Re: Re: K 2500R floppy problems Please help Roger J

You are absolutely correct. Using the SCSI bus will bypass the FDD bus altogether is a great solution. I don’t have a reluctance to go that route if needed. Since this is in fact a back up unit I’m not “dead in the water”. I am really trying to understand how this FDD bus functions. Is there a component, a FDD controller on the engine board or does all of that reside on the floppy drives integrated PCB? On K2500R schematics there does appear to be a chip that connects directly to the FDD data input on the engine board. I’m just searching for someone who really understands this FDD bus circuitry. Most service techs don’t repair beyond replacing the engine board. If the floppy and all cables are good and it still fails diagnostics they want to replace the engine board. I was hoping to get Roger J to comment on this. I’m sure he has experienced something like this in his years of servicing these units at the board level. Did the miss wired 12v DC fry something on the board? Could it be software related to the OS or bootloader somehow being corrupted?

Thanks,

Richard

From: <[email protected]> on behalf of "[email protected] [KurzList]" <[email protected]>
Reply-To: "[email protected]" <[email protected]>
Date: Wednesday, May 1, 2019 at 4:29 PM
To: "[email protected]" <[email protected]>
Subject: [KL] Re: K 2500R floppy problems



I wonder why do you want to install a floppy drive, when SCSI does all the job that floppy offer to the Kurzweil, and has larger capacity and reliabilty... Think about the advantages of installing a 3.5" SCSI Drive (zip., Jaz, mo) or a Scsi2sd. That makes floppy drive useless. Just a suggestion...