Copyright © 2007 Heathkit Company, Inc. All Rights Reserved PC Fundamentals Presentation 16 Presentation 16 – – The Floppy Disk The Floppy Disk Drive Drive
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Copyright © 2007 Heathkit Company, Inc. All Rights Reserved
PC Fundamentals
Presentation 16 Presentation 16 –– The Floppy Disk The Floppy Disk DriveDrive
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ObjectivesObjectives
At the end of this presentation, you will be able to:
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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.
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34-Wire Ribbon Cable34-Wire Ribbon Cable
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Mother Mother board board
connectorconnector
3.5-inch3.5-inch
Twisted wiresTwisted wires
5.25-inch5.25-inch
3.5-inch3.5-inch
5.25-inch5.25-inch
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A Common 34-Pin Connector forA Common 34-Pin Connector for3.5-Inch Floppy Disk Drives 3.5-Inch Floppy Disk Drives
Cut-outCut-out Cut-outCut-outKeyKey
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Connectors for 5.25-inch drivesConnectors for 5.25-inch drives
Connectors for 3.5-inch Connectors for 3.5-inch drivesdrives
Drive ADrive AConnectorsConnectors
Drive BDrive BConnectorsConnectors
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Rear View of 3.5-Inch Drive...Rear View of 3.5-Inch Drive...Rear View of 3.5-Inch Drive...Rear View of 3.5-Inch Drive...
DataDataCableCable
PowerPowerCableCable
8530C7StripeStripe
SideSide
Yellow Wire = 12 VoltsYellow Wire = 12 Volts
Red Wire = 5 VoltsRed Wire = 5 Volts
Black Wires = GroundBlack Wires = Ground
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1 21 2
DS 1DS 1DS 2DS 2DS 3DS 3
Plug and PlayPlug and Play
NO jumpersNO jumpers
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Most CommonMost CommonInstallation ProblemsInstallation Problems
Most CommonMost CommonInstallation ProblemsInstallation Problems
Control cable backwardsJumpers on legacy drives wrong
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Having problems reading or Having problems reading or writing to disks?writing to disks?
Having problems reading or Having problems reading or writing to disks?writing to disks?
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DC
AC
V OFF1000
200
20
2
200m
20M2M
200k20k
2k
200
A
200µ
20m2m
200m10A
V COM mA 10A
K
Use VOM to Use VOM to check check
continuitycontinuity
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Spend $5.95 for a new cableSpend $5.95 for a new cableSpend $5.95 for a new cableSpend $5.95 for a new cable
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Common Floppy Disk Drive Common Floppy Disk Drive Troubleshooting ProblemsTroubleshooting Problems
Common Floppy Disk Drive Common Floppy Disk Drive Troubleshooting ProblemsTroubleshooting 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
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Can’t Read Floppy DiskCan’t Read Floppy DiskCan’t Read Floppy DiskCan’t Read Floppy Disk
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One of Several Error Messages...One of Several Error Messages...One of Several Error Messages...One of Several Error Messages...
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Sometimes Retry Works...Sometimes Retry Works...Sometimes Retry Works...Sometimes Retry Works...
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Remove and Reinsert DiskRemove and Reinsert DiskRemove and Reinsert DiskRemove and Reinsert Disk
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Backup An Intermittent DiskBackup An Intermittent Disk
ASAPASAPBackup An Intermittent DiskBackup An Intermittent Disk
ASAPASAP
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HDHD
Favorite Favorite ProgramProgram
Hea
thki
t
Edu
catio
nal
Sys
tem
s
Spilled Liquid on DiskSpilled Liquid on DiskSpilled Liquid on DiskSpilled Liquid on Disk
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Can’t Read or Write to DiskCan’t Read or Write to DiskCan’t Read or Write to DiskCan’t Read or Write to Disk
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Error message at boot-up?Error message at boot-up?Error message at boot-up?Error message at boot-up?
Controller card or circuitry failureCable problemDead disk drive
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Clean Read/Write Heads...Clean Read/Write Heads...Clean Read/Write Heads...Clean Read/Write Heads...
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Try a Different DiskTry a Different DiskTry a Different DiskTry a Different Disk
HHDD
Win 98Win 98Boot DiskBoot Disk
HHDD
Win 98Win 98Boot DiskBoot Disk
HHDD
Win 98Win 98Boot DiskBoot Disk
HHDD
Win 98Win 98Boot DiskBoot Disk
HDHD
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Format a floppy disk in the drive Format a floppy disk in the drive and see if another drive can read it.and see if another drive can read it.Format a floppy disk in the drive Format a floppy disk in the drive
and see if another drive can read it.and see if another drive can read it.
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Nicked Ribbon CableNicked Ribbon Cable
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HDHD
Floppy Disk Floppy Disk Drive Test Drive Test Software Software ProgramProgram
Floppy Drive test programs Floppy Drive test programs are available...are available...
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Worth testing these?Worth testing these?Worth testing these?Worth testing these?
Rotational speedHead alignmentIndex timing lightDrive’s circuit boardEtc.
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Throw Drive Away...Throw Drive Away...Throw Drive Away...Throw Drive Away...
TrashTrash
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DC
AC
V OFF1000
200
20
2
200m
20M2M
200k20k
2k
200
A
200µ
20m2m
200m10A
V COM mA 10A2
Read Power Supply
Voltages
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Still no luck finding the R/W Still no luck finding the R/W problem? Time to swap...problem? Time to swap...
Still no luck finding the R/W Still no luck finding the R/W problem? Time to swap...problem? Time to swap...
ControllerCableFloppy Disk Drive
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Random Read/Write Problems...Random Read/Write Problems...Random Read/Write Problems...Random Read/Write Problems...
Change controller card (if there is one)Change cableChange driveCheck power supply
Floppy Drive makes Floppy Drive makes Grinding SoundsGrinding Sounds
Floppy Drive makes Floppy Drive makes Grinding SoundsGrinding 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.
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Phantom DirectoriesPhantom DirectoriesPhantom DirectoriesPhantom Directories
Warning!Warning!Warning!Warning!When you see a phantom directory,
do not use the drive until you fix the problem or data may be lost.
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Phantom Directory Solutions...Phantom Directory Solutions...Phantom Directory Solutions...Phantom Directory Solutions...
Check cable for breaks or nicksReplace cableReplace drive
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Computer Keeps Accessing Computer Keeps Accessing Floppy Drive even when No Floppy Drive even when No
Disk is in ItDisk is in It(Drives a User Crazy!)(Drives a User Crazy!)
Computer Keeps Accessing Computer Keeps Accessing Floppy Drive even when No Floppy Drive even when No
Disk is in ItDisk is in It(Drives a User Crazy!)(Drives a User Crazy!)
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The SolutionThe SolutionThe SolutionThe Solution
Copyright © 2007 Heathkit Company, Inc. All Rights Reserved
PC Fundamentals
EndEnd
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