1. Pengenalan
Welcome to the user manual for your new Casio EFA-121D-1AVEF Analog-Digital Quartz Watch. This manual provides detailed instructions on how to set up, operate, and maintain your watch to ensure optimal performance and longevity. Please read this manual thoroughly before using your watch.
2. Produk Lebihview
2.1 Komponen dan Paparan
Rajah 2.1: Depan view of the Casio EFA-121D-1AVEF watch, showing the analog hands, digital display, and various indicators.
- Paparan Analog: Traditional hour and minute hands for quick time reference.
- Paparan Digital: Provides detailed information such as time, date, day, and various mode indicators.
- Buttons (A, B, C, D): Used for navigating modes, setting values, and activating functions. (Specific button functions detailed in Section 4.1)
- Stainless Steel Case and Strap: Durable construction for everyday wear.
- Kaca Mineral: Scratch-resistant crystal protecting the watch face.
2.2 Ciri-ciri Utama
- Universal Time Function: Memaparkan waktu semasa di bandar-bandar utama dan kawasan tertentu di seluruh dunia.
- Neo Display: Luminous coating on the hands and/or index markers provides long-term illumination in the dark after only a short exposure to light.
- Tahan Air: Up to 10 bar (100 meters), suitable for swimming and snorkeling.
- Termometer: Built-in sensor for measuring ambient temperature.
- Jam randik: Measures elapsed time with high precision.
- Pemasa undur: Counts down from a preset time.
- penggera: Fungsi penggera harian.
- Automatic Calendar: Displays the correct date automatically, including leap years, up to the year 2099.
3. Persediaan
3.1 Pemeriksaan Awal
Upon unboxing your watch, please inspect it for any visible damage. Ensure all components, including the watch, manual, and warranty information, are present.
Figure 3.1: The Casio EFA-121D-1AVEF watch worn on a wrist, demonstrating its size and fit.
3.2 Melaraskan Tali
The stainless steel strap can be adjusted to fit your wrist size. This typically involves removing or adding links. For precise adjustment and to avoid damaging the strap, it is highly recommended to have this procedure performed by a qualified jeweler or watch technician.
Rajah 3.2: Jarak dekat view of the watch's stainless steel clasp mechanism, which secures the watch on the wrist.
4. Arahan Operasi
4.1 Fungsi Butang
Rajah 4.1: Sisi view of the watch, highlighting the various control buttons on the case.
| Butang | Fungsi |
|---|---|
| A (Upper Left) | Used for adjusting settings (e.g., increasing value, selecting options). |
| B (Upper Right) | Used for adjusting settings (e.g., decreasing value, confirming options). |
| C (Lower Left) | Mode button: Cycles through different watch modes (Timekeeping, Stopwatch, Countdown, Alarm, World Time, Thermometer). |
| D (Lower Right) | Light button: Illuminates the display. Also used for specific function operations. |
4.2 Menetapkan Masa dan Tarikh
- In Timekeeping Mode, press and hold button C until the city code starts flashing on the digital display.
- Gunakan butang A dan B to select your desired city code (time zone).
- Tekan butang C to cycle through the settings: DST (Daylight Saving Time) → 12/24-hour format → Seconds → Hour → Minute → Year → Month → Day.
- Gunakan butang A dan B to adjust each flashing value.
- Once all settings are correct, press button C to exit the setting mode. The analog hands will automatically adjust to match the digital time.
4.3 Mod Navigasi
Tekan butang C repeatedly to cycle through the watch's modes in the following order:
Timekeeping Mode → Stopwatch Mode → Countdown Timer Mode → Alarm Mode → World Time Mode → Thermometer Mode.
4.4 Fungsi Jam randik
Dalam Mod Jam Rangup:
- Tekan butang A untuk memulakan/menghentikan jam randik.
- Tekan butang B untuk menetapkan semula jam randik kepada sifar.
- While the stopwatch is running, press button B to record a lap/split time. Press A untuk berhenti, kemudian B untuk menetapkan semula.
4.5 Fungsi Pemasa Undur
In Countdown Timer Mode:
- Tekan dan tahan butang A to enter setting mode. The hour value will flash.
