IBM 3270 Operator's Manual page 49

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