Siemens Microfloppy FDD100-5 Istruzioni operative

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SIEMENS

Floppy

Disk

Drive FDD100-5

•

MODEL

FDD100-5

IVIICROFLOPPy[TM]

FLEXIBLE

DISK

DRIVE

OPERATION

AND

MAINTENANCE

IVIANUAL

A22742-A

1005-X001-

*

-7630

MODEL

FDD1 00-5

FLEXIBLE

DISK

DRIVE

OPERATION AI\ID MAII\ITENANCE

A22742-A1005-X001-*-7630

REVISION

LEVEL

Revision

Letter Description Date

AOriginal Publication 3/79

iii

Model FDD100-5 Flexible Disk Drive

Section

Paragraph

TABLE

OF

CONTENTS

Page

GEI'JERAL DESCRIPTION

1.1

SCOPE

,

1-1

1.2 INTRODUCTION

1-1

1.2.1

Double Density

1-2

1.2.2 Daisy Chain Capability

1-2

1.2.3 Applications

1-2

1.2.4

Head

Characteristics

1-3

1.3 FEATURES

1-3

1.4 SPECIFICATIONS

1-4

2

INSTALLATION

AND INTERFACE

2.1

UNPACKING AND INSPECTION

2-1

2.2

INSTALLATION

2-1

2.3 INTERFACE

2-1

2.3.1 System Configuration 2-4

2.3.2 Electrical Connectors

2-5

2.3.3 Transmitter Characteristics

2-6

2.3.4 Receiver Characteristics

2-6

2.3.5 Terminator

2-7

2.4 INTERFACE SIGNALS

2-7

2.4.1

Input Control

Lines

2-7

2.4.2 Output

Lines

2-10

2.4.3 Data Lines

2-11

2.5 PROGRAM SHUNT MODULE

'"

2-12

2.5.1

HS

-

Head

Select Option 2-14

2.5.2

HM

-

Head

Motor Option 2-14

2.5.3 Single-Drive Conflguration 2-14

2.5.4 Multiple-Drive Configuration 2-14

2.6 OPTIONS 2-14

3OPERATION PROCEDURES

3.1

GENERAL

3-1

3.2 DISKETTE _

3-1

3.3 DISKETTE HANDLING

3-1

3.4 LOADING THE DISKETTE 3-2

3.5 WRITE PROTECT FEATURE 3-2

4THEORY

OF

OPERATION

4.1

FUNCTIONAL DESCRiPTION

4-1

4.1.1 Drive Select

4-1

4.1.2 Power-Up Mode

4-1

4.1.3

Head

Load

Signal Line (Option)

4-1

v

Section Paragraph

TABLE

OF CONTENTS (continued)

Page

44.1.4

4.1.5

4.1.6

4.1.7

4.1.8

4.1.9

4.1.10

4.1.11

4.2

4.3

4.3.1

4.3.2

Seek

Mode 4-3

Readl'Nrite

Head

4-3

Sensors

and

Switches 4-3

Write Mode 4-4

Erase

Mode 4-4

Read

Mode 4-4

Power-Down Mode 4-4

Spindle Drive

Motor

4-4

POSITIONING CHARACTERISTICS ,4-5

DATA

FORMAT

,4-5

Hard Sector Format 4-5

Soft

Sector Format 4-6

5

MAINTENANCE

5.1

5.1.1

5.1.2

5.1.3

5.2

5.3

5.3.1

5.3.2

5.3.3

5.4

5.4.1

5.4.2

5.5

5.6

5.6.1

5.6.2

5.6.3

5.6.4

5.6.5

5.6.6

5.6.7

5.6.8

5.6.9

5.6.10

5.6.11

5.6.12

5.6.13

5.6.14

5.7

5.8

RELIABILITy

5-1

Mean Time Between Failures

(MTBFl.

5-1

Mean

Time

To

Repair (MTTR)

5-1

Service

Life

5-1

DIAGNOSTIC

TECHN IQUES

5-1

ERROR RATES

'"

.,

"

..

5-2

Write

Error

Rate 5-2

Read

Error

Rate 5-2

Seek

Error

Rate

5-2

ERROR DETECTION

AND

CORRECTION 5-2

Write Errors

5-3

Read

Errors

5-3

ALIGNMENT

DISKETTE

5-3

REMOVAL

AND

REINSTALLATION

PROCEDURES

5-4

Front

Bezel

5-4

Drive

Motor

Assembly 5-5

Stepper

Motor

and

Lead

Screw 5-5

Head

and Carriage Assembly 5-6

Readl'Nrite Head-Load

Pad

5-6

Spindle Hub and Pulley Assemblies 5-6

Carrier Frame Assembly

5-7

Write Protect

Sensors

and Diskette Guide Assemblies

5-7

Index Sensor Assembly ..................................

..

5-8

Index LED 5-8

Track

00

Switch 5-9

Servo Control

PWB

5-9

Solenoid Assembly 5-10

Clutch Assembly 5-10

HEAD

AMPLITUDE

CHECK

5-11

ADJUSTMENT

PROCEDURES 5-12

vi