William Levak wrote: > > > 1541B/1541C(PCB ASSY 250448) Newtronics D500 > > but I've heard of many that have an Alps mechanism, so add this line: > > Alps ? > > Commodore documentation says specifically that this version uses a > Newtronics mechanism which is not compatible with the older 1541's. > The 1541 drive series has different system boards that can handle only one > or two drive mechanisms. However, the boards may be put in any case, so > it is necessary identify the PCB ASSY number of the board that the drive > is attached to. The documentation also says that some board versions (I think 250442) can be configured with a single jumper to be compatible with either the Alps or Newtronics drive. I don't own an Alps equipped 1541C myself, both of mine have a track 0 sensor equipped Newtronics drive. But one of them has the older board installed (250442, IIRC). > > > 1541-II Newtronics D500 > > Chinon ? > > Digital System Inc DS-50F > > See Ville Jouppi's homepage for this, he has pictures of the mech. > > http://www.sci.fi/~vjouppi/digsys.html > > I have looked at these pictures. I cannot tell from the pictures if > this is the drive mechanism label. Various parts of drive mechanisms > have labels with serial numbers. I also cannot find a Digital Systems > Inc that makes floppy drives. > > The Newtronics D500 may be possible for this drive, but not very likely as > there was a newer version by this time. On the other hand, Commodore > frequently used older parts. > > Are these model numbers ones that you have seen yourself? I prefer > first-hand identifications. I have both the Newtronics and the Chinon version of the 1541-II, you have to ask Ville himself about the Digital Systems version. The D500 used in the 1541-II has different plugs than the D500 used in the 1541 and 1541C. Also some D500 that were used in the 1541C were equipped with the optical track 0 sensor. But all drives were labeled D500, AFAIR. I will open up the 1541-II again, just to be sure. Nicolas - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tcm.hut.fi.
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