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Model # 420 DP Official Citizen calculator

Here are the diagrams and repair parts for Official Citizen 420-DP calculator, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

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Calculator Ribbon BR88

#NI

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Calculator ribbon

Part #BR88

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

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