Sharp EL-738 operation manual Battery Replacement, When to replace the battery

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Battery Replacement

Notes on battery replacement

Improper handling of battery can cause electrolyte leakage or explosion. Be sure to observe the following handling rules:

•Make sure the new battery is the correct type.

•When installing, orient the battery correctly, as indicated in the calculator.

•The factory-installed battery may be exhausted before it reaches the service life stated in the speciﬁcations.

Note on the erasure of memory contents

When the battery is replaced, the memory contents are erased. Erasure can also occur if the calculator is defective or when it is repaired. Make a note of all important memory contents in case accidental erasure occurs.

When to replace the battery

If the display has poor contrast, or if nothing appears on the screen, even when sis pressed, it is time to replace the bat- tery.

Caution

•Fluid from a leaking battery accidentally entering an eye could result in serious injury. Should this occur, wash with clean water and immediately consult a doctor.

•Should ﬂuid from a leaking battery come into contact with your skin or clothes, wash them immediately with clean water.

•If the product is not to be used for some time, to avoid dam- age to the unit from leaking battery, remove it and store in a safe place.

•Keep battery out of the reach of children.

•Exhausted battery that is left in the calculator may leak and damage the unit.

•Explosion risk may be caused by incorrect handling.

•Do not throw battery into a ﬁre, as it may explode.

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Contents EL-738 Page Contents Operational Notes IntroductionUsing the .and Key Notations in This ManualKeys Resetting the Calculator In Case of Difﬁculty Resetting the calculatorPreparing to Use the Calculator Calculator and Display Layout Calculator layoutKey operation keys 2ndF Display layoutSelecting the display notation and number of decimal places SET UP Menu0003 3333333000 Selecting the angular unit seeOperations available in each mode Selecting a modeOperating Modes Selecting the date format see343 140009000 Basic CalculationsDelete key ⋅ ⋅Memory clear key Editing and Correcting an EntryCursor keys Playback functionMemory use in each mode for memory calculations Errors500 192Independent memory M Temporary memories A-H, X-ZLast answer memory ANS TVM variablesStatistical variables Memory calculationsExample Key operation Financial calculations General InformationVariables shared among calculations Variables used in ﬁnancial calculationsBasic variable operations TVM variables N, I/Y, PV, PMT, FVListed ﬁnancial variables Category Display symbols Descriptions ENT and Comp symbolsCompound interest Cash ﬂow diagramsVariable Corresponding Description Default Variable key Setting the payment period payment dueTVM Time Value of Money Solver Variables used in the TVM solverCalculating basic loan interest Basic examples for the TVM solver24000 12005600000 440008000 400125586 Calculating basic loan payments20000 3600FV= Calculating future value2000 1001000000 376889Ordinary annuity END Specifying payments dueAnnuity due BGN Ordinary annuity30000000 1800360 162457029950 240014500 299500150000 3400627995 Calculating down payment and amount to borrow90000 30000550 14655892Variable Description Default value Amortization CalculationsVariables used in amortization 8895148 61656203428 104852600 17004800 38445748275524 1724476Entering cash ﬂow data Discounted Cash Flow AnalysisSingle cash ﬂows Repeated cash ﬂows200 000*2300 Conﬁrming and editing dataEditing data 2500000Deleting data Inserting data600000 3000000Variables used in discounted cash ﬂow analysis NPV and IRRPlay in Normal mode Procedure Key operation Display Bring up the initial disTo obtain NPV To obtain IRRCalculating the present value of variable cash ﬂows 2314662752 Setting the day-count method Bond CalculationsVariables used in bond calculations To obtain yield to maturity Yield I/Y To obtain bond price Price PV10000 65015-2023 7209250 728Entering dates Depreciation Calculations Setting the depreciation methodVariables used in depreciation calculations Key operation DescriptionPage 3000 5000000Calculating straight-line depreciation Conversion between APR and EFF 1956To change APR to EFF To change EFF to APRVariables used in day and date calculations Day and Date Calculations22800 10-2009Calculating number of days Answer 228 daysProcedure Key operation Display Move to the last date Percent Change/Compound Interest Cal- culationsCalculate 11600000 75000005467 800000113 980000Cost/Sell/Margin/Markup Calculations Variables used in cost/sell/margin/markup calcula- tions9500 4556088842 Determining selling priceBreakeven Calculations Variables used in breakeven calculationsCalculating the breakeven point 7580 150000012000 33937Chain Calculations Constant Calculations071 0875000 4500Random numbers Random FunctionsRandom dice Random coin532 Modify FunctionRandom integer For a single-variable data set Entering statistical dataFor a two-variable data set x value y value J Key operation Sub-mode DisplayEntering statistical data 1000 2000 Single-variable statistical calculations Statistical Calculations and VariablesLinear regression calculations Quadratic regression calculationVariables Content 53000 17857Single-variable statistical calculation Linear regression calculation Quadratic regression calculation TVM solver Financial Calculation FormulasAmortization calculations Discounted cash ﬂow analysisBond calculations Depreciation calculations Conversion between APR and EFFDay and date calculations Statistical Calcula- tion Formulas Cost/Sell/Margin/Markup calculationsBreakeven calculations Error codes and error types Errors and Calculation RangesSyntax error Error Calculation error ErrorNo solution Error Equation too long ErrorDisplay error Error Input value error ErrorFunction Calculation range Calculation ranges of functionsInteger When to replace the battery Battery ReplacementReplacement procedure Automatic power-off functionPriority Levels in Calculations Speciﬁcations For more information about business/ ﬁnancial calculatorsKey operation and calculation priority Index Formulas, 72-75 FV, 18, 22, 72 GRAD, 8, 9, 61 Memo