Introduction
This manual provides detailed instructions for the CASIO fx-JP900CW-N scientific calculator, a professional model within the CLASSWIZ series. Designed for ease of use, it features a high-resolution full-dot LCD with Japanese display support and over 700 functions, making it suitable for a wide range of academic and professional applications.
Image: The CASIO fx-JP900CW-N calculator, highlighting its modern design and CLASSWIZ series affiliation, recognized with the iF DESIGN AWARD 2023.
Setup
Power Source
The fx-JP900CW-N calculator utilizes a two-way power system, operating on both solar power and a single LR44 button cell battery. Ensure the battery is correctly installed for reliable operation in low-light conditions.
Initial Power On
- Press the [ON] key to turn on the calculator.
- If the display is dim or blank, ensure sufficient light for solar power or check the LR44 battery.
Basic Settings
Upon first use or after a battery change, you may need to adjust basic settings such as language and display contrast. Refer to the on-screen menu for these adjustments.
Operating Instructions
Key Layout and Basic Operation Flow
The calculator features an intuitive key layout designed for efficient operation. Keys are color-coded to distinguish between operation keys and input keys, and sub-functions are clearly indicated.
Image: Key layout illustrating the operational sequence: 1. Power On, 2. Access HOME menu, 3. Navigate with cursor, 4. Select function, 5. Input values, 6. Execute.
Image: Detailed view of the calculator keys, highlighting the distinction between operation keys (pink) and input keys (blue), and the clear display of sub-functions.
High-Resolution Display
The fx-JP900CW-N is equipped with a high-resolution, 4-level grayscale full-dot LCD, offering clear visibility and easy navigation through menus and calculations. It supports natural mathematical expression display, showing fractions, roots, and other symbols as they appear in textbooks.
Image: The calculator's display demonstrating the icon-based menu, 4-level grayscale rendering, and natural mathematical input/output for expressions like sin(30) + integral.
Main Functions Overview
The calculator offers over 700 functions, including:
- Statistical Calculations: Perform single-variable and two-variable statistical calculations.
- Equation Solving: Solve simultaneous linear equations (2 to 4 variables) and higher-order equations (2nd to 4th degree).
- Complex Number Calculations: Execute four basic arithmetic operations, find conjugate complex numbers, absolute values, and arguments.
- Unit Conversions: Supports various unit conversions for length, mass, time, and other measurements.
Image: A visual summary of the calculator's main functions, displaying example screens for statistical calculations, equation solving, complex number operations, and unit conversions.
Detailed Function Guides
Statistical Calculations
Input data to perform single-variable and two-variable statistical calculations. View a list of statistical values for the results.
Image: Screen showing statistical calculation output, including sum, mean, and standard deviation.
Equation Solving
Solve simultaneous linear equations with up to four variables and polynomial equations up to the fourth degree.
Image: Screen showing the input of a polynomial equation and its calculated root.
Complex Number Calculations
Perform arithmetic operations with complex numbers and determine properties such as absolute value and argument.
Image: Screen showing the result of an addition of two complex numbers.
Unit Conversions
Convert values between various units, including standard and traditional measurement systems.
Image: Screen showing a unit conversion example, converting 120 square meters to a different unit (likely 'tsubo' in Japanese context).
Vector and Matrix Calculations
Perform operations with vectors and matrices, including dot products, angles, and matrix manipulations.
Image: Screen showing vector dot product and angle calculation.
Image: Screen showing matrix input and display.
Other Advanced Functions
The fx-JP900CW-N includes additional advanced features:
- Table Calculation: Generate numerical tables based on functions.
- Engineering Notation: Perform calculations using engineering symbols (kilo, mega, milli, nano).
- Inequality Calculation: Solve inequalities of various degrees.
- Probability Distribution: Access calculations for three types of distributions and seven calculation methods.
- Math Box: Tools for random number generation (dice, coin toss), number line, and circle calculations.
- Integer Extraction: Extract the integer part of a decimal number.
- Truth/False Discrimination: Evaluate logical expressions.
Image: A composite image showcasing various advanced functions: table calculations, engineering notation, inequality solving, and probability distribution calculations.
Maintenance
Cleaning
To clean the calculator, wipe it with a soft, dry cloth. Do not use abrasive cleaners, solvents, or wet cloths, as these can damage the surface or internal components.
Battery Replacement
When the display becomes dim or calculations are erratic, the LR44 battery may need replacement. To replace the battery:
- Turn off the calculator.
- Carefully remove the battery cover on the back of the unit.
- Remove the old LR44 battery and insert a new one, ensuring correct polarity (+/-).
- Replace the battery cover securely.
Storage
Store the calculator in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. Avoid placing heavy objects on top of the calculator to prevent damage to the keys or display.
Troubleshooting
Calculator Does Not Turn On
- Ensure the [ON] key is pressed firmly.
- Check the battery. Replace the LR44 battery if it is depleted.
- Ensure adequate light for solar power.
Incorrect Calculation Results
- Verify the input values and the selected function mode.
- Check if the correct angle unit (degrees, radians, grads) is selected.
- Clear all memory and reset settings if necessary (refer to the full user guide for reset procedures).
Display Issues
- Adjust the display contrast setting.
- If the display is blank, check the power source as described above.
Specifications
| Feature | Description |
|---|---|
| Brand | CASIO |
| Model Number | fx-JP900CW-N |
| Color | Black |
| Material | Plastic |
| Product Dimensions | 16.2 x 7.7 x 1.07 cm |
| Weight | 95 g |
| Calculator Type | Scientific Calculator |
| Power Source | Two-way power (Solar + LR44 x 1) |
| Display | High-resolution full-dot LCD, 4-level grayscale, Japanese display support |
| Functions | Over 700 functions (including statistics, equations, complex numbers, unit conversions, vectors, matrices, probability distributions) |
Warranty and Support
For detailed warranty information, product support, and additional resources, please refer to the documentation included with your calculator or visit the official CASIO website. The website typically provides FAQs, downloadable manuals, and contact information for customer service.
