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4171
Service manual
MAI Basic Four 4171 Service Manual
5-1/4 inch fixed media disk drive
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Contents
Table of Contents
Bookmarks
Table of Contents
Page Status
Table of Contents
List of Figures
List of Tables
General Description
Mechanical Assembly
Printed Circuit Board Assembly (PCBA)
Spindle Motor Assembly
Heads and Disks
Air Filtration System
Read/Write and Control Electronics
Power Supply
Disk Drive Specifications
DC Power Connector
Installation
Introduction
Unpacking Instructions
Space Requirements
Mounting
Disk Drive Mechanical Dimensions
Disk Drive Mounting Dimensions
Power Requirments
Interconnecting Cable Connections
Motor Start Current Requirements
DC Power Connector
Frame Ground Connector
Connectors
Interface Connectors
Connector J1 Dimensions
Connector J2 Dimensions
Control Cable Termination
Options
Drive Address Selection Option
Write Protection Option
Ventilation
Disk Drive PCBA
Jumper Block
Pin Numbers
Functional Description
Introduction
Operational Description
Spindle Motor Operation
Spindle Motor Control Block Diagram
Spindle Motor Hall Sensors Relationships
Start Mode
Spindle Motor Current Profile
Run Mode
Servo System Operation
Servo Circuitry
Servo Pattern
Read/Write Channel Operation
Write Function
Read Function
Read Function Timing Diagram
Write Gate
Write Function Block Diagram
Power-Up Sequencing
Power down Operation
Interface Description
Control Signal Interface
Control Signal Driver/Receiver Combination
Jl/Pl Connector Pin
Control Input Signals
General Step Timing
Control Output Signals
Write Fault
Index Timing
Data Interface
General Description
General Timing Requirements
Data Line Driver/Receiver Combination
J2/P2 Connector Pin Assignments
MFM Write Data
MFM Write Data Timing
MFM Read Data
Format Description and Examples
ST506/412 Format
Address Marks
Gap Length Calculation
Sector Interleaving
Maintenance
Introduction
Preventive Maintenance
Cleaning the Disk Drive
Removal/Replacement Procedures
Introduction
Disk Drive Removal/Replacement/ Installation
Series 2000 Systems
General Procedures
Series 7000 Systems
Disk Drive Removal/Replacement/ Installation
Disk Drive Installation - Series 7000 Systems
Series 7000 Systems
Removal /Replacement of Disk Drive PCBA
Illustrated Parts Lists
Introduction
Index of Assemblies
Printed Circuit Board Assembly (P/N 59055)
Integrated Circuits
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APRIL, 1986
008083-010
MAI
Basic Four®
5-1/4
Inch Fixed
Media
Disk
Drive
(Machine Types
4171/4120/4326)
Service
Manual
M8083A
/kh^^BasicFoun
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Related Products for MAI Basic Four 4171
MAI Basic Four 4399
MAI Basic Four 4398
MAI Basic Four 4108
This manual is also suitable for:
4120
4326
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