Casio FX-991MS 2nd Gen Scientific Calculator User Manual

1. Pengenalan

The Casio FX-991MS 2nd Gen is a non-programmable scientific calculator designed for a wide range of mathematical and scientific applications. It features 401 functions and a clear 2-line display, making it suitable for students and professionals. This manual provides essential information for setup, operation, maintenance, and troubleshooting.

Figure 1: Casio FX-991MS 2nd Gen Scientific Calculator.

1.1 Ciri-ciri Utama

• 401 Fungsi Terbina dalam
• 2-Line Display for enhanced readability
• Solar and Battery Dual Power Source
• Multi-Replay Function for formula recall and editing
• Durable, drop-resistant body with water-resistant printing on keys
• Color-coded keys for intuitive operation

1.2 Apa yang ada di dalam Kotak

• 1 x Casio FX-991MS 2nd Gen Scientific Calculator
• 1 x Manual Pengguna (dokumen ini)
• 1 x Warranty Card with Serial Number
• 1 x Warranty Term Sheet

2. Persediaan

The Casio FX-991MS 2nd Gen calculator is designed for immediate use upon unboxing. It operates on both solar power and a nonstandard battery, ensuring continuous functionality.

2.1 Sumber Kuasa

The calculator utilizes a dual power system: solar power for sufficient light conditions and a built-in nonstandard battery for low-light environments or when solar power is insufficient. No initial battery installation is required as the battery is pre-installed.

2.2 Menghidupkan/Mematikan

• Untuk menghidupkan: Tekan butang ON butang.
• Untuk mematikan: Tekan SHIFT kemudian AC (MATI).

3. Arahan Operasi

The Casio FX-991MS 2nd Gen offers a wide array of functions accessible through its intuitive key layout and 2-line display. The upper line displays the input expression, and the lower line shows the calculation result.

Figure 2: Calculator with its protective hard case.

3.1 Pengiraan Asas

Enter numbers and operators in sequence. Press = to obtain the result.

• Penambahan/Penolakan: guna + dan - kunci.
• Pendaraban/Pembahagian: guna × dan ÷ kunci.
• Tanda kurung: guna ( dan ) for grouping expressions.

3.2 Fungsi Saintifik

Access scientific functions using the dedicated keys or by pressing SHIFT followed by the desired function key.

• Fungsi trigonometri: dosa, cos, sawo matang dan fungsi songsangnya (SHIFT + dosa, dsb.).
• Fungsi Logaritma: log (asas 10) dan ln (logaritma asli).
• Fungsi Kuasa dan Akar: x², x³, √, ³√, xʸ.

Figure 3: Illustration of trigonometric function keys.

3.3 Statistical Calculations

The calculator supports various statistical calculations. To enter STAT mode, press MODE and select the appropriate statistical mode (e.g., SD for standard deviation, REG for regression).

• Kemasukan Data: Input data points using the M+ kunci.
• Statistical Results: Calculate mean, standard deviation, sum of squares, etc., after data entry.

Figure 4: Illustration of statistical function keys.

3.4 Multi-Replay Function

The Multi-Replay function allows you to recall and edit previously executed formulas. Use the ▲ dan ▼ cursor keys to navigate through past calculations. This feature is useful for correcting errors or performing similar calculations with different values.

Figure 5: The Multi-Replay function allows quick recall and editing of previous calculations.

3.5 Constants and Conversions

The calculator includes built-in scientific constants and unit conversion functions. Refer to the detailed function guide for specific constant codes and conversion procedures.

4. Penyelenggaraan

Proper maintenance ensures the longevity and optimal performance of your calculator.

4.1 Pembersihan

Wipe the calculator's exterior with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the casing and water-resistant key printing.

4.2 Penyimpanan

Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. Use the provided protective cover to prevent scratches and damage to the keys and display.

Figure 6: Dimensions of the Casio FX-991MS 2nd Gen Calculator (16.2L x 7.7W Centimeters).

5. Penyelesaian masalah

If you encounter issues with your calculator, refer to the following common problems and solutions.

5.1 Isu Paparan

• Paparan Kosong: Ensure sufficient light for solar power or that the battery is functional. If the display remains blank, try pressing the ON butang.
• Paparan Samar: The battery may be low. While the calculator uses solar power, a weak battery can affect display clarity in certain conditions.

5.2 Incorrect Results

• Mod Semak: Verify that the calculator is in the correct mode (e.g., COMP for general calculations, STAT for statistics). Press MODE untuk berubah.
• Angle Unit: Ensure the correct angle unit (DEG, RAD, GRA) is selected for trigonometric calculations. Press MODE multiple times to cycle through options.
• Tetapkan semula: If issues persist, perform a full reset. Press SHIFT kemudian CLR (MODE) and select Semua. This will clear all memory and settings.

6. Spesifikasi

7. Waranti dan Sokongan

Your Casio FX-991MS 2nd Gen Scientific Calculator comes with a manufacturer's warranty and dedicated support.

7.1 Waranti Pengeluar

Produk dilindungi oleh a 3-year All India Manufacturer Warranty from the date of purchase. An additional 6 months warranty can be availed by registering your product online.

• To avail warranty: Produce the original bill copy/invoice at an authorized Casio service center. The warranty card and stamp are not mandatory for online purchases.
• Pendaftaran dalam talian: Daftar produk anda di https://register.casio.in for an extended warranty.

7.2 Sokongan Pelanggan

For any service-related inquiries or feedback, please contact Casio India:

• Nombor Talian Bantuan: 011-66999200
• e-mel: casiocare@casio.co.in
• Maklumat Hubungan Pengilang: Casio India Co Pvt Ltd, A-41, Tingkat 1, MCIE, Mathura Road, New Delhi-110044