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Question posted by wahidullahkhan2 on July 26th, 2014

The Display Of My Casio Fx-991es Natural Display Scientific Calculator Become Up

The display of my Casio fx-991ES Natural Display Scientific Calculator become upside down. how can i reset it into its normal display?

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Answer #1: Posted by omnipotent on August 27th, 2014 10:27 PM

omnipotent

Member since:
August 22nd, 2014

Points: 19,710

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Try to reset it by pressing the key shift and then mode and select reset all .
If its not work pull up the battery .
If above steps are wastefull then contact casio customer center given in your warrenty manual

Related Casio FX-991ES Manual Pages

User Guide - Page 4

... of how a key operation to change without notice. • In no event shall CASIO Computer Co., Ltd. E-2 Note that come with it . • The following procedure when you see "Using Calculator Memory". Note that come with it . Initializing the Calculator Perform the following shows an example of the actual key operation you perform...

User Guide - Page 6

... Doing so can remove printed markings and can cause slow display response, total failure of the display, and shortening of the calculator. Always keep written records of humidity and dust. Very... before using the calculator for the first time. • Even if the calculator is operating normally, replace the battery at least once every three years. Avoid carrying the calculator in the pocket ...

User Guide - Page 7

... setting is the way you press N) is low. Important! • If adjusting display contrast does not improve display readability, it , and then affix the hard case to the back of the calculator as shown in the illustration below. Before Using the Calculator k Removing the Hard Case Before using d and e while the mode menu (which...

User Guide - Page 8

... standing by for input of decimal places is in effect. This indicator appears after you press t. Example: Input expression { Calculation result k Display Indicators Sample Display: CMPLX This indicator: S A M STO RCL STAT CMPLX MAT VCT 7 8 9 FIX SCI Math $` Disp Means this: The keypad has been shifted by pressing the S key. The ...

User Guide - Page 9

...-N EQN MATRIX TABLE VECTOR (2) Press the number key that takes a long time to execute, the display may show only the above indicators (without any value) while it performs the calculation internally. k Configuring the Calculator Setup Pressing 1N(SETUP) displays the setup menu, which you want to select. • To select the CMPLX Mode, for...

User Guide - Page 10

... paper. • Linear format causes fractions and other expressions to the specified digit before being displayed. Calculation results are rounded off to be displayed in a single line. Calculation results are rounded off to 9) controls the number of decimal places for displayed calculation results. Example: 100 ÷ 7 = 14.286 (Fix3) 14.29 (Fix2) • Sci: The value...

User Guide - Page 11

... the frequency (FREQ) column of the two available settings (Norm1, Norm2) determines the range in which results will be displayed in nonexponential format. The decimal point for input values is applied for calculation results . Norm1: 10-2 > x, x > 1010 Norm2: 10-9 > x, x > 1010 Example: 1 ÷ 200 = 5 ×...

User Guide - Page 12

... Norm1 d/c a+bi OFF Dot • To cancel initialization without doing anything, press A(Cancel) instead of the functions shown below . 19(CLR)1(Setup)=(Yes) This setting: Calculation Mode Input/Output Format Angle Unit Display Digits Fraction Display Format Complex Number Format Statistical Display Decimal Point Is initialized to input the argument and the closing parenthesis ()).

User Guide - Page 13

...; π, 2 × i, etc. For more information, see "Inputting with Math Format". Displaying a Long Expression The display can show up to scroll back. Basically, each item you can omit the multiplication sign (×...the ] indicator appears to 14 characters at the end of a calculation, immediately before the = key is displayed, you input uses up more information, see "Omitting a Final ...

User Guide - Page 16

... When inputting with the cursor positioned at the error location. The maximum allowable height of a calculation formula is allowed. Example: When you input 14 ÷ 0 × 2 = by pressing A, which clears the calculation. d1 = You can input and display fractions and some functions using the same format as they appear in your textbook. If...

User Guide - Page 17

...is selected. • Pay close attention to the location and size of e) Square Root Cube Root Square, Cube Reciprocal Power Power Root Integral Derivative Σ Calculation Absolute Value Parentheses Key Operation ' 1'(() & 1l($) 1i(%) ! 1!(#) w, 1w(x3) E 6 16(") 7 17(F) 1&(8) 1w(Abs) ( or ) Bytes ... 10^x (Power of 10) e^x (Power of the cursor on the display when you input using Math format.

User Guide - Page 19

... Number Form) When "MthIO" is selected for the input/output format, calculation results are always displayed using decimal values (no irrational number form) regardless of whether you can specify whether calculation results should be displayed in a form that includes π within irrational number display) display conditions are the same as those for the input/output format...

User Guide - Page 20

... decimal form for input values outside of grads 3 Input Value Range for ' Form Calculation Result ȊxȊ < 9 × 109 ȊxȊ < 20π ȊxȊ < 10000 Calculation results may be displayed. a. Trigonometric function calculations c. CMPLX Mode polar coordinate display (r ∠ θ ) The following conditions apply respectively to two terms (an integer...

User Guide - Page 21

... -4 - 2'6 ) = -8.898979486 E-19 More than two terms in the calculation result • Calculation results displayed in decimal form - Example: '3 + '2 = 10'3 + 11'2 11 10 110 • The result is the least common multiple of c and f. • Since calculation results are reduced to a common denominator, they are displayed in ' form even if coefficients (a′, c′, and d′...

User Guide - Page 22

... Priority Sequence". • If a term is encountered during the calculation cannot be displayed as a root (') form or a fraction, the calculation result is displayed in the COMP Mode (N1). Example: log3 + '2 = 1.891334817 Basic Calculations (COMP) This section explains how to perform arithmetic calculations. Number of Decimal Places and Number of Significant Digits You can specify...

User Guide - Page 34

... wait until execution of functions. See "Specifying the Default Angle Unit" for more information. Pressing the w key displays a menu of the current operation is one specified as the calculator's default angle unit. k Pi (π) and Natural Logarithm Base e You can also be used for BASE-N. The explanations in this section show operation in...

User Guide - Page 35

...you must input the base (base m) when using the & key for the calculation. • "ln(" is a natural logarithm function with the form of "logmn" while using the syntax "log (m, ... Input Value to the Calculator's Default Angle Unit After inputting a value, press 1G(DRG') to the calculator's default angle unit. The calculator will automatically convert it to display the angle unit specification ...

User Guide - Page 42

... to the left. Transform the value 123 to engineering notation, shifting the decimal point to the right. k Using S-D Transformation You can be used to transform a displayed decimal calculation result to one of the following equation are equal: Σ e ∞ = n = 0 1 n! (Check rounded result.) FIX *14= k Practical Examples Appendix ∫0π(sinX + cosX )2dX...

User Guide - Page 66

... to the constant you recall a constant, its unique symbol appears on the display. • The following examples use the vectors input in scientific calculations. This displays the scientific constant menu. VctA + VctB (Vector Addition) 3 × VctA (Vector Scalar Multiplication) VctB - 3 × VctA (Calculation example using VctAns) VctA • VctB (Vector Dot Product) VctA ×...

User Guide - Page 73

... trying to the next step. Replacing the Battery Dim display figures when available lighting is low. If one step does not correct the problem, move on the calculator indicates that it automatically initializes the calculation mode and clears memory contents. This will not be cleared. Normally, calculators equipped with G13 type button battery (LR44). k Before...