I am now an owner of two 15 C and a 15C LE that arriwed to me in Sweden from US today.

Sorry to bother, but I tried the On/X (and On/+) self tests but I almost instantly got Error 9. Is this acceptable? On the other hand I saw the errata about the g/Enter + On tests and the tiny machine passed all three.

What, if anything, am I missing?

Cheers,
Matti, Sweden

Hi.

You are correct, these former tests no longer work with the HP15CLE. I have one working perfectly fine and the behavior is the same.

Congratulations on your new calculator!

Cheers.

Luiz (Brazil)

Edited: 10 Aug 2012, 10:12 a.m.

Thanks Luiz,

Rest assured that I will spend quite a lot of time with the 15C LE now that it has the speed that I lacked. Indeed will I take down the Advanced functions handbook and see the speed-improvements - live.

Oh, what a joy it is to be a nerd.

/Matti

Hi, Matti.

That makes, ahn, "two" (not only...) of us all... I have two HP15C myself and one 15CLE, we match in these numbers. And I'm helplessly addicted...

Enjoy!

Luiz (Brazil)

Quote:

---

You are correct, these former tests no longer work with the HP15CLE.

---

No, that is not correct. The test works, but times out rather quickly. If you are fast, you can go through all the keys and pass the test.

I have tested this on an original 15c and the test times out after a few minutes as well.

You can still call this a bug though, as the test should have been changed to suit the much faster 15C LE.

Hi, Harald.

Quote:

---

No, that is not correct. The test works, but times out rather quickly. If you are fast, you can go through all the keys and pass the test.

---

Sorry, I did not get it. The ON/× (or the ON/+ and pressing a key) return all segments of the LCD lit when the calculator is OK, or [Error 9] when it is faulty. Shouldn't they return the 'all segments lit' then right after pressing the ON/× keys?

Now it is my turn to ask if I am missing something. Or would you be referring to the ON/÷ test?

Cheers.

Luiz (Brazil)

Edited: 10 Aug 2012, 11:22 a.m.

Hej Matti,

Here is the self-test procedure for the 15C LE:

With the calculator OFF,

Press and hold 'g' and 'ENTER'; press 'ON'

Release 'ON'; release 'g' and 'ENTER'

The screen will display '1.L 2.C 3.H'

Press 1 to perform the LCD test

Press 2 to display the Copyright/Checksum message

Press 3 to perform the keyboard test

Press ON to exit the self-test.

Quote:

---

Hi, Harald.

Sorry, I did not get it. The ON/× (or the ON/+ and pressing a key) return all segments of the LCD lit when the calculator is OK, or [Error 9] when it is faulty. Shouldn't they return the 'all segments lit' then right after pressing the ON/× keys?

Now it is my turn to ask if I am missing something. Or would you be referring to the ON/÷ test?

Cheers.

Luiz (Brazil)

---

Hi Luiz,

oh, sorry. Of course you are right. I was indeed referring to the ON/÷ test. Don't know why I though that was the one we were talking about....
Sorry for the confusion!

That's perfectly fine! We are all willing to help, even helping each other. The most important is: in the end, we're all getting to a consensus.

Cheers!

Luiz (Brazil)

Just make sure that you don't try to use PSE, nor should you expect any low battery warning before the 15C-LE quits and resets all memory after relatively short battery life. Also, if you do try the old 15C self-tests, usually program memory will be corrupted. These are three of the most serious 15C-LE bugs that apparently will never be fixed.

I have two 15C and two 15C-LE units. I used one of the 15C units for 11 years. I have yet to recognize any real value to the 125 times speed-up of the the 15C-LE. Few attempt problems on the 15C that would only be considered, if only it were 125 times faster. :-)

I've gone back to using my 1985 HP-15C (rather than the 15C-LE novelty item) when I'm keeping my grossly more capable HP-42S units out of harm's way.

Hej Peter,

Yes, there seems to be some changes in the self-tests for the 15C LE. Thank you (all!) for straightening things up.

I did the complex calculation in the AFH/15C pages 086-089, and it took just 5 s to be compared to the 15C:s 9 min (540 s-ish). Isn´t things just fun when they're fun... ;-)

/Matti