1. はじめに
This manual provides comprehensive instructions for the TRULY 837A Pro 12-Digit Desktop Calculator. Designed for office, home, and school use, this calculator features a large LCD display, sensitive buttons, and dual power capabilities (solar and battery). Please read this manual carefully to ensure proper use and maintenance of your device.
2.製品オーバーview
The TRULY 837A Pro calculator is built with a durable metal body and offers essential functions for various calculations.
主な特徴:
- Large 12-Digit Anti-Glare Display: Easy-to-read numbers with a wide viewing angle, ensuring clear visibility under various lighting conditions and reducing eye strain.
- Big Buttons for Fast, Accurate Input: Well-spaced, responsive keys minimize errors and enhance calculation speed.
- Premium Metal Face: A brushed metal front panel provides a solid, professional feel and ensures long-term durability.
- Dual Power with Auto Power Off: Operates on solar power with a pre-installed battery backup. Automatically powers off when inactive to conserve energy.
- Essential Business Functions: Includes GT (Grand Total), MU (Mark-Up), double-zero (00), and a backspace key for efficient financial and everyday tasks.
Image: The TRULY 837A Pro calculator, showcasing its design suitable for office use.
製品寸法:
Image: The TRULY 837A Pro calculator with its dimensions: 5.98 inches (15.2 cm) in length, 4.72 inches (12 cm) in width, and 1 inch (2.6 cm) in height, featuring a 20-degree ergonomic view角度。
3. セットアップ
Your TRULY 837A Pro calculator is ready for immediate use upon unboxing. It features a dual power system for reliable operation.
電源:
- 太陽光発電: The calculator primarily operates using its solar panel, which converts ambient light into energy. Ensure the calculator is exposed to sufficient light for optimal performance.
- バッテリーバックアップ： A pre-installed Lithium-Ion battery provides power when light is insufficient or for extended use.
Image: Illustration of the calculator's dual power system, highlighting solar power and battery backup, along with the auto power-off feature.
初回使用:
- 電卓を明るい場所に置いてください。
- を押す オン/交流 button to turn on the calculator and clear any previous entries.
- The display should show '0'. If the display is dim or blank, ensure adequate lighting or consider replacing the battery if issues persist (refer to Maintenance section).
4. 操作手順
Familiarize yourself with the calculator's layout and key functions for efficient operation.
Image: The TRULY 837A Pro calculator highlighting its smart function keys: GT key for reviewing totals, MU key for quick margin calculations, Double-zero (00) key for faster input, and Backspace key for quick corrections.
主な機能:
| 鍵 | 関数 |
|---|---|
| オン/交流 | Turns the calculator ON and clears all entries and memory. |
| CE | 最後のエントリをクリアします。 |
| 0-9、。 | Numeric input keys and decimal point. |
| 00 | Enters two zeros simultaneously for faster input. |
| + , - , × , ÷ | 基本的な算術演算 (加算、減算、乗算、除算)。 |
| = | Calculates the result of an operation. |
| % | パーセンtage計算。 |
| M+ | 表示されている値をメモリに追加します。 |
| M- | 表示されている値をメモリから減算します。 |
| MRCC について | Recalls the memory value (first press) or clears the memory (second press). |
| GT | Grand Total. Displays the sum of all results calculated since the last GT clear. |
| MU | Mark-Up calculation. Used for calculating selling price based on cost and desired profit margin. |
| ◀ | Backspace key. Deletes the last digit entered. |
基本的な計算:
- 最初の数字を入力してください。
- 希望する操作キー（+、-、×、÷）を押します。
- 2番目の数字を入力してください。
- を押す = 結果を表示するにはキーを押します。
Memory Functions Examp上：
To calculate (5 × 2) + (3 × 4):
- プレス オン/交流 クリアする。
- Enter 5, then ×, then 2, then M+. (Display shows 10, 10 is added to memory).
- Enter 3, then ×, then 4, then M+. (Display shows 12, 12 is added to memory).
- プレス MRCC について (once) to recall the total from memory. (Display shows 22).
Mark-Up (MU) Function Examp上：
To calculate the selling price of an item that costs $50 with a 20% profit margin:
- プレス オン/交流 クリアする。
- Enter 50 (cost).
- プレス ÷.
- 20 と入力してください。
- プレス MU. (Display shows 62.5, which is the selling price).
ビデオデモンストレーション:
Video: A demonstration of the TRULY 12-Digit Desktop Calculator's features and basic operation. This video provides a visual guide to using the calculator effectively.
5. メンテナンス
Proper care ensures the longevity and optimal performance of your TRULY 837A Pro calculator.
クリーニング：
- 電卓の表面を柔らかく乾いた布で拭いてください。
- 頑固な汚れには、軽くamp布に水または低刺激性の非研磨性洗剤を含ませて拭いてください。過度の湿気は避けてください。
- Do not use harsh chemicals, solvents, or abrasive cleaning pads, as these can damage the display or casing.
バッテリー交換:
The calculator uses 1 Lithium Ion battery (included). While the solar panel extends battery life, eventual replacement may be necessary if the display becomes consistently dim in adequate light.
- 電卓の背面にある電池ボックスを見つけます。
- コンパートメントカバーを慎重に開けます。
- Remove the old battery and insert a new Lithium Ion battery, ensuring correct polarity (+/-).
- 電池ケースをしっかりと閉めてください。
ストレージ：
- Store the calculator in a cool, dry place away from direct sunlight or extreme temperatures.
- Avoid placing heavy objects on top of the calculator to prevent damage to the display or keys.
6。 トラブルシューティング
電卓で問題が発生した場合は、次の一般的な問題と解決策を参照してください。
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| ディスプレイが空白または暗い。 | 太陽光発電に十分な光がないか、バッテリー残量が少ない。 | Move the calculator to a brighter area. If the problem persists, replace the battery. |
| 計算結果が正しくありません。 | Previous calculation error, memory not cleared, or incorrect key input. | プレス オン/交流 to clear all entries and memory. Re-enter the calculation carefully. |
| キーが反応しません。 | キーの下にほこりやゴミが詰まっている、または内部に故障がある。 | Gently clean around the keys. If the issue persists, contact your retailer for assistance. |
| 電卓が突然オフになります。 | Auto power-off feature activated due to inactivity, or low battery. | This is normal behavior for energy saving. Press オン/交流 to turn it back on. If it turns off frequently during use, replace the battery. |
7. 仕様
Detailed specifications for the TRULY 837A Pro Desktop Calculator:
| 特徴 | 詳細 |
|---|---|
| ブランド | 本当に |
| モデル名 | 837A Pro Blue |
| 電卓の種類 | 標準機能 |
| 表示タイプ | LCD (12 Digits) |
| 電源 | Dual Power (Solar & Battery) |
| 電池のタイプ | リチウムイオン電池1個（付属） |
| エンクロージャ材質 | 金属 |
| 商品の寸法（長さ×幅） | 6"L x 5"W (approx. 15.2 cm x 12.7 cm) |
| 色 | ディープブルー |
| 欧州連合 | 810115926528 |
8. 保証とサポート
No specific warranty information is provided for this product. For any support inquiries, technical assistance, or questions regarding your TRULY 837A Pro Desktop Calculator, please contact the retailer from whom you purchased the device.