Found these inside a non-working 71B
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03-11-2018, 02:07 PM
Post: #15
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RE: Found these inside a non-working 71B
(03-11-2018 01:45 PM)MikeSD Wrote: 1) I have a couple versions of the museum DVDs if I can find them but I don't recall a schematic. What doc was that in? For 1), you probably want to use the "HP-71B Hardware Internal Design Specification (more complete, 164 pages)" document. It contains schematics, board layout, etc. although it is not a full-blown service manual. For 3), often, buzzers were replaced/modified to make then louder for use outdoors, such as surveying, and also in factory settings. Not sure if these apply here, just a guess. For 2), I hope Paul is still reading... lol --Bob Prosperi |
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