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Hit clock button put in time on key panel and hit clock again.
Sorry, there was a problem. Please try again later.Please access this link and follow the listed steps: http://help.panasonic.ca/PCS/OperatingInstructions/NNSU676S,%20NNSU696S,%20NNSU686S,%20NNSU656B,%20NNSU676B,%20NNSU656W,%20NNSU676W_En_OI.pdf#page=8
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