Introduction
This manual provides detailed instructions for the proper use and maintenance of your Casio FX-260 Solar II Scientific Calculator. Please read this manual thoroughly to ensure optimal performance and longevity of your device.
Image: Two Casio FX-260 Solar II Scientific Calculators. These calculators feature a solar panel, a digital display, and a standard scientific calculator key layout, including numerical keys, arithmetic operators, and scientific functions like sine, cosine, and tangent.
Setup
The Casio FX-260 Solar II Scientific Calculator is primarily solar-powered. It does not require battery installation under normal lighting conditions. For optimal performance, ensure the solar panel located above the display is exposed to sufficient light.
- Initial Use: Upon first use, or after prolonged storage in darkness, expose the calculator to light for a few minutes to activate.
- Power On: Press the ON button to turn on the calculator.
- Power Off: The calculator features an automatic power-off function to conserve energy. To manually turn off, press SHIFT then OFF (which is typically the AC button).
Image: Close-up view of the calculator's display area. The display shows numerical output and indicators such as "SHIFT", "MK DEG", and "SCI SD", which denote the current mode and settings of the calculator.
Operating Instructions
The FX-260 Solar II offers 144 built-in mathematical functions. Below are general guidelines for common operations.
Basic Arithmetic Operations
- Addition, Subtraction, Multiplication, Division: Enter numbers and use the +, -, ×, ÷ keys. Press = for the result.
- Clear Entry/All Clear: Press AC to clear the current entry or calculation. Pressing AC twice may clear all memory.
- Backspace: Use the DEL key to delete the last entered digit.
Scientific Functions
Many scientific functions are accessed directly or by using the SHIFT key.
- Trigonometric Functions (sin, cos, tan): Enter the angle value, then press the corresponding function key. Ensure the correct angle mode (DEG, RAD, GRA) is selected using the MODE key.
- Inverse Trigonometric Functions (sin-1, cos-1, tan-1): Press SHIFT, then the respective trigonometric function key.
- Logarithms (log, ln): Use the log or ln keys.
- Powers and Roots (x², √, xy, 3√): These functions are available directly or via the SHIFT key.
- Fractions: Use the d/c or a b/c keys for fraction input and conversion.
Memory Functions
- Store to Memory (M+): To add a value to memory, enter the value and press M+.
- Recall from Memory (MR): Press MR to recall the stored value.
- Clear Memory: Press SHIFT then M-C (often combined with MR or M+).
Image: The Casio FX-260 Solar II calculator displayed without its slide-on hard case. This view highlights the arrangement of its 144 functions, including numerical keys, arithmetic operations, and scientific functions, along with the solar panel and digital display.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the calculator. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the calculator in its provided slide-on hard case to protect it from dust, scratches, and impact. Avoid storing in extreme temperatures or direct sunlight for extended periods.
- Solar Panel: Keep the solar panel clean and unobstructed to ensure continuous power supply.
Image: The Casio FX-260 Solar II calculator being slid into its protective white hard case. The case is designed to shield the calculator from damage during transport and storage.
Troubleshooting
- Display is blank or dim: Ensure the solar panel is exposed to sufficient light. If the issue persists, the internal backup battery (if present in your model) might be depleted.
- Calculator is unresponsive: Try pressing the AC button. If still unresponsive, expose it to bright light for a few minutes.
- Incorrect results: Check the angle mode (DEG, RAD, GRA) for trigonometric calculations. Verify input values and function usage.
- Error messages: Refer to the specific error code (if displayed) in the full Casio FX-260 Solar II manual for detailed explanations. Common errors include "Math Error" for invalid operations or "Stack Error" for complex calculations exceeding capacity.
Specifications
| Feature | Detail |
|---|---|
| Model Number | FX260SOLARII |
| Dimensions (L x W x H) | 5 x 2.9 x 0.6 inches |
| Item Weight | 0.635 ounces |
| Power Source | Solar Powered |
| Calculator Type | Scientific / Engineering |
| Number of Functions | 144 built-in functions |
| Screen Size | 5 Inches (diagonal visible screen) |
Image: A detailed view of the Casio FX-260 Solar II calculator with measurement lines indicating its physical dimensions: approximately 2.9 inches wide and 5 inches long. This image helps visualize the compact size of the device.
Warranty and Support
For warranty information and customer support, please refer to the official Casio website or the documentation included with your purchase. Casio provides support for its products to ensure customer satisfaction.
Manufacturer: Casio Computer Co., Ltd.
Date First Available: August 17, 2023
