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Thread: TEAC FD-55GFR 7193-U won't read or write

  1. #11
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    If the drive seeks/selects during the POST floppy test, it's connected.

    Is your GFR one that requires a terminator if it's the only drive? As has been mentioned, there are several varieties of the PCB. Earlier ones tend to have more options.

  2. #12

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    Two drives are supported by the BIOS so I don't see why it wouldn't work.

    Right now, the 3.5" drive is at the end of the cable (A: ) and TEAC is second (B: ).

    I used q-tips and alcohol to clean the heads as well as the sensors.

    I'll make a decent pic of the jumpers later today.

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    The Geek In Me - my computer blog

  3. #13
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    Spindle turning (I see nothing mentioned) ?

  4. #14

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    Quote Originally Posted by Half-Saint View Post
    I used q-tips and alcohol to clean the heads...
    That's not nearly as effective or safe as the disk method. The head(s) can be damaged or mis-aligned by applying lateral pressure accidently. Also, with the disk inserted, the clamping pressure provides thorough cleaning and I've seen drives that required several attempts, even with the disk method, to achieve a useable drive. There is just no substitute for the correct tool.
    If you're looking for DS/DD or DS/HD 3" or 5" floppy disks, PM me. I've got some new, used, and factory over-labeled disks for sale.

    There is a crack in everything. That's how the light gets in. -- Leonard Cohen
    ☞ Time flies like an arrow; fruit flies like a banana.

  5. #15
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    Quote Originally Posted by Stone View Post
    That's not nearly as effective or safe as the disk method. The head(s) can be damaged or mis-aligned by applying lateral pressure accidently. Also, with the disk inserted, the clamping pressure provides thorough cleaning and I've seen drives that required several attempts, even with the disk method, to achieve a useable drive. There is just no substitute for the correct tool.
    In my experience, q-tips and alcohol are more effective than cleaning diskettes. That said though, for me, there is a time and place. If I suspect that the heads are lightly dirty, I certainly do not want to waste time opening up the computer and then removing the floppy drive then possibly (depending on make/model) opening up the drive. I am going to use a cleaning diskette, which as you pointed out, also reduces the risk of damage. I like doing things the easy way.

    But if I am confident that very dirty heads are the problem cause (i.e. drive was working minutes ago, and failed as soon as a floppy from a newly opened box was used), and one or more uses of a cleaning diskette does not appear to be achieving anything, then I am 'going in' with the q-tips and alcohol.

  6. #16

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    Quote Originally Posted by modem7 View Post
    But if I am confident that very dirty heads are the problem cause (i.e. drive was working minutes ago, and failed as soon as a floppy from a newly opened box was used),...
    This is a scenario that I have encountered over and over, hundreds of times.

    Quote Originally Posted by modem7 View Post
    ...and one or more uses of a cleaning diskette does not appear to be achieving anything,...
    But this is something I haven't experienced. I have always had 100% success with the disk method, even if it took repeated attempts in some cases. But normally, one brief pass with the cleaning disk results in a fully functioning drive once again, in less than one minute, with no work or sweat. IOW, I have never had to remove or open a floppy and manually use a Q-tip on it.
    If you're looking for DS/DD or DS/HD 3" or 5" floppy disks, PM me. I've got some new, used, and factory over-labeled disks for sale.

    There is a crack in everything. That's how the light gets in. -- Leonard Cohen
    ☞ Time flies like an arrow; fruit flies like a banana.

  7. #17

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    Quote Originally Posted by modem7 View Post
    Spindle turning (I see nothing mentioned) ?
    Yes, the spindle is turning.

    DSC_0207.jpg
    The Geek In Me - my computer blog

  8. #18
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    Okay, I see nothing wrong with your jumper settings. Again, let's see what IMD says about the drive. I assume that you have a formatted disk to test with (density doesn't matter)? And you have a spare blank floppy to check writing functions with?

  9. #19

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    Quote Originally Posted by Chuck(G) View Post
    Okay, I see nothing wrong with your jumper settings. Again, let's see what IMD says about the drive. I assume that you have a formatted disk to test with (density doesn't matter)? And you have a spare blank floppy to check writing functions with?
    I mostly have DS/DD floppies but I also have a few HD floppies. I can format them on a 486 that has both, 5.25" and 3.5" disk drives.

    Can you give me some concrete instructions regarding the use of ImageDisk. I installed it and messed about but couldn't figure out much.

    Thanks.
    The Geek In Me - my computer blog

  10. #20
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    The instructions for IMD are actually pretty good if you read through them.

    The important thing to remember is that IMD works through the hardware directly and doesn't care what your BIOS or operating system says.

    I'd start with formatting up a disk on your 486 (data doesn't really matter) and using IMD to see if you get anything using the alignment test. It could be that the alignment of the Teac is simply borked and the heads aren't where they think they are. Also, using the same disk, try a "Test RPM" operation. Either will let us know if *anything* is being read.

    If you strike out on that one, try a format operation; since you have DSDD disks, you'll want to format two sides, MFM, 300Kbps, 9 sectors of 512 bytes for 80 cylinders, interleave 1. See if anything gets written to the floppy.

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