IBM 5280 User's Setup Manual page 118

17. Press all the alphabetic keys (ABC ... XYZ) and numeric keys
(012 ... 789) and observe this display.
If you have a data entry keyboard, you will have to press and hold the
Num key when keying the numbers.
If you have a typewriter keyboard, you can enter the alphabetic keys in
either upper case {ABC ... } or lower case (abc ... ).
For this test, use only the A through Z and 0 through 9 keys. Do not
press special character keys because they may not function correctly in
this system checkout procedure.
Enter characters on keyboard and observe display. If
these
do
not correspond refer to manual.
ABCDEFGHIJKLMNOPQRSTUVWXYZOi23456789
ENTER
to terminate.
01.
52-03
J
If some of the keys that you pressed do not j l a y
the characters that you expected, press the key·
and repeat step 17. If the characters that you press still
do not display correctly, call your service representative.
18. Press the Enter key when you are satisfied that the keys you
pressed displayed the correct characters.
19. Observe this display.
Te.;;-t cOfflPl.ete.
i. Re.si"ar t
'"' Ex i t
op t i on:
._ h·ess
ENTER 52-78
J
User's Setup Procedures 111