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9810A needs help - Photos



#10

I have come into posession of a very nice 9810A. But it needs some help. It does not power up correctly. I have put a few
photos with what I have done so far. Any suggestions would be helpful as I am not familar with the working of this
calculator.

http://www.halcyon.com/ipscone/9810/9810.html

Thanks,


#11

The three slots behind the display section are for optional modules. I'm sure you don't need them for operating the machine.

You might need a module to make full use of the printer (I have to check that).
I believe, you can only print numbers without this special ROM.

Did you look into the patent, that describes the 9810? I'll have to look for the number.

Hey, I found some candidates, but not the right one (yet):


US4412300:Programmable calculator including alphabetic output capability
US4063221:Programmable calculator
US4480305:Programmable calculator including editing capabilit
US4203152:Programmable calculator including key-log printing means


#12

I wonder if schematics are available. I'm sure I could find the problem, if I had schematics. Fixing it is altogether another problem. Parts may be obsolete and unavailable. (i.e. cpu and custom stuff).

One of my problems is that I have never seen one of these power up and don't know how to assess what I see right now. Is it stuck in power up test? Is it brain dead? Is there any kind of real life or just random state?


#13

I remember having them and will look after the right patent as soon as I get home. It's a rather large book (surely 200 pages together with the ROM listings).

The CPU is the same in the 9810, 20, 30 series, but all of these are not easily available anymore...

When it powers up, it makes a horrible noise from the fan and the three LED displays show "0".

I don't have a digital camera right now, but I could borrow one and take a picture. There's not much special to see anyway.

Can you receive a 30 MB email ?


#14

that is not necessary if it is a photo of the LEDs. I have seen the display; quite impressive.

What I desparately need is something to help me isolate the problem. Copies of schematics, service manuals, block diagrams, etc.

With that I'm sure I could find the problem. Actually, fixing it is a whole other story. I'm sure that some parts are harder to come by than the schematics.

Thanks for your help though.

By the way, what do the patents contain that would be of interest?


#15

I thought more of a .pdf of the patent with the schematics.


#16

OK, I didn't remember the size exactly. The pdf file is abt 56MB in size and I don't think I should email something like that (except as a test for the mail relays). I'd guess with MIME coding the pdf expands to abt 100MB !!!

Instead of that I placed it onto my website. The address is:

http://www.hawel.net/hp9810a.pdf

Sorry, no ftp server.

The patent number is 3.859.635 and the title is simply "Programmable Calculator".

The document is 411 pages long and includes schematics, hardware description and ROM listings - enough to build yourself a 9810A.

Some versions of Netscape seem to have problems with such large files, so I'd recommend the Internet Explorer in this case (I prefer Netscape normally ... ) .

The connection should be fast enough (T3, T4, T5, T6 ??? - anyway, it should be no problem, it's the University connect and it's 9:21 p.m. now in Austria, so there's surely no problem from my side with the transfer rate. )

BTW: I'd like to know, how long the transfer took.

I don't have all the other patents, I just looked at them some time ago and seem to have a rather complete list of the TI and HP calculator patents, together with the machines they describes (these aren't mentioned in the patents).

There was a lot of new inventions introduced with this calculator, so there's some patents, but this document is what you want to have.

In exchange you could measure the diameter of the printers rubber roll (mine is disintegrating - an effect similar to the magnetic card readers rolls).

I hope you can use the paper and please send me an email when you have it, because I'll have to remove it from the server (the HDD is almost full).


#17

I won't be able to download it for about 4 hours. Is that ok?


#18

I'll leave it on-line for at least 18 hours. Hmmm... A 30 meg picture of a LED Display - sounds interesting ...


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