1. Introduction
This manual provides detailed instructions for the proper use and maintenance of your Casio FX-350MS 2nd Generation Scientific Calculator. Please read this manual thoroughly before using the calculator to ensure correct operation and to maximize its functionality. Keep this manual for future reference.
Image 1.1: Front view of the Casio FX-350MS 2nd Gen Scientific Calculator. This image displays the calculator's full keypad, 2-line display, and overall sleek black design.
2. Setup
2.1 Initial Inspection
Upon unpacking, verify that all components are present: the calculator unit, a slide-on hard case, a warranty card with serial number, a warranty term sheet, and this user manual.
2.2 Power Source
The Casio FX-350MS 2nd Gen calculator operates on a single button cell battery. The battery is typically pre-installed. If the display is dim or unresponsive, the battery may need replacement (refer to Section 4.2).
2.3 Attaching the Hard Case
The calculator comes with a slide-on hard case designed to protect the unit from damage. Slide the calculator into the case from the bottom until it clicks securely into place. To remove, gently slide it out.
Image 2.1: The Casio FX-350MS 2nd Gen calculator with its protective slide-on hard case. The case provides durability and protection during transport.
2.4 Power On/Off
- To turn on: Press the [ON] key.
- To turn off: Press [SHIFT] then [AC] (OFF). The calculator also features an auto-power off function to conserve battery life.
3. Operating Instructions
3.1 Keypad Layout and Display
The calculator features a color-coded keypad for easy differentiation of functions. The 2-line display shows both the input expression and the calculation result simultaneously.
Image 3.1: Side profile of the Casio FX-350MS 2nd Gen calculator, highlighting its slim design and curved edges for comfortable handling.
3.2 Basic Arithmetic Operations
Enter numbers using the numeric keys and perform operations using [+], [-], [×], [÷]. Press [=] to get the result.
3.3 Scientific Functions
The calculator supports 240 functions, including:
- Trigonometrical Functions: sin, cos, tan, and their inverses (sin-1, cos-1, tan-1).
- Logarithmic Functions: log, ln, 10x, ex.
- Power and Root Functions: x2, x3, xy, √, 3√, y√.
- Statistical Calculations: Standard deviation, regression analysis.
- Permutation and Combination: nPr, nCr.
- Fraction Calculations: a b/c, d/c.
- Angle Unit Conversion: Degrees, Radians, Gradians.
3.4 Mode Selection
Press the [MODE] key to select different calculation modes (e.g., COMP for basic arithmetic, SD for standard deviation, REG for regression). Refer to the on-screen indicators for the current mode.
3.5 Memory Functions
The calculator includes independent memory and variable memories:
- M+ / M-: Adds/subtracts the displayed value to/from the independent memory.
- STO (Store): Stores a value into a variable (A-F, X, Y, M).
- RCL (Recall): Recalls a value from a variable.
4. Maintenance
4.1 Cleaning
Wipe the calculator with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners. The keys feature water-resistant printing for durability.
4.2 Battery Replacement
When the display becomes dim or calculations are incorrect, the button cell battery may need replacement. Open the battery compartment on the back of the unit, replace with a new button cell (e.g., LR44 or equivalent), and ensure correct polarity. Dispose of old batteries responsibly.
Image 4.1: Rear view of the Casio FX-350MS 2nd Gen calculator, showing the battery compartment and product information label.
4.3 Storage
Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. Always use the provided hard case to protect it from impacts, as it features a drop-resistant body.
5. Troubleshooting
5.1 Display Issues
- Dim Display: Replace the battery (refer to Section 4.2).
- No Display: Ensure the calculator is turned on. If still unresponsive, replace the battery.
5.2 Incorrect Results
- Check Mode: Ensure the calculator is in the correct mode for your calculation (e.g., DEG for degrees, RAD for radians).
- Syntax Error: Review your input expression for correct mathematical syntax.
- Memory Clear: Clear all memory and variables if unexpected values are affecting calculations.
5.3 Resetting the Calculator
If the calculator behaves erratically, a full reset may be necessary. Press [SHIFT] then [CLR] (Clear) and select the desired clear option (e.g., Mode, Mem, All). Clearing 'All' will return the calculator to its initial default settings.
6. Specifications
| Brand | Casio |
| Model Number | FX-350MS-2 |
| Functions | 240 |
| Display | 2-Line Display |
| Power Source | Button Cell Battery |
| Material | Plastic |
| Color | Black |
| Item Weight | 95 g |
| Dimensions (LxWxH) | 16.2 x 7.7 x 1.1 Centimeters |
| Country of Origin | China |
Image 6.1: Diagram illustrating the dimensions of the Casio FX-350MS 2nd Gen calculator, showing its length of 16.2 cm and width of 7.7 cm.
7. Warranty and Support
7.1 Manufacturer Warranty
This product comes with a 3-year All India Manufacturer Warranty. Please retain your purchase receipt and the warranty card with the serial number for warranty claims.
7.2 Customer Support
For any warranty or service-related issues, please contact Casio customer care. Contact details can be found on the warranty term sheet included with your product or on the official Casio India website.
