HP15C Help



#14

I sold an HP15C on eBay and I am not really familiar with its operation. It did pass the self tests as shown here:

(ON X) and the keyboard test (ON -:-).

See:

http://www.rskey.org/~mwsebastian/selftest/hp_test.htm#voyager

for testing details.

When the winner received it he couldn't even perform rudimentary arithmetic correctly (like 5 ENTER 15 X). I had him clear the complex flag and now that works.

However, both SQRT and X^Y produce ERROR 4. This is confusing because the manual states ERROR 4 is a programming error, I would expect ERROR 0 during a bad SQRT operation.

Thanks for any help you can provide.

Regards,
Victor

Edited: 28 Apr 2005, 1:22 p.m. after one or more responses were posted


#15

Victor,

Have your client clear User mode by pressing [f][RCL]. He should be fine.

Your client needs manuals for the HP15C.

Namir


#16

Thanks for your help. I agree he needs to read the manual.

Victor


#17

The manual is available on the Bring Back the 15C website.
It is here.

Arnaud


#18

Excellent!! Now folks have no excuse to ask how to operate the 15C.


#19

Thanks, I found that also. I sent the link to my client but apparently he is completely unfamiliar with the HP15C. He is treating every unexpected operation of the calculator as a possible failure and asking me for support.

Reagrds,
Victor


#20

Maybe you should charge him for tech support unless it really is a failure?

Arnaud


#21

Arnaud,

Yes, I should charge, but that might precipitate a negative feedback on eBay. I always give people a positive as soon as they pay me because in my opinion they have fulfilled their obligation to me.

It's a pity most others don't operate in the same way. After getting burned a few time I have become disillusioned with eBay, particularly they way they responded to my emails. They pretty much said go away and let us continue to make money.

--Victor

#22

I would advise him to start fresh from a master clear (ON -, I believe)

#23

The buyer doubtlessly spent $250+ on this calc and doesn't even know basic RPN operations. What a waste...


#24

Yes, but what a testament to the appeal and desirability of the traditional HPs!


#25

I wonder why someone would spend extra money on a used calc that he has trouble using. Why not just get a new TI?


#26

Well, he did claim to use an HP32SII. Those two models are quite different and he should have spent some time studying the manual.

I hate dealing with eBay. I sold the HP15C as a favor to a friend who has no experience selling on eBay. The only good thing about it is the selling prices do get high.

--Victor


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