Kl Keyboard Test - HP 9845B/C CE Handbook

5-6 9845B/C
Diagnostics
Part of block 1 is used by the display. When block 1 is tested, the display is lost. If an error in
block one is found, it is displayed, however, this destroys the test conditions in block 1 and
causes other errors.
Kl Keyboard Test
This test is used to check alI the keyboard keys and features for proper operation.
Before starting the test, alI double-position keys like PRT ALL, AUTOST and SHIFT LOCK
must be in the up position.
Press
(}L);
If any of the double-position keys mentioned above are down, the display will telI you to release
the key and then to press A.
If all the double-position keys are up, the CRT displays:
WHICH KEY TO START
TO END PRESS
+
Press the key that you wish to start the test with. Any key shown below may be selected. Then
press that key again. The display tells you which key to press next.
After selecting a key to begin, press the keys in the sequence shown above. To end the test,
press
CQ .
A bad key or a key pressed out of sequence will result in a beep and a message
describing the key pressed in error. The key sequence described in Figure XX can be used for
any keyboard option although the key caps and characters will be different.
If the spacebar is pressed as the first key, the test starts with the special keys (Le., CONTROL,
SHIFT LOCK, SHIFT).
If a bad key is found, restart the test and continue with the key after the bad key to test the rest
of the keyboard.
The
~ ~
CIJ
o=J
keys have to be pressed lightly and then pressed down fulIy.
Pressing the arrow keys down fully will check the repeat function of these keys. A continuous
beep should be heard when these keys are fulIy depressed.
Test the REPEAT key by pressing a key and the REPEAT key at the same time. A continuous
beep should occur.