to repair. The memory battery has been changed but that is not the point. I assume there may be some cold contacts on the circuit boards, may be on power supply or something. Does any one have experiencies about this kind of issue? Br. Matti / Finland
Re: Kurzweil PC88 i have had the same problem and coud fix it press the buttons 1,2and 3 during power on and leave them within 2 seconds than you see in the lcd "Press <<< to reset Press >>> to diag" Press >>> to diagnose and you see Debug cpu test press the zone 3 button and the test will start on the right side of the display you see fail or pass if pass it is all right to step to the next test press a key for the midi uart test you need a midicable from out to in at least there will be a test of vgm port if you have none its fail otherwise 5 sinus tones will be performt and after every tone you have to qit with a key the same is for the sound test. in the diagnose program the scanner is testet if its pass its all right after the sound test the program ends and you have to switch out and on again after that it should work if the scanner test dont fails jochen ps please report your experience
Re: Kurzweil PC88 Hi Jochen! Thanks for your advice. In fact in the very beginning, when this problem appeared I did those steps you mentioned, those are in the manual also. Anyway, those did not help. But what is quite curious thing, the piano has been working now quite well. I tried again those steps, and every test goes through successfully. So, don't know what is the final reason. The piano has not been in very heavy use at all, only occasional playing when I have had suitable time. Will those errors come back if used more, transport it etc. One new thing I noticed, one of the keys seem to give full volume when pressing it. I noticed someone here adviced how to repair this kind of issue, I try to check it. Br. Matti
