Preface
This publication contains
the
information needed
to
service and maintain
the
IBM
3278
Display Station
Models 1, 2, 3, 4,
and 5. Part numbers for
the
usually needed field replaceable units (FRUsI are
given in Chapter
4;
keyboard assembly FRUs are
given
in
paragraph 6.7 (Chapter
61.
Additional in-
formation on
the
ordering
of
parts
is
contained
in
the
IBM 3278 Display
Station
Parts Catalog, order
number
S126-0020.
Organization
This
publication has seven chapters:
• Chapter 1
is
a brief introduction
to
the
3278
and
to
the
maintenance plan for
the
3278.
• Chapter 2 contains
the
maintenance analysis pro-
cedures (MAPs).
• Chapters 3 through 7 contain reference material
that
supports
the
MAPs.
Appendix A, Glossary, defines terms used
in
this
publication.
Starting Point
The starting point for
all
failure isolation on
the
3278
is
MAP
00, Start/Restart
MAP.
SY27-2510-5
(1/81)
iii
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