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+--- Thread: ? Full schematics for HP 82104A card reader ? (/thread-21462.html)
? Full schematics for HP 82104A card reader ? - husmus - 03-14-2024 08:08 PM
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.
RE: ? Full schematics for HP 82104A card reader ? - teenix - 03-14-2024 08:59 PM
I can't see the A model but 82104 is here...
https://www.hpcc.org/cdroms/schematics5.0/index.html
cheers
Tony
RE: ? Full schematics for HP 82104A card reader ? - husmus - 03-14-2024 10:15 PM
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.
RE: ? Full schematics for HP 82104A card reader ? - Dave Frederickson - 03-17-2024 06:37 PM
Here's the Service Manual. Schematic is in Section IV.
https://literature.hpcalc.org/community/hp82104a-sm-en.pdf