1. Copyright © 2007 Heathkit Company, Inc. All Rights Reserved PC Fundamentals Presentation 16 – The Floppy Disk Drive

2. 2 Objectives At the end of this presentation, you will be able to:

3. 3 Recognize a floppy disk drive cable. Identify the type of connectors used on floppy drives. Identify several floppy drive problems and explain how to eliminate them.

4. 4 34-Wire Ribbon Cable

5. 5 Mother board connector 3.5-inch Twisted wires 5.25-inch 3.5-inch 5.25-inch

6. 6 A Common 34-Pin Connector for 3.5-Inch Floppy Disk Drives Cut-outCut-outKey

7. 7 Connectors for 5.25-inch drives Connectors for 3.5-inch drives Drive A Connectors Drive B Connectors

8. 8 Rear View of 3.5-Inch Drive... DataCable PowerCable 8530C7 StripeSide Yellow Wire = 12 Volts Red Wire = 5 Volts Black Wires = Ground

9. 9 1 2 DS 1 DS 2 DS 3 Plug and Play NO jumpers

10. 10 Most Common Installation Problems Control cable backwards Jumpers on legacy drives wrong

11. 11 Having problems reading or writing to disks?

12. 12 DC AC V  OFF 1000 200 20 2 200 m 20M 2M 200 k 20 k 2k 200 A µ 20m 2m 200m 10A V V  COMmA 10A  K Use VOM to check continuity

13. 13 Spend $5.95 for a new cable

14. 14 Common Floppy Disk Drive Troubleshooting Problems Can’t read floppy disk Spilled liquid on disk Can’t read or write to disk Random read/write problems Floppy drive makes grinding sounds Phantom directories Computer keeps accessing floppy drive even when no disk is in it

15. 15 Can’t Read Floppy Disk

16. 16 One of Several Error Messages...

17. 17 Sometimes Retry Works...

18. 18 Remove and Reinsert Disk

19. 19 Backup An Intermittent Disk ASAP

20. 20 HD Favorite Program Heathkit Educational Systems Spilled Liquid on Disk

21. 21 Can’t Read or Write to Disk

22. 22 Error message at boot-up? Controller card or circuitry failure Cable problem Dead disk drive

23. 23 Clean Read/Write Heads...

24. 24 Try a Different Disk HDHDHDHD Win 98 Boot Disk HDHDHDHD Win 98 Boot Disk HDHDHDHD Win 98 Boot Disk HDHDHDHD Win 98 Boot Disk HD

25. 25 Format a floppy disk in the drive and see if another drive can read it.

26. 26 Nicked Ribbon Cable

27. 27 HD Floppy Disk Drive Test Software Program Floppy Drive test programs are available...

28. 28 Worth testing these? Rotational speed Head alignment Index timing light Drive’s circuit board Etc.

29. 29 Throw Drive Away... Trash

30. 30 DC AC V  OFF 1000 200 20 2 200 m 20M 2M 200 k 20 k 2k 200 A µ 20m 2m 200m 10A V V  COMmA 10A 2 Read Power Supply Voltages

31. 31 Still no luck finding the R/W problem? Time to swap... Controller Cable Floppy Disk Drive

32. 32 Random Read/Write Problems... Change controller card (if there is one) Change cable Change drive Check power supply

33. Floppy Drive makes Grinding Sounds In some computers you can change the drive’s step rate in the BIOS. Your choices are 3, 6, 9, 12 or 15 ms.

34. 34 Phantom Directories

35. Warning!Warning! When you see a phantom directory, do not use the drive until you fix the problem or data may be lost.

36. 36 Phantom Directory Solutions... Check cable for breaks or nicks Replace cable Replace drive

37. 37 Computer Keeps Accessing Floppy Drive even when No Disk is in It (Drives a User Crazy!)

38. 38 The Solution

39. Copyright © 2007 Heathkit Company, Inc. All Rights Reserved PC Fundamentals End