HP 3 1/2-Inch Flexible Disc Drive - User Manual

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SERVICE

MANUAL

HP's 3 1/2-Inch

Flexible

Disc

Drive

Service Documentation

Hewlett-Packard Greeley Division

700

Ave.

Greeley, CO 80634

Main Page

Table of Contents3
Section I the 3 1/2-Inch Disc Drive9
Chapter 1 General Information11
Introduction11
Description11
Maintenance and Handling11
Disc Drive12
Flexible Disc Media12
Disc Guard and Auto Shutter13
Initializing and Initializing Errors13
Handling Flexible Disc Media14
Write Protect17
Media Monitor17
Controls and Indicators18
Front Panel18
Rear Panel18
Chapter 2 3 1/2-Inch Drive Theory of Operation19
Introduction19
Electromechanical Components19
Drive Mechanism19
Head Positioning Mechanism19
Input Signal Descriptions21
Drive Electronics21
Output Signal Descriptions22
Drive Electronics Interface Timing23
Controller Assembly23
Interface Chip24
Flexible Disc Controller25
Loop Management25
Recording Format25
Media25
Tracks26
Recording26
Track Numbering26
Track Format26
Introduction29
Main Cover Replacement29
Front Panel Replacem1Ant30
Load Pad Replacement30
Drive Electronics Assetnbly Removal32
Introduction35
Selftests35
Power-On Selftest35
User Confidence Selftest (9121 Only)36
Service Selftest36
Adjustments37
Equipnlent Required37
Head Cleaning38
Motor Speed38
Head Compliance41
Load Pad Position and Head Load Force41
Read Ampliner Gain and Offset43
Other Checks45
Amount of Disc Access45
PLL Free-Run Frequency46
Section II 9121D/S47
Chapter 1 General Information48
Introduction48
Product Description48
Equipment Supplied48
Unpacking Your HP 9121D/S Disc Memories48
Technical Specifications49
Equipment Supplied51
Cleaning the Case52
Chapter 2 Installation54
Introduction54
Setting the Linf~ Voltahe Select Switches54
Setting the Line Voltage Select Switches54
Fuses55
Power Cords55
The HP-IB Interface56
Selecting the Device Address57
Controls and Indicators58
Applying Power58
Manual Shutter59
Auto Shutter59
Basic System Operation59
Write Protect Error on Initialization60
Data Errors60
Write Protect E.rror on Initialization60
Chapter 3 Interface Information62
Introduction62
Overview of the HP-Interface Bus62
Chapter 4 Troubleshooting66
Introduction66
Repair Philosophy66
Exchange Assemblies66
Non-Exchange Assemblies66
Support Packages Contents Lists66
Product Support Package (PSP)66
Field Support Inventory Package (FSI)66
Recommended Field Support Inventory66
Controller Electronics and Power Supply Assembly66
Power Supply67
Support Packages Contents Lists67
Product 'Support Package (PSP)67
Troubleshooting the Power Supply69
Controller Assembly69
Chapter 5 Assembly Access72
Introduction72
Safety Considerations72
General72
Safety Symbols72
Safety Earth Ground73
Before Applying Power73
Servicing73
Top Cover Removal75
Drive Removal75
Fan Removal76
Printed Circuit Assembly Removal76
Parts Lists76
Chapter 1 General Description81
Introduction81
Product Description81
Technical Specifications82
Equipment Supplied83
Unpacking Your HP 9133A Disc Memory84
Cleaning the Case84
Controller Assembly Reltioval98
Sheet Metal Housing Removal101
Drive Rem()Val101
HP 9133 Parts Lists101
Assembly Access101
Safety Earth102
Before Applying Power102
Chapter 1 General Description109
Introduction110
Product Description110
Technical Specifications110
Chapter Installation114
Introduction114
Setting the Line VOLTAGE SELECT Switch114
Fuse114
Power Cords114
Interfacing to Your System116
Selecting the Device Address116
The HP-IB Interface117
Chapter 3 Basic Operating Procedures118
Introduction118
Drive Operation118
Controls and Indicators118
Power-On Selftest119
User Confidence Selftest (Flexible Disc Drive)120
Additional Flexible Disc FAULT Indications120
Initial Power-On and Operating Procedure120
Initial Checkout121
Flexible Disc Procedures121
Flexible Disc Description and Write Protection121
Write Protect Error on Initialization122
Inserting and Removing the Flexible Disc122
Media Monitor123
Media Wear Indication123
Chapter 4 Troubleshooting124
Introduction124
Repair Philosophy124
Exchange Assemblies124
Support Packages Contents Lists124
Product Support Package (PSP) - 09121-67100124
Field Inventory Parts Package (FSI) - 09121-67197125
Controller Assembly125
Chapter 5 Assembly Access126
Introduction126
Safety Considerations126
General126
Safety Symbols126
Before Applying Power127
Servicing127
Assembly Designations129
Top Cover Assembly Removal129
Front Panel Assembly Removal129
Field Replaceable Units131
Parts List131

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HP 3 1/2-Inch Flexible Disc Drive Specifications

General

Brand	HP
Model	3 1/2-Inch Flexible Disc Drive
Category	Floppy Disk Drive
Language	English

HP 3 1/2-Inch Flexible Disc Drive - User Manual

Table of Contents

HP 3 1/2-Inch Flexible Disc Drive Specifications