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Determining If The Calculator Requires Service; Resetting The Calculator - HP 10BII User Manual

Financial calculator.
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Determining if the Calculator Requires Service

8VH WKHVH JXLGHOLQHV WR GHWHUPLQH LI WKH FDOFXODWRU UHTXLUHV VHUYLFH ,I
WKHVH SURFHGXUHV FRQILUP WKDW WKH FDOFXODWRU LV QRW IXQFWLRQLQJ SURSHUO\
UHDG WKH VHFWLRQ ´,I WKH &DOFXODWRU 5HTXLUHV 6HUYLFHµ RQ SDJH 
The calculator won't turn on (nothing is in the display):
7KLV FRQGLWLRQ PRVW OLNHO\ LQGLFDWHV WKDW WKH EDWWHULHV KDYH UXQ RXW
,QVWDOO QHZ EDWWHULHV
,I WKH FDOFXODWRU VWLOO GRHV QRW WXUQ RQ ZKHQ \RX SUHVV
 UHVHW WKH FDOFXODWRU VHH EHORZ DQG LI QHFHVVDU\
 HUDVH WKH PHPRU\ VHH EHORZ 
7KH
All Clear
FDVH WKH FDOFXODWRU UHTXLUHV D VHUYLFH

Resetting the calculator

 7XUQ WKH FDOFXODWRU RYHU DQG UHPRYH WKH EDWWHU\ FRYHU
 ,QVHUW WKH HQG RI D SDSHU FOLS LQWR WKH VPDOO URXQG KROH ORFDWHG
EHWZHHQ WKH EDWWHULHV ,QVHUW WKH FOLS DV IDU DV LW ZLOO JR +ROG IRU
RQH VHFRQG DQG WKHQ WKHQ UHPRYH WKH FOLS
 3UHVV
 ,I WKH FDOFXODWRU LV VWLOO QRW UHVSRQGLQJ HUDVH WKH PHPRU\ VHH
EHORZ DQG UHSHDW VWHSV  WR  DERYH RQH PRUH WLPH
Erasing the calculator's memory
 +ROG GRZQ WKH
 +ROG GRZQ WKH
 5HOHDVH DOO WKUHH NH\V
0HPRU\ LV FOHDUHG DQG
The calculator doesn't respond to keystrokes (nothing
happens when you press the keys):
 5HVHW WKH FDOFXODWRU VHH DERYH DQG LI QHFHVVDU\
 HUDVH WKH PHPRU\ VHH DERYH 
7KH
All Clear
FDVH WKH FDOFXODWRU UHTXLUHV D VHUYLFH
PHVVDJH VKRXOG QRZ EH GLVSOD\HG ,I WKLV LV QRW WKH

NH\
DQG WKHQ WKH
All Clear
PHVVDJH VKRXOG QRZ EH GLVSOD\HG ,I WKLV LV QRW WKH
/
NH\
VKRXOG EH GLVSOD\HG
A: Assistance, Batteries, and Service 121


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