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Appendix C
C.1 Cleaning the Reader
To maintain optimal imaging and reading performance, keep the glass read window free of
dust and fingerprints. To remove dust, use a pressurized air duster. If the window needs
cleaning, use a lens cleaning cloth or a cleaner approved for use on coated optics. Do not
spray water or cleaning fluids directly onto the glass window, which could allow moisture to
enter the case.