Introduction
This manual provides detailed instructions for the proper use and maintenance of your CASIO JH-12VT 12-Digit Desktop Calculator. Please read this manual thoroughly to ensure optimal performance and longevity of your device. Keep this manual for future reference.
Product Features
- Extra-large display: For enhanced readability of numbers.
- Tax calculation function: Dedicated keys for easy tax calculations.
- Status display: Indicators for current operation status.
- 12-digit capacity: Handles extensive numerical operations.
- Dual Power Source: Operates on both solar power and battery.
Image: Front view of the CASIO JH-12VT 12-Digit Desktop Calculator, showcasing its extra-large display, key layout, and dual power indicators.
Setup
Power Source
The CASIO JH-12VT calculator is equipped with a dual power system, utilizing both solar power and a battery. Under sufficient lighting, the calculator will operate using solar power. In low-light conditions or when solar power is insufficient, it automatically switches to battery power.
Battery Installation (if replacement is needed)
- Ensure the calculator is turned off.
- Locate the battery compartment cover on the back of the unit.
- Using a small screwdriver, carefully remove the screw and slide off the cover.
- Insert a new LR44 button cell battery, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Replace the cover and secure it with the screw.
Initial Power On
Press the AC (All Clear) button to turn on the calculator and clear any previous entries. The display should show '0'.
Operating Instructions
Basic Calculations
- Addition (+): Enter the first number, press +, enter the second number, press =.
- Subtraction (-): Enter the first number, press -, enter the second number, press =.
- Multiplication (×): Enter the first number, press ×, enter the second number, press =.
- Division (÷): Enter the first number, press ÷, enter the second number, press =.
Memory Functions
- M+ (Memory Plus): Adds the displayed value to the memory.
- M- (Memory Minus): Subtracts the displayed value from the memory.
- MRC (Memory Recall/Clear): Press once to recall the memory value. Press twice to clear the memory.
Tax Calculation
The calculator features dedicated keys for tax calculations. The tax rate must be set prior to use.
- Setting the Tax Rate: Press SET (if available, or consult specific model instructions for tax rate setting), enter the tax rate percentage, then press TAX+ or TAX- to save.
- TAX+ (Add Tax): Enter the original amount, then press TAX+ to display the amount including tax.
- TAX- (Subtract Tax): Enter the amount including tax, then press TAX- to display the original amount before tax.
Grand Total (GT)
Press the GT key to display the grand total of all results accumulated since the last AC or GT clear operation.
Clear Functions
- AC (All Clear): Clears all entries, memory, and operations, resetting the calculator to its initial state.
- C (Clear Entry): Clears the last entered number or the current calculation entry without affecting previous operations or memory.
Maintenance
Cleaning
To clean the calculator, wipe it with a soft, dry cloth. For stubborn dirt, lightly dampen the cloth with water and a mild detergent, then wipe dry immediately. Do not use strong solvents or abrasive cleaners, as they may damage the casing or display.
Storage
Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. Avoid placing heavy objects on top of the calculator to prevent damage to the keys or display.
Troubleshooting
| Problem | Solution |
|---|---|
| Display is blank or dim. | Ensure sufficient lighting for solar power. If in low light, replace the battery. Press AC to reset. |
| Incorrect calculation results. | Press AC to clear all previous operations. Re-enter the calculation carefully. Check if memory (M) or grand total (GT) indicators are active and clear them if necessary. |
| Keys are unresponsive. | Clean around the keys to remove any debris. If the issue persists, try replacing the battery. |
Specifications
| Feature | Detail |
|---|---|
| Brand | CASIO |
| Model Number | JH-12VT-N |
| Display Type | LCD |
| Number of Digits | 12 |
| Power Source | Battery Powered (Dual Power: Solar & Battery) |
| Color | Purple, White |
| Calculator Type | Standard Calculator |
| Package Dimensions | 25.2 x 14 x 3.5 cm |
| Item Weight | 200 g |
| First Available on Amazon.co.jp | June 13, 2016 |
Warranty and Support
For information regarding warranty coverage, service, or technical support for your CASIO JH-12VT calculator, please refer to the warranty card included with your purchase or visit the official CASIO website. Contact details for customer support are typically available on the product packaging or the manufacturer's website.
