NCR PC4I, Owner'S Manual

Page: 109 / 167

MAINTENANCE AND TROUBLESHOOTING
Keyboard Test
When you choose the Keyboard Test, selection 3 on the Main Menu
screen, the system performs a keyboard port test and a status message
is displayed on the screen along with the keyboard verification test
(see Figure 4-11).
The Keyboard Port test performs a port reset. If a keyboard is not
attached, then the test performs a write and read on the port. If a
keyboard is attached, then the test signals to the keyboard to perform
its own internal diagnostics. If the keyboard self-diagnostics do not
complete successfully, then the test fails (refer to Error Messages,
Figure 4-12).
In the Keyboard Verification test you are prompted to press keys on
the keyboard, then to verify that the keys displayed are the same as
the ones you pressed. If the keys do not correspond then the program
signals a keyboard error.
The NCR P e rs o n a l Computer C o p y rig h t 1985 NCR C orp.
KEYBOARD
KEYBOARD
F1 F2
ESC
1 2 3
A
5 6 7 e 9
0 - = BS
OEL PU NL SL
F3 F4 TAB
a
w
E
R T Y
U i 0 P t ] CR CTL END
PD HM
T PU -
F5 FB
CTL
A s 0
F
G
H J K L
{ 1
T
♦-
5
-*
P7 FB
\
z X C V B N M
t
. / PS «-
HN
-t
END
1
PD +
F9 F10 ALT
SP CL INS
i
INS DEL CR
ENTER THE KEY COOES TO BE TESTED AND VERIFY THAT THE
CORRECT CODE APPEARS ON THE CRT DISPLAY.
ENTER <F1> AND <F10> IN SEQUENCE TO EXIT TEST.
v ____________________________________________________y
Figure 4-11 Keyboard Test Screen
OWNER S MANUAL
4-13