|Re: is there a self-test procedure for the 10B?|
Message #2 Posted by Ed Martin on 12 Feb 2003, 6:32 p.m.,
in response to message #1 by barry
Yes, the 10B does have a self-test routine!
First, hold down the C key, then press PMT at the same time.
Press any key four times, and watch the display as various patterns are displayed. After pressing the key four times, the calculator displays the copyright message COPr. HP 1987 momentarily, and then the message 01. This indicates the calculator is ready for the key test.
Starting at the upper left corner (N) and moving from left to right, press each key in the top row. Then, moving, left to right, press each key in the top row. Then, moving left to right, press each key in the second row, third row, etc., until you've pressed each key.
If you press the keys in the proper order, and they are functioning properly, the calculator displays two-digit numbers. (The calculator is counting the keys using hexadecimal base.)
If you press a key out of order, or if a key isn't functioning properly, the next keystroke displays 10 - FAIL, followed by a one-digit number. If you received the message because you pressed a key out of order, you should reset the calculator (hold down C and press PV) and start the self-test over. If you pressed the keys in order, but got this message, the calculator requires service.
When the keyboard test has been completed, the calculator displays a message:
The calculator displays 10 - Good if it passed the self-test.
The calculator displays 10 - FAIL, followed by a one-digit hexadecimal number 1 through F, if it failed the self-test. If the calculator filed the self-test, it requires service.
If the calculator failed the self-test, rerun the test to verify the results.
To exit the self-test, reset the calculator (hold down C and press PV).