The Museum of HP Calculators

HP Forum Archive 14

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HP-IL module trouble
Message #1 Posted by Stephan on 16 Jan 2004, 7:11 a.m.

Hello all. I have serious trouble with my 2 cassette drives and 2 HP-IL modules. I bought a cassette drive on ebay and after deliverance I had to learn that the magnetic head was not functioning any more. Though mechanically it performed very well. So I asked around and found a drive which I was told was positively tested with an HP-75. After trying to get it to work, my HP-41 displayed for all commands "Transmit Err" with the old and the new drive. So I figured that I had miss manipulated and my IL broke. I organized a new IL module and as soon as I connected to the "tested" drive the same occurrence happened: "Transmit Err". Now I am stocked with to bad ILs and two non working drives. Running out of ideas and money. Does anybody have an idea how to help me here? Any succession is highly appreciated. Thank you all in advance. Stephan

      
Re: HP-IL module trouble
Message #2 Posted by Raymond Del Tondo on 16 Jan 2004, 12:40 p.m.,
in response to message #1 by Stephan

Hi,

have you tried testing the IL interface by plugging both connectors together, building an empty loop?

At least the loop should be ok then. If not, either the IL cable or the electronics of the module are bad. In most cases the cable is the reason.

Regards,

Raymond

            
Re: HP-IL module trouble
Message #3 Posted by Jeff on 16 Jan 2004, 1:18 p.m.,
in response to message #2 by Raymond Del Tondo

I had a similar "Transmit Err" and come to find out, my battery pack was shot. Even with the unit plugged in to the wall wort it still gave the same error. I bought some nicads from digikey and rebuilt the pack and no more problems. Hope this helps. Jeff

                  
Re: HP-IL module trouble
Message #4 Posted by Stephan on 19 Jan 2004, 4:42 a.m.,
in response to message #3 by Jeff

Hello Jeff. I will look for some new batterys and I also will change the ones in the calculator. Hope that will help. Unfortunaltely also the video interface, (which doesn't have any batteries) gives a "Transmitt Err" when I try to XEQ ADA, ADX or PRA. That looks to me like its really the IL-module. Thank you for your help so far. Stephan

            
Re: HP-IL module trouble
Message #5 Posted by Stephan on 19 Jan 2004, 4:37 a.m.,
in response to message #2 by Raymond Del Tondo

hello Raymond. No luck with this. Even the empty loop gives a "Transmitt Err". It can't be the cables, I checked them for failure. Thank you anyway. Stephan

      
Do a "Memory Lost" on the 41 and try again (n.t.)
Message #6 Posted by Hans Brueggemann [GER] on 17 Jan 2004, 4:31 a.m.,
in response to message #1 by Stephan

-

            
Re: Do a "Memory Lost" on the 41 and try again (n.t.)
Message #7 Posted by Stephan on 19 Jan 2004, 7:52 a.m.,
in response to message #6 by Hans Brueggemann [GER]

Danke Hans, werd ich heute Abend gleich ausprobieren. (For those used to English: Thank you "John", I'll give it a try this evening ;-)

            
Re: Do a "Memory Lost" on the 41 and try again (n.t.)
Message #8 Posted by Stephan on 20 Jan 2004, 3:01 a.m.,
in response to message #6 by Hans Brueggemann [GER]

Good morning Hans. Thank you very much indeed for your hint. It finally worked. Sometimes the easiest way seems to be the best. Or sometimes one thinks in the totally wrong direction and finds himself mentally blocked of some sort. You lightened my heart. Best regards Stephan


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