Your keyboard also contains
your
display station's Problem Determination
Guide.
To
access the Guide, press the latch shown in Figure 3-1; the access
panel will spring open. Whenever you have a problem with
your
display station,
refer
to
the Problem Determination Guide
to
determine the appropriate action.
In addition
to
problem detennination procedures, the Problem Determination
Guide contains descriptions
of
the display station switches, keyboard functions,
and
Operator Information Area symbols.
Figure
3-1.
3278 Problem Determination Guide Access
Three types
of
keyboards can be attached
to
the 3278 Display Stations:
• The Typewriter keyboard (Figure 3-2), which resembles a typewriter
keyboard
• Two Data Entry keyboards -
- The Data Entry keyboard (Figure 3-3), which provides the basic data
entry
type
of
keyboard
- The Data Entry-Keypunch Layout keyboard (Figure 3-4), which has the
same keys
as
the
IBM
keypunch (024-026-029-129) keyboard
• Attribute Select Keyboards
- The Attribute,Select Typewriter keyboard (Figure 3-5)
- The Attribute Select Overlay keyboard (Figure 3-6)
- The Attribute Select Typewriter/APL keyboard (Figure 3-7)
Note:
The Typewriter/APL and Typewriter/Text keyboards
are
described in
Chapter
4.
The main difference
that
you
will notice between
the
Typewriter and Data Entry
keyboards
is
the
location
of
the
numeric keys. On the Typewriter keyboard,
the
numeric keys are all
on
the
top
row
of
keys. On the Data Entry keyboard,
the
numeric keys are placed
on
all four rows around the right-side keys.
If
you
are familiar with any
of
these keyboards,
you
already know what most
of
the keys do. The remainder
of
this chapter has three subdivisions:
the
first two
describe
the
keys
that
are different
on
the
Typewriter and Data Entry keyboards,
respectively;
the
third
describes the keys
that
are similar
on
the
two types
of
keyboards.
Turn
to
the
heading
that
applies
to
your keyboard.
3-4
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