Floppy Drive stepper motor

I have been trying to run the stepper motor of a floppy drive(without removing it from the drive). I have given the appropriate 12v, ground and 5v to the power connector. Then I have grounded pins 12 and 16 from the floppy drive, this makes the spindle motor run. But when I ground 18 and give pulses to pin 20 by interfacing it with the PC's parallel port, the stepper motor doesn't run.
 Kindly help me out.
Thanks,
Vidya
Vidya-RamadossAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

chicagoanCommented:
dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
Hmmm

There's probably a switch that needs to be activated, either a sensor that detects whether a floppy is in the drive or that the floppy drive door has been closed.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Hardware

From novice to tech pro — start learning today.