Introduction
Thank you for choosing the JAWOO DS-200ml 12-Digit Desktop Calculator. This manual provides detailed instructions for the proper setup, operation, and maintenance of your new calculator. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.
Safety Information
- Do not expose the calculator to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping the calculator or subjecting it to strong impacts.
- Keep the calculator away from water and other liquids.
- Do not attempt to disassemble or modify the calculator. This will void the warranty.
- Dispose of batteries according to local regulations.
Package Contents
Ensure all items are present in the package:
- 1 x JAWOO DS-200ml Desktop Calculator
- 1 x AA Battery (pre-installed or included separately)
- 1 x Instruction Manual (this document)
Product Overview
Familiarize yourself with the calculator's components and button layout.
Image: Front view of the JAWOO DS-200ml calculator with numbered labels pointing to key functions.
- GT (Grand Total): Displays the grand total of all calculations.
- Backspace (←): Deletes the last entered digit.
- CE (Clear Entry): Clears the last entered number or calculation error.
- ON/C (On/Clear): Turns the calculator on or clears all entries and memory.
- AC (All Clear): Clears all entries and memory.
- MC (Memory Clear): Clears the memory register.
- MR (Memory Recall): Recalls the value stored in the memory register.
- M- (Memory Minus): Subtracts the displayed value from the memory register.
- M+ (Memory Plus): Adds the displayed value to the memory register.
- % (Percent): Percentage calculation key.
- √ (Square Root): Calculates the square root of the displayed number.
- +/- (Sign Change): Changes the sign of the displayed number (positive/negative).
Setup
Power Source
Your JAWOO DS-200ml calculator operates on dual power: solar energy and one AA battery. The solar panel provides power in well-lit conditions, while the AA battery acts as a backup for low-light environments or when solar power is insufficient.
Image: The calculator highlighting its solar panel and AA battery compartment, indicating dual power functionality.
Battery Installation
To install or replace the AA battery:
- Turn the calculator over to access the battery compartment on the back.
- Slide the battery compartment cover open.
- Insert one AA battery, ensuring the positive (+) and negative (-) terminals align correctly with the markings inside the compartment.
- Close the battery compartment cover securely.
Video: Demonstration of basic calculator functions, including turning on/off, performing calculations, and accessing the battery compartment.
Operating Instructions
Turning On/Off
- Press the ON/C button to turn the calculator on.
- The calculator will automatically shut off after approximately 8 minutes of inactivity to conserve power.
Basic Calculations
Perform standard arithmetic operations:
- Enter the first number.
- Press the desired operation key (+, -, ×, ÷).
- Enter the second number.
- Press the = key to display the result.
Image: A close-up view of the calculator's large, responsive buttons, designed for comfortable and accurate input.
Memory Functions
- M+: Adds the displayed value to the memory.
- M-: Subtracts the displayed value from the memory.
- MR: Recalls the current value stored in memory.
- MC: Clears the memory.
Special Functions
- %: For percentage calculations. E.g., to calculate 10% of 200: Enter 200 × 10 %.
- √: To find the square root of a number. E.g., to find √25: Enter 25 √.
- +/-: To change the sign of the displayed number.
- GT: To display the grand total of all calculations performed since the last clear.
Maintenance
- Cleaning: Wipe the calculator with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. If not used for an extended period, consider removing the battery to prevent leakage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Calculator does not turn on. | Insufficient light for solar power, or dead/incorrectly installed battery. | Ensure adequate lighting for the solar panel. Check battery installation and replace if necessary. |
| Display shows "ERROR" or incorrect results. | Calculation error, overflow, or incorrect input. | Press CE to clear the last entry or ON/C (or AC) to clear all. Re-enter the calculation carefully. |
| Buttons are unresponsive. | Temporary software glitch or low power. | Press ON/C to reset. Ensure sufficient power from solar or battery. |
Specifications
Image: The calculator's large, clear 12-digit LCD screen with a 30-degree viewing angle for enhanced readability.
Image: The JAWOO DS-200ml calculator with its physical dimensions clearly marked.
- Model: DS-200ml
- Display: 12-Digit Large LCD
- Power Source: Dual Power (Solar & 1x AA Battery)
- Material: ABS Plastic
- Dimensions (L x W x H): Approximately 6.30 x 6.30 x 1.10 inches (16 x 16 x 2.8 cm)
- Weight: Approximately 8.4 ounces (238 grams)
- Auto-off: After approximately 8 minutes of inactivity
- Visual Angle: 30° tilted display for improved readability
Warranty and Support
The JAWOO DS-200ml Desktop Calculator comes with a 1-year free warranty against quality problems from the date of purchase. This warranty covers manufacturing defects and material flaws under normal use.
For technical support, troubleshooting assistance, or warranty claims, please contact JAWOO customer service through the retailer where the product was purchased. Please have your purchase receipt and product model number ready when contacting support.