HP Forum Archive 20

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Voyager Series Message #1 Posted by aj04062 on 4 May 2011, 9:59 p.m. Can anyone tell me what year the changeover started to happen in the internal designs (1-2 pc boards)

Re: Voyager Series Message #2 Posted by exschr on 5 May 2011, 11:20 a.m., in response to message #1 by aj04062 I can only say for sure that it changed between 2337A and 2419A! But I can not narrow it further down. My investigations so far are like this: LCDType Bat.contact PCB confirmed Ser-Nr LCDsepBoard tin/silver two separate 2326A,2337A LCDfullMuPx spring/gold onePCB 2419A,2438A,2439A,2509A,2521A,2538A,2623B,2626A LCDhalfMuPx spring/gold onePCB 3437S,3521S The LCD changed to half as much Multiplex (MuPx) connections somewhere after 2626A and before 3437S. These numbers are from my samples (which I can verify). Most probably it depends on the manufacturing location and isn't consistent for different locations. Hope that this fragment adds to the truth out there ;-)

Re: Voyager Series Message #3 Posted by aj04062 on 5 May 2011, 12:45 p.m., in response to message #2 by exschr Thank You! Well the HP-10C that I just bought is 2305A, so my guess is it is 2 pc (have not received yet). That's good as it has a dent in the bezel. Hopefully I can straighten out easier than the 2 pc design. Edited: 5 May 2011, 10:18 p.m.

Re: Voyager Series Message #4 Posted by Randy on 5 May 2011, 9:46 p.m., in response to message #1 by aj04062 I doubt you can narrow it any further as it varies among the the different models. The overall range for the family is somewhere between 3rd Q 83 to 2nd Q 84 which is reflected in exschr's data. FWIW, I have never seen a one board 10C and I do not believe they where ever built. Supporting this theory is the museum listed Introduction-Discontinuation of 1982-1984. So, it would stand to reason it was discontinued during the design change-over to the single board.

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