Determining if the Calculator Requires Service

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nThe calculator won’t turn on (nothing is in the display):

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￿￿HUDVH￿WKH￿PHPRU\￿￿VHH￿EHORZ￿￿
7KH All Clear PHVVDJH￿VKRXOG￿QRZ￿EH￿GLVSOD\HG￿￿,I￿WKLV￿LV￿QRW￿WKH￿
FDVH￿￿WKH￿FDOFXODWRU￿UHTXLUHV￿D￿VHUYLFH￿Resetting the calculator
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Erasing the calculator’s memory￿￿+ROG￿GRZQ￿WKH￿1￿NH\￿￿￿+ROG￿GRZQ￿WKH￿P￿DQG￿WKHQ￿WKH￿/￿NH\￿￿￿5HOHDVH￿DOO￿WKUHH￿NH\V￿0HPRU\￿LV￿FOHDUHG￿DQG￿All Clear￿VKRXOG￿EH￿GLVSOD\HG￿

nThe calculator doesn’t respond to keystrokes (nothing happens when you press the keys):

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￿￿HUDVH￿WKH￿PHPRU\￿￿VHH￿DERYH￿￿

7KH All Clear PHVVDJH￿VKRXOG￿QRZ￿EH￿GLVSOD\HG￿￿,I￿WKLV￿LV￿QRW￿WKH￿

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A: Assistance, Batteries, and Service 121