IBM 3278 Series Maintenance Information page 98

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Japanese English
Test Mode 2:
Key-to-CRT
Test (used to
test the key-
board scan
codes)
Keyboard
Provides a path from keyboard to display.
Mode Entry: Automatic, after display is loaded
with Mode 1 pattern of characters.
Key in any characters (but do not press
r+
Characters keyed in replace characters displayed in Test
Mode 1, beginning at top left of display. This is a test of
keyboard scan codes.
Note: Regardless of the characters that appear on the key·
tops, the characters displayed are those shown in the dia·
Control key). _ _ _ _ _ _ _ _ _ _ _ _ _ _
..J
gram below. Notice that certain keys cause double·
character entry, the first when the key is pressed and
the second when it is released: these keys are labeled
nn, mm,
00,
¥¥
and
pp
in the diagram.
~R ~!je:1Pl~~~~~t!j~~~~B P3 _~ ~~p
~PJ. (:~:y~~~~~~~tI1~~(I1~R
PR
~~~
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~_,~~_S. ~_D
_ _
.~~~_--.H-.R0~RP~~U. PJ_.fC)_",~_g_ .~_J~.
§0
~~~@3@3~~~~888~H
R@3
[-y[Ej8
~~~trol WQ~t
SPACE
jlPPlri?\
~y
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Keyboards
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