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Thread: SF314 floppy drive issue

  1. #1
    Join Date
    Sep 2012
    Location
    Indiana, USA
    Posts
    425

    Default SF314 floppy drive issue

    I have been working with the drive from a SF314 external ST floppy drive. It's an Epson SM140A, double sided DD drive. The issue is it begins to stumble on reading a disk about half way through. I thought it was alignment, but it fails to format a disk in the same fashion. At about halfway in towards the hub, it begins to re-seek. This just gets worse the farther in it gets. It won't finish formatting any disk. It reads disks with the same limitation. At about hhalfway, it begins to re-seek, ending in an error message. I replace the electrolytics on the logic board, and substituted a know good power supply, but that didn't help.

    I'm hoping someone has overcome a similar situation and can shed some light on what's going on with the drive.

    Thanks

  2. #2
    Join Date
    Oct 2014
    Location
    near frankfurt/m, germany
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    Default

    Have you cleaned the mechanics and reoiled it carefully?

  3. #3
    Join Date
    Sep 2012
    Location
    Indiana, USA
    Posts
    425

    Default

    Indeed I have cleaned and lubed the relevant parts. I discovered last night that if I format a disk as single sided, it will complete without problems. It would seem that there is something up with the top head.

  4. #4

    Default

    yes i have same issue

  5. #5
    Join Date
    Oct 2014
    Location
    near frankfurt/m, germany
    Posts
    680

    Default

    Are you sure that it is a SF-314, or is it a SF-354? The 2nd is single sided only.

    Which drive mechanics is there? It could be some drives from Chinon or Epson.

  6. #6
    Join Date
    Sep 2012
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    Indiana, USA
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    Default

    I think it was an Epson, but it's definitely a 314. I have a 354 as well.

  7. #7
    Join Date
    Oct 2014
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    near frankfurt/m, germany
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    Default

    Exact model name of the Epson drive?

  8. #8
    Join Date
    Sep 2012
    Location
    Indiana, USA
    Posts
    425

    Default

    It has Epson embossed in the frame casting. There is a number printed on the back that looks like an Epson model number,SMD130A000 -02, but I'm unsure if it is. Google searches on that number are not definitive.

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