Re: hp 11c trouble shooting Message #2 Posted by Mike Ingle on 18 July 2007, 1:03 a.m., in response to message #1 by Gerald Klitz
With power off, hold down ON. Press and hold - (subtract.) Release ON. Release -. It should say "Pr Error."
Now turn it off and do same sequence with X (multiply) instead of subtract. It should say running then light all segments, meaning the calculator is good.
Test the keyboard: turn off, ON and divide, then press all keys left to right then top to bottom, pressing Enter once in each row. It should display 11 at the end.
Mike
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