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? Full schematics for HP 82104A card reader ?
03-14-2024, 08:08 PM
Post: #1
? Full schematics for HP 82104A card reader ?
Does anyone have the full schematics for the 82104A card reader? The middle vertical prong (of five) is not responding during a card passage. Thanks.
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03-14-2024, 08:59 PM
Post: #2
RE: ? Full schematics for HP 82104A card reader ?
I can't see the A model but 82104 is here...

https://www.hpcc.org/cdroms/schematics5.0/index.html

cheers

Tony
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03-14-2024, 10:15 PM (This post was last modified: 03-14-2024 10:19 PM by husmus.)
Post: #3
RE: ? Full schematics for HP 82104A card reader ?
Thanks so much. When I tried it earlier today the PDF file wouldn't load but now it does. The problem was simply the second fork prong switch not activating. Reader now works.
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03-17-2024, 06:37 PM
Post: #4
RE: ? Full schematics for HP 82104A card reader ?
Here's the Service Manual. Schematic is in Section IV.
https://literature.hpcalc.org/community/...-sm-en.pdf
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