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HP Forum Archive 18

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Are Seiko/Epson RAM cards compatible with the HP 48GX?
Message #1 Posted by Gonzalo Fernandez (Spain) on 30 Jan 2008, 12:58 p.m.

I have one Seiko 128K RAM card for the HP 48GX, doesn´t have battery, when I put on my 48GX shows nothing, including when I do the autotest of the cards. (ON-D)

thanks

      
Re: Are Seiko/Epson RAM cards compatible with the HP 48GX?
Message #2 Posted by Eric Smith on 30 Jan 2008, 1:45 p.m.,
in response to message #1 by Gonzalo Fernandez (Spain)

The cards for the 48SX and 48GX were customized versions of the Seiko/Epson cards (non-PCMCIA) that would work down to a lower voltage. The standard cards can cause problems as the calculator's batteries get low.

      
Re: Are Seiko/Epson RAM cards compatible with the HP 48GX?
Message #3 Posted by Ron G. on 31 Jan 2008, 2:49 a.m.,
in response to message #1 by Gonzalo Fernandez (Spain)

ON-D gets you to test mode, but how do you go from there to testing the card?

            
Re: Are Seiko/Epson RAM cards compatible with the HP 48GX?
Message #4 Posted by Raymond Del Tondo on 31 Jan 2008, 3:27 a.m.,
in response to message #3 by Ron G.

While the three vertical lines are shown, simply press the up-arrow key.
This will test both port 1 and port 2 RAM non-destructively.
Don't worry if both ports are shown as on address #90000,
they're simply reconfigured during the test.

HTH

Raymond

                  
Re: Are Seiko/Epson RAM cards compatible with the HP 48GX?
Message #5 Posted by Ron G. on 31 Jan 2008, 8:54 a.m.,
in response to message #4 by Raymond Del Tondo

Thank you!


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