Casio JF-100MS Support Question
Casio JF-100MS Support Question
Find answers below for this question about Casio JF-100MS.Need a Casio JF-100MS manual? We have 1 online manual for this item!
Question posted by kavinstuckly on March 17th, 2021
Casio Jf-100ms Replacement Battery
What is the replacement battery for solar cell battery LR44X1 DC 1.5v in my Casio JF-100MS 10 digits two way power calculator?
Current Answers
Answer #1: Posted by Troubleshooter101 on March 18th, 2021 3:16 AM
Troubleshooter101
Member since:
September 30th, 2015 Points: 2,927,060
Member since:
September 30th, 2015 Points: 2,927,060
I just replaced mine. It IS a Casio JF-100MS. The LR44 battery listed is also a #357. Take out the 3 black screws on the back - 2 at the top and one at the bottom. The back comes straight off up from the body if you are looking at the back - (keys pointing down).
You need a tiny flat blade screwdriver to get it into the groove between the back & body. Its easier to insert about 1/4 of the way down from the top between the top of the keys and the display where the grey color of the back wraps around the front in a small grey band below the display.
Slowly work the screwdriver around the back perimeter to get it to release from the body. Once off you will see the back of the circuit board and the small chrome cradle cover around the battery. You push the battery out towards the outside which is mostly open except for a very small tab. Mine was very corroded.
After pushing the battery out I cleaned the cage cover and the circuit board where the battery touches it until shiny. Insert new battery - lettering up not down on circuit board - making sure contact with board and cage is OK. Set cover over circuit board into body, carefully squeeze along the sides of the cover to pop-it in tight to the body all around. Then replace the 3 small screws you originally took out carefully.
You need a tiny flat blade screwdriver to get it into the groove between the back & body. Its easier to insert about 1/4 of the way down from the top between the top of the keys and the display where the grey color of the back wraps around the front in a small grey band below the display.
Slowly work the screwdriver around the back perimeter to get it to release from the body. Once off you will see the back of the circuit board and the small chrome cradle cover around the battery. You push the battery out towards the outside which is mostly open except for a very small tab. Mine was very corroded.
After pushing the battery out I cleaned the cage cover and the circuit board where the battery touches it until shiny. Insert new battery - lettering up not down on circuit board - making sure contact with board and cage is OK. Set cover over circuit board into body, carefully squeeze along the sides of the cover to pop-it in tight to the body all around. Then replace the 3 small screws you originally took out carefully.
https://www.fixya.com/support/t24885148-replace_battery_jf_100ms_calculator
Thanks
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Troublshooter101
Related Casio JF-100MS Manual Pages
User Guide - Page 1
fx-100MS fx-115MS (fx-912MS)
User's Guide 2
(Additional Functions)
kfx-912MS owners Please be sure to read the important notice of this manual. E
http://world.casio.com/edu_e/
User Guide - Page 2
Unit 6, 1000 North Circular Road, London NW2 7JD, U.K. Important!
Please keep your manual and all information handy for future reference. CASIO ELECTRONICS CO., LTD.
User Guide - Page 3
...8 kConjugate of a Complex Number 9
Base-n Calculations 9
Statistical Calculations 11
Normal Distribution 11
Differential Calculations 12
Integration Calculations 13
Power Supply 14
Specifications 16
See the "fx-95MS/fx-100MS/fx-115MS/fx-570MS/fx991MS User's Guide" for details about the following items. Removing and Replacing the Calculator's Cover/ Safety Precautions/ Handling Precautions...
User Guide - Page 4
... the initial defaults shown below . • The following table shows the modes and required
operations for the fx-100MS and fx-115MS.
fx-100MS and fx-115MS Modes
To perform this type of calculation:
Perform this key operation:
To enter this manual, the name of the mode you must first enter the correct...
User Guide - Page 5
...cannot make changes to the angle unit or other display format (Disp) settings while the calculator is in the BASE Mode.
• The COMP, CMPLX, SD, and REG modes ... with the angle unit settings.
• Be sure to check the current calculation mode (SD, REG, COMP, CMPLX) and angle unit setting (Deg, Rad, Gra) before beginning a calculation. Press A [(COPY). E-3 COMP F 1
k Replay Copy
Replay copy ...
User Guide - Page 6
...that you want, without the need to another mode, or turn off the calculator. • You can be used in replay memory starting from the currently displayed... the COMP Mode and CMPLX Mode only.
• The variable input screen shows the values currently assigned to the variables.
• Example: Calculate the result for Y = X2 + 3X - 12 when X = 7 (Result: 58 ), and when X = 8 (Result: 76...
