Question about Sony (MPF920-Z/131) Internal Floppy Drive

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Floppy light stays on and will not read/write floppies

Just resurrected old AT chassis with Sony MPF920-1 floppy drive in it and installed a new Gigabyte motherboard, quad core cpu, etc.

Used cable that came with motherboard--with the twist in it.

Installed XP Pro SP2. System says the drive is working, but the light stays on and I cannot read or write a floppy. I even found another drive which I substituted with the same result.

I notice that there is a jumper on the drive. Anybody know what that jumper is for? And, does anybody have a fix for my problem?

Thanks,

Lee in San Diego

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  • wise old owl Apr 30, 2008

    Thanks, oldnovii, for responding. I had just looked up the sony floppy drive on the web and found an installation guide. And, you were right on the money. I haven't hooked a cable up to a floppy for quite a while. I don't know if standards have changed or not, but what I found was that the new cable that came with the motherboard had the key on the connector on the wrong side of the connector and I just blindly plugged the connector so that the key matched the connector on the drive. But when I re-learned that pin 1 was closest to the power connector, I found that the cable was indeed plugged in backwards. So I had to 'force' the connector to go in with the key on the opposite side of the relief on the mating connector on the drive. That fixed the problem.

    I even went back and looked at some older cables I had laying around, and they are constructed the same way...strange...

    Thanks, again, for your help!

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It sounds like the floppy cable is hooked up backwards by the floppy drive. Take cable off at the floppy drive and turn it around and reconnect it. Let me know what happens.

Posted on Apr 30, 2008

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