PART. I
1. INTRODUCTION
This service manual consists
of
two
parts, Part I covers
maintenance
description,
adjustment
procedures, and
trouble
analysis
and
Part
II
covers disassembly and reassembly procedures, parts
list, and
PCB
circuits.
Part I encompasses maintenance instructions
for
all Floppy Disk Drive
(FOO)
models. Refer
to
the
highlighted
applicable items, and
perform
maintenance
work
on
the
FOD.
Note:
This service manuals
is
prepared
for
maintenance
of
the
FOO.
Do
not
use
this
manual
for
judging
pass
or
fail
criteria
in
inspections.
2. MODELS
AND
MODEL NUMBERS
48TPI
-c
JA-551
JU-455
2.1
5.25inch
FDD
Series
Itlill
3.
SPECIAL TOOLS
96TPI
JA-56X
-c
JA-560
JA-561
JU-58X
-c
JU-581
. JU-585
JU-595
JU-465
~~~1~lgtl!l:l~111[
The
following
special
tools
are used
for
FDO
maintenance.
Table 3 - 1 Special Tools
Part No.
Tool 5.25 inch (48TPI)
ilil!llll!i!l!illill!III!!!I!!il!!I!!!!!I!II!!!II!II~1!lj!~I!f~I!!~!iIIJI!I!!!I!ll!!I!!!I!!I!!i!!!llil!!i!!!i!!!!~l!l!i!!!!!
Qua
ntity
JA-551/
JU-455
JA-561/
JU-465
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FOD-EXT-35Exerciser
Alignment
diskette
Data
diskette
Oscilloscope (50 MHz)
Probe(10:
1)
Frequency
counter
817-128
2D
817-560
2DO
1-2
1-2
3
Note:
*~:
Stand
for
the
same
as
left.
-1
-
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