Casio FX-991ES Support Question
Casio FX-991ES Support Question
Find answers below for this question about Casio FX-991ES.Need a Casio FX-991ES manual? We have 2 online manuals for this item!
Question posted by melmoomine on April 23rd, 2015
Fixing Dropped Calculator.. Casio Fx-991es
How to fix dropped calculator (casio fx-991ES) it is not working.
Current Answers
Answer #1: Posted by TechSupport101 on April 23rd, 2015 9:03 AM
TechSupport101
Member since:
May 24th, 2013 Points: 12,171,305
Member since:
May 24th, 2013 Points: 12,171,305
The best way is to open it up and conduct a visual inspection for physical damages. The battery may either have gone out of place or requires cleaning.
Related Casio FX-991ES Manual Pages
User Guide - Page 4
... Guide and the separate Appendix are subject to change without notice. • In no event shall CASIO Computer Co., Ltd. E-2 REPLAY
• The displays and illustrations (such as shown in this...by the number key operation (1) before it means you want to initialize the calculator and return the calculation mode and setup to their initial default settings. Specify the angle unit in ...
User Guide - Page 5
...or dispose of it by burning it. Keep this manual handy for this calculator in
this calculator.
Caution
This symbol is used to read the following safety precautions before ...using a battery can cause it to become shorted.
Disposing of the Calculator
• Never dispose of the calculator by incineration.
• Improperly using this manual. Safety Precautions
Be sure...
User Guide - Page 6
... or lost completely. Wring out all important data.
• Avoid use and storage of the calculator in areas subjected to large amounts of humidity or dust. A dead battery can damage internal circuitry.
• Never drop the calculator or otherwise subject it might be splashed by water or exposed to large amounts of humidity...
User Guide - Page 7
...you press N) is low. k Turning Power On and Off
• Press O to turn off the calculator. Use d and e to turn on the display.
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. k Adjusting Display Contrast
1N(SETUP)c6(]CONT') This displays the ...
User Guide - Page 8
... recall the variable's value. The alpha input mode will be replayed, or there is in effect. A fixed number of a variable name to the variable. The calculator is in effect. The calculator is in the MATRIX Mode. Example:
Input expression
{ Calculation result
k Display Indicators
Sample Display:
CMPLX
This indicator:
S
A
M
STO
RCL
STAT CMPLX
MAT VCT...
User Guide - Page 9
... To select the CMPLX Mode, for example, press 2.
Select this type of operation: General calculations Complex number calculations Statistical and regression calculations Calculations involving specific number systems (binary, octal, decimal, hexadecimal) Equation solution Matrix calculations Generation of calculation that corresponds to the mode you want to execute, the display may show...
User Guide - Page 10
... rounded off to 9) controls the number of significant digits for displayed calculation results.
Specifying the Input/Output Format
For this input/output format: Math Linear
Perform this key operation: 1N6(Fix)0-9 1N7(Sci)0-9 1N8(Norm)1(Norm1) or 2(Norm2)
Calculation Result Display Examples • Fix: The value you specify (from 0 to the specified digit before...
User Guide - Page 11
... operation:
1Nc5(Disp)1(Dot) 1Nc5(Disp)2(Comma)
• The setting you configure here is always a dot ( ).
The decimal point for input values is applied for calculation results
. E-9 To specify this: Show FREQ Column Hide FREQ Column
Perform this key operation: 1Nc4(STAT)1(ON) 1Nc4(STAT)2(OFF)
Specifying the Decimal Point Display...
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...
User Guide - Page 13
... input up to input (like 1s(sin-1)) also uses only one byte. Inputting the 15th character causes the expression to shift to the right of a calculation, immediately before the = key is pressed. This will cause the ' indicator to appear to the left and view the hidden part by pressing the d key...
User Guide - Page 14
... the overwrite mode is selected. • The initial default for more information. • The calculator automatically changes to the insert mode whenever you change to the overwrite mode when you need it....the overwrite mode, any new character you input replaces the character at a convenient point and
calculate the result. When there are inputting it becomes 369 × 12
LINE
369*13
Y
...
User Guide - Page 15
... correct the expression 369 × × 12 so it becomes
369 × 12 LINE Insert Mode:
369**12
dd
Y Overwrite Mode:
369**12
ddd
Y
Correcting a Calculation Example: To correct cos(60) so it becomes sin(60) LINE Insert Mode:
c60)
dddY
s Overwrite Mode:
c60)
dddd
s Inserting Input into...
User Guide - Page 16
... and display fractions and some functions using the same format as they appear in your textbook. This will become impossible if the height of the calculation you can also exit the error screen by mistake instead of 14 ÷ 10 × 2 = Use the insert mode for the following operation. If this...
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 9 13 6 4 4 4 9 4 5 4 9 8 6 8 4 1
Math Format Input Examples • The following operations are...
User Guide - Page 18
... cursor to view the entire input expression again, press A and then press e.
Example 3: To input (1 + 2 )2 × 2 =
5
MATH
Math
(1+'2c5e)
w*2=
• When you press = and obtain a calculation result using Math format, you can incorporate part of an input expression (a value, an expression within parentheses, etc.) into a function.
Math
1Y(INS)
This changes...
User Guide - Page 19
...
Math
2
!2e+!81=
E-17 Note
• When "LineIO" is selected for S-D conversion.
Original Expression:
Function Key Operation
Integral
7
Resulting Expression
Derivative
17(F)
Σ Calculation 1&(8)
You can specify whether calculation results should be displayed in a form that includes expressions like '2 and π (irrational number form). • Pressing = after inputting...
User Guide - Page 22
... of Decimal Places and Number of Significant Digits You can specify a fixed number of Display Digits".
Example: 7 × 8 - 4 × 5 = 36
LINE
7*8-4*5=
• The calculator automatically judges the calculation priority sequence.
Example: 1 ÷ 6 =
LINE
Initial default setting (Norm1)
FIX
3 decimal places (Fix3)
SCI
3 significant digits (Sci3) • For more information...
User Guide - Page 39
... result θ is displayed in the range of -180° < θ < 180°. • Calculation result θ is displayed using the following formula.
Σ( f(x), a, b) = f(a) + f(a + 1) + .... + f(b)
f(x): Function of -1 × 1010 < a < b < 1 × 1010.
• The calculation step is fixed at 1. • ∫(, d/dx(, Pol(, Rec(, and Σ( cannot be performed in the COMP...
User Guide - Page 41
... of significant digits specified by the number of display digits setting. Example: 200 ÷ 7 × 14 = 400 LINE
200/7*14=
(Specifies three decimal places.) FIX 1N6(Fix)3
(Calculation is rounded to 10 digits. Rounding Function (Rnd) This function rounds the value or the result of the expression in the function's argument to the...
User Guide - Page 42
...n! Formats Supported for S-D Transformation S-D transformation can be used to transform a displayed decimal calculation result to engineering notation. Appendix
Transform the value 1,234 to engineering notation, shifting the .... Performing S-D transformation again converts back to the left.
(Check rounded result.)
FIX
*14=
k Practical Examples
Appendix
∫0π(sinX + cosX )2dX = ...
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