User Guide - Page 7
... the F key to enter the COMP Mode when you to use engineering symbols inside your calculations. Gravitational acceleration is D = 9.8 m/s2. (Result: A = 16.8)
1 B ҃ AC - 2 DC 2
p 2 p u p 1 - p h - E-5 p k ,
R 1 \ 2 T - p k K
A I
(B?)
14 =
(A?)
]
(C?)
2 =
(D?)
9 l 8 =
[ [
(A?)
A I
• The SOLVE function finds approximations based on engineering symbols makes it possible...
User Guide - Page 8
...be used when engineering symbols are turned on , even standard (non-engineering) calculation results are displayed using engineering symbols.
Disp
1
• Press 1. E-6...A t A m A N A n A p A f
Unit
103 106 109 1012 10-3 10-6 10-9 10-12 10-15
• For displayed values, the calculator selects the engineering symbol that makes the numeric part of the value fall within the range of...
User Guide - Page 9
...; Example: (2ѿ3i)ѿ(4ѿ5i) ҃ 6ѿ8 i
(Real part 6) (Imaginary part 8 i)
2 + 3 i + 4 + 5 i = A r
E-7 CMPLX F 2
• The current angle unit setting (Deg, Rad, Gra) affects CMPLX Mode calculations. Variables D, E, F, X, and Y are stored in replay memory in the upper right corner of the result.
• You can use variables A, B, C, and M only in the CMPLX...
User Guide - Page 10
... ↔ Polar Form Display
You can use the operation described below to convert a rectangular form complex number to its rectangular form. k Absolute Value and Argument Calculation
Supposing the imaginary number expressed by the rectangular form z = a + bi is rЄ.
• Example 1: To determine the absolute value (r) and argument () of the...
User Guide - Page 11
... - 2.34i ) A S R 1 l 23 + 2 l 34 i T = A r
Base-n Calculations BASE
Use the F key to perform calculations using binary, octal and hexadecimal values.
• You can specify the default number system to be applied to all...
• You cannot use scientific functions in binary, octal, decimal, and hexadecimal calculations.You cannot input values that include decimal part and an exponent.
• If...
User Guide - Page 12
...-n calculations: ...FFFFFFFF 0 Ϲ x Ϲ 7FFFFFFF
• Example 1: To perform the following calculation and produce an octal result:
76548 ÷ 1210 ҃ 5168
Octal mode:
t ...calculation and produce a binary result:
101112 ѿ 110102 ҃1100012
Binary mode:
t b
0. o
l l l 4 (o) 7654 \ l l l 1 (d) 12 =
• Example 3: To perform the following calculation...
User Guide - Page 13
... enter the SD Mode when you want to convert a value from a number system whose calculation range is greater than the calculation range of the resulting number system.
• The message "Math ERROR" indicates that the result has too many digits (overflow). • Example 4: To convert the value 2210 to its binary equivalent.
SD...
User Guide - Page 14
... expression: the function of a function. A J expression P a P ∆x T
• Example: To determine the derivative at which the differential coefficient is calculated, and the change in x is ∆x = 2 × 10-4 (Result: 7 )
A J 3 p x K , 5 p x + 2 P 2 P 2 e D 4 T =
E-12 COMP F 1
• Three inputs are required for the function y = 3x2- 5x + 2, when the increase or decrease in...
User Guide - Page 15
... substitutes an appropriate value for ∆x if you want.
COMP F 1
• The following four inputs are cleared while an integration calculation is the number of partitions (equivalent to N = 2n) for integration calculations: a function with the variable x;
a and b, which is being performed internally. and n, which define the integration range of a function. • You...
User Guide - Page 16
...-115MS The TWO WAY POWER system actually has two power supplies: a solar cell and a G13 Type (LR44) button battery. Screw
2 Remove the old battery.
3 Wipe off the sides of new battery with the positive k side facing up (so you can operate only when relatively bright light is present. Normally, calculators equipped with a solar cell alone can see it).
4 Replace the back cover...
User Guide - Page 17
... do not perform any operation for about six minutes.
When this happens, press 5 to turn power back on.
fx-100MS This calculator is powered by a single AA-size battery.
• Replacing the Battery
Dim figures on the display of the calculator when the battery is low can result in place and then remove the back cover. Screw
3 Remove the...
User Guide - Page 18
... owners The names fx-912MS (Japan domestic model name) and fx-115MS (international model name) apply to the description of flashing cursor. Specifications
Power Supply: fx-100MS: Single AA-size battery (R6P(SUM-3)) fx-115MS: Solar cell and a single G13 Type button battery (LR44)
Battery Life: fx-100MS: Approximately 17,000 hours continuous display of fx-115MS.
E-16
User Guide - Page 19
CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan
SA0206-D Printed in China CA 310074C-1
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