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SA860
Service manual
Shugart SA860 Service Manual
Sigle/double-side half height diskette storage drive
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Also See for SA860
:
Owner's manual
(62 pages)
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
List of Figures
Section I Introduction
General Description
Specifications Summary
Performance Specifications
Functional Specifications
Physical Specifications
Reliability Specifications
Functional Characteristics
Electronics
Drive Mechanism
Positioning Mechanism
Read/Write Heads
Recording Formats
Functionaloperations
Power Sequencing
Drive Selection
Motor on
Track Accessing
Step out
Step in
Side Selection (Sa8600Nly)
Read Operation
Write Operation
Sequence of Events
Electrical Interface
Introduction
Signal Interface
Input Lines
Input Line Termination
Drive Select
Side Select (SA860 Only)
Direction Select
Step
Write Gate
Write Data
Motor on (Alternate Input)
In Use (Alternate Input)
External Write Current Switch (Alternate Input)
Output Lines
Track 00
Index
Sector (Hard Sector Only)
Ready
Read Data
Sep Data
Sepclock
Write Protect
True Ready
Disk Change (Optional Output)
Frame Ground
Physical Interface
Introduction
J2/P2 Connector
Theory of Operations
Generaioperations
Read/Write Operations
Read/Write Head
Write Circuit Operation
Read Circuit Operation
Drive Motor Control
Track Accessing
Stepping
Carriage Actuator
Actuator Control Logic
Track Zero Indicator
Stepper Timing
Section V Maintenance
Maintenance Equipment
Alignment Diskette
SA809 Exerciser
Special Tools
Diagnostic Techniques
Soft Error Detection and Correction
Write Errors
Read Errors
Seek Errors
Trouble-Shooting
Write Protect Inoperative
Adjustments
Side 1 Downstop Adjustment (SA860 Only)
Head Radial Alignment
Side 1 Downstop Adjustment
Motor Plate Mounting Screws
Read/Write Head(S) Azimuth Check
Azimuth Burst Patterns
Head Amplitude Check
Track 00 Detector Assembly
Track 00 Carriage Limiter
Index Sector Timing
Door Lock
Track 00 Carriage Limiter Clearance
Ejector/Bail
Diskette Stop Clearance
Stepper Motor
Bail Assembly Adjustment
Stepper Motor Adjustment
Removals and Replacements
Faceplate and Door Knob
Drive Motor Assembly
Top Plate Assembly
Spindle Hub Assembly
Drive Motor Assembly
PCB Assembly
Door Lock Assembly
Side 1 Arm Assembly (Sa8600Nly)
Head and Carriage Assembly
Clamp Hub Assembly
Bail Assembly
Track 00 Detector
Index/Sector LED Assembly
Index/Sector Detector Assembly
Head Radial Alignment
Schematic Diagram. PCB 25227 (4 Sheets)
Logic Equivalent PIN 16271. Location U13
Logic Equivalent PIN 51420. Location U14
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Owner's Manual
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Summary of Contents for Shugart SA860
Page 3
This Document was scanned and contributed by: Barry A. Watzman [Note that an extra section on “jumpers” has been added at the end of the document. This was not originally in the service manual and was taken from the OEM manual.]...
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Sa810
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