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HP Forums / HP Calculators (and very old HP Computers) / General Forum v / HP-91 OOPs

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HP-91 OOPs
07-13-2024, 03:11 AM
Post: #1
teenix Offline
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 		Posts: 2,096
Joined: May 2016
HP-91 OOPs
Hi all,

Does anyone know if the HP-91 had an Out Of Paper switch?

Tony Duell's circuit suggests there was one, but there was no wiring for it in a 91 from the printer to the printer sub board. The printer mechanism also does not have the out of paper sense plate.

The connectors for the wiring have not been installed on the circuit board either and the soldering look like a factory finish.

cheers

Tony


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Messages In This Thread
HP-91 OOPs - teenix - 07-13-2024 03:11 AM
RE: HP-91 OOPs - tangdfx - 07-13-2024, 03:55 AM
RE: HP-91 OOPs - teenix - 07-13-2024, 04:33 AM
RE: HP-91 OOPs - rprosperi - 07-13-2024, 12:15 PM
RE: HP-91 OOPs - brouhaha - 07-13-2024, 04:54 PM
RE: HP-91 OOPs - rprosperi - 07-13-2024, 06:02 PM
RE: HP-91 OOPs - Roland57 - 07-14-2024, 06:57 AM
RE: HP-91 OOPs - teenix - 07-14-2024, 07:17 AM
RE: HP-91 OOPs - Jake Schwartz - 07-14-2024, 07:02 PM
RE: HP-91 OOPs - teenix - 07-17-2024, 11:56 PM
RE: HP-91 OOPs - rprosperi - 07-18-2024, 01:35 AM
RE: HP-91 OOPs - teenix - 07-18-2024, 05:56 AM
RE: HP-91 OOPs - rprosperi - 07-18-2024, 12:00 PM
RE: HP-91 OOPs - Massimo Gnerucci - 07-18-2024, 03:21 PM
RE: HP-91 OOPs - teenix - 07-18-2024, 08:13 PM



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