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Wanted: Monroe 620 schematics
03-21-2022, 10:54 AM
Post: #1
Kees Bouw Offline
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 		Posts: 75
Joined: Jul 2017
Wanted: Monroe 620 schematics
Hi,

Does anyone have schematics for the Monroe 620 desktop calculator from the early seventies, or know where I may find these?
I am also interested in schematics for the Canon L121 which is an almost identical calculator.

Thank you very much!

Kees.
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03-21-2022, 04:21 PM
Post: #2
AndiGer Offline
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 		Posts: 556
Joined: Oct 2015
RE: Wanted: Monroe 620 schematics
Wanna look here? For the Canola L121
https://www.oldcalculatormuseum.com/canonl121.html

Maybe he has the service manual (as he gives details from it)?
Would be interesting for me as welll as I also have a (working) Monroe 620.
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03-21-2022, 10:00 PM
Post: #3
Duane Hess Offline
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 		Posts: 170
Joined: Mar 2014
RE: Wanted: Monroe 620 schematics
Another site is Hilpert's in Canada:
madrona.ca/e/eec/calcs/Monroe610.html
same unit without the memory.

It has a schematic very similar to Andi's suggesttion, but arranged a bit differently.
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