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JU-475-4
Service manual
Panasonic JU-475-4 Service Manual
Flexible disk storage drive
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Service manual
(34 pages)
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Service manual
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Service manual
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Contents
Table of Contents
Troubleshooting
Table of Contents
Table of Contents
1 Introduction
2 Models and Model Numbers
Inch FDD Series
3 Special Tools
4 Outline of Maintenance
Alignment Diskette
Exerciser
5 Diagnostic Procedures
Error Symptom Recognition
Soft Error Detection and Correction
Write Error
Read Error
Seek Error
Interchangeability Error
6 Trouble Analysis
Trouble Analysis Procedure
Troubleshooting Flow Chart
Trouble Analysis Table
7 Preventive Maintenance
8 Specifications
9 Adjustments and Verifications
Motor Speed Verification (Index Period)
Write Protect Verification
Head Output Verification
Output Modulation Verification
Resolution Verification
Radial Alignment Verification and Adjustment
Azimuth Verification
Index Burst Verification and Adjustment
Track 0 Sensor Adjustment
Asymmetry Verification
10 Test Points
11 Panasonic Alignment Diskette
12 Removals and Installations
PCB Removal and Installation
Front Plate and Handle Removal and Installation
Track 0 Sensor Removal and Installation
Collet Assembly Removal. Installation and Adjustment
Clamp Assembly Removal and Installation
Write Protect Sensor Assembly and Index Sensor Assembly Removal and Installation
Cartridge Guide Assembly Removal and Installation
Stepper Motor Assembly Removal and Installation
Head Carriage Assembly Removal and Installation
Drive Motor Removal and Installation
LED Assembly Removal and Installation
Lifter Unit Removal and Installation
Media Lifter Removal and Instahation
Media Sensor Assembly Removal and Installation
13 Exploded View
14 Replacement Parts List
15 Replacement Parts List for Pcb
16 Schematic Diagram
17 Circuit Board
Quick Links
1
Introduction
2
Models and Model Numbers
3
Inch Fdd Series
4
Specifications
5
Schematic Diagram
6
Circuit Board
ORDER NO. MSD891122000
ervice Manual
Flexible Disk Storage Drive
JU-475-4
Panasonic
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Table of Contents