Re: HP-48SX ....TEST FUNCTION Message #2 Posted by Vieira, Luiz C. (Brazil) on 1 May 2003, 10:37 p.m., in response to message #1 by steve
Hi;
locate the [ON] key and [C], [D], [E] and key. With the calculator switched to ON:
1 - press [ON] and hold;
2 - press [E] and hold;
3 - release [ON];
4 - release [E];
The test is "circular"and starts over after reaching the end. You should see "OK 48 SX" as a result for test OK. The self-test may be interrupted anytime with:
1 - press [ON] and hold;
2 - press [C] and hold;
3 - release [ON];
4 - release [C];
To test the keyboard:
1 - press [ON] and hold;
2 - press [D] and hold;
3 - release [ON];
4 - release [D];
You'll see three vertical lines.
5 - press [E];
you'll see "KBD1" in the top of the display. Now press each key on each roll, begining with the leftmost on the top roll ([A]) continuing to right till the last one ([F]) and going donw to each roll, always left to right, top to bottom.
After the last key is pressed ([+]), the display shows "KBD1 OK". If one key is not pressed (bad contact) or repeats, "KBD1 nnnnn" is shown, where nnnnn is an internal code for the missing/repeated key.
In both cases, the kbd test may be interrupted with the sequence:
1 - press [ON] and hold;
2 - press [C] and hold;
3 - release [ON];
4 - release [C];
These sequences are also known as [ON]/[C], [ON]/[D] and [ON]/[E].
Hope this helps.
Luiz C. Vieira - Brazil
|