Casio
Office

Model # PR 121 Official Casio calculator

Here are the diagrams and repair parts for Official Casio PR-121 calculator, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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Unknown Brand Name #298 Calculator Ribbon (black And Red) BR80C

#NI

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Unknown brand name #298 calculator ribbon (black and red)

Part #BR80C

The manufacturer no longer makes this part, and there's no substitute part

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