Introduction; Models And Model Numbers; Inch Fdd Series; Special Tools - Panasonic JU-475-4 Service Manual

PART. I

1. INTRODUCTION

This service manual consists o f tw o parts. Part I covers maintenance description, adjustm ent
procedures, and trouble analysis and Part II covers disassembly and reassembly procedures, parts
list, and PCB circuits.
Part I encompasses maintenance instructions fo r all Floppy Disk Drive (FDD) models. Refer to the
highlighted applicable items, and perform maintenance w ork on the FDD.
Note : This service manuals is prepared fo r maintenance o f the FDD.
Do not use this manual fo rju d g in g pass or fa il criteria in inspections.
2.

MODELS AND MODEL NUMBERS

2.1

5.25inch FDD Series

5,25INCH FDD
3

SPECIAL TOOLS

The fo llo w in g special tools are used fo r FDD maintenance.
Tool
Exerciser
A lignm ent diskette
Data diskette
Oscilloscope (50 MHz)
Probe(10:1)
Frequency counter
*«- : Stand fo r the same as left.
Note:
48TPI
96TPI
Table 3 -1 Special Tools
Part No.
5.25 inch (48TPI)
JA-551/JU-455 JA-561 /JU-465
FDD-EXT-35
817-128 817-560
2D
JA-551
JU-455
JA-56X
JU-58X
JU-595
JU-465
J IM 7 5
5.25 inch (96TPI)
JU-595 /JU-475
*< -
*(fr~
2DD 2DD/2HD
JA-560
JA-561
JU-581
JU-585
Q uantity
1
1 ~2
1 ~2
1
3
1