- Gunakan butang A dan B untuk menetapkan masa undur yang dikehendaki (jam, minit, saat).
- Tekan butang C untuk beralih antara tetapan jam, minit dan saat.
- Tekan butang A untuk memulakan/menghentikan undur.
- Tekan butang B to reset the countdown to its initial value.
4.6 Fungsi Penggera
Dalam Mod Penggera:
- Tekan dan tahan butang A to enter setting mode. The hour value will flash.
- Gunakan butang A dan B to set the desired alarm time (hour, minute).
- Tekan butang C untuk beralih antara tetapan jam dan minit.
- Tekan butang A untuk keluar dari mod tetapan.
- Tekan butang B to toggle the alarm ON/OFF. An indicator will show when the alarm is active.
4.7 Fungsi Waktu Dunia
In World Time Mode:
- Gunakan butang A dan B to scroll through different city codes (time zones). The digital display will show the current time for the selected city.
4.8 Thermometer Function
In Thermometer Mode:
- The watch will display the current ambient temperature.
- Nota: For accurate temperature readings, remove the watch from your wrist for at least 20-30 minutes, as body heat can affect the sensor's reading.
4.9 Pencahayaan
Tekan butang D to illuminate the digital display for easy viewing in low-light conditions. The Neo Display on the analog hands will glow after exposure to light.
5. Penyelenggaraan
5.1 Pembersihan
To maintain the appearance of your watch, wipe the case and strap with a soft, dry cloth regularly. For stubborn dirt, a slightly damp kain boleh digunakan, diikuti dengan kain kering. Elakkan menggunakan pembersih kimia atau bahan kasar.
5.2 Tahan Air
Your watch is water-resistant up to 10 bar (100 meters). This means it is suitable for everyday use, including showering, swimming, and snorkeling. However, it is not suitable for high-impact water sports or diving. Do not operate buttons while the watch is submerged in water.
5.3 Penggantian Bateri
The watch is powered by Lithium Ion batteries. When the display becomes dim or functions become erratic, it may be time for a battery replacement. It is highly recommended to have the battery replaced by an authorized Casio service center or a professional watch repair shop to ensure proper sealing and water resistance integrity.
6. Penyelesaian masalah
| Masalah | Kemungkinan Punca / Penyelesaian |
|---|---|
| Paparan digital kosong atau malap. | Bateri lemah. Gantikan bateri. |
| Jarum analog tidak sepadan dengan masa digital. | Perform the time setting procedure (Section 4.2) to re-synchronize. |
| Butang tidak bertindak balas. | Ensure the watch is not in a locked mode (if applicable) or try resetting the watch (refer to full manual if available). Low battery can also cause this. |
| Bacaan suhu tidak tepat. | Body heat affects the sensor. Remove the watch from your wrist for 20-30 minutes for an accurate ambient temperature reading. |
| Air di dalam jam tangan. | Seal may be compromised. Stop using the watch immediately and take it to an authorized service center. |
7. Spesifikasi
Rajah 7.1: Belakang view of the watch case, showing engraved model and water resistance information.
| Ciri | Perincian |
|---|---|
| Nombor Model | EFA-121D-1AVEF |
| Pergerakan | Kuarza (Analog-Digital) |
| Bahan Kes | Keluli Tahan Karat Pepejal |
| Bahan Tali | Keluli Tahan Karat |
| Kristal | Kaca Mineral |
| Tahan Air | 10 Bar (100 meter) |
| Dimensi (H x W x D) | 4.5 x 1.32 x 4.85 cm (anggaran) |
| Berat badan | 153 g (anggaran) |
| Jenis Bateri | Litium Ion (termasuk) |
| Ciri Khas | Universal Time, Neo Display, Thermometer, Stopwatch, Countdown Timer, Alarm, Automatic Calendar |
8. Waranti dan Sokongan
Your Casio EFA-121D-1AVEF watch comes with a manufacturer's warranty. Please refer to the warranty card included with your product for specific terms, conditions, and duration. For technical support, service, or warranty claims, please contact Casio customer service or visit an authorized Casio service center.
You can find more information and support resources on the official Casio website or through authorized retailers. For the Casio brand store on Amazon, you can visit Kedai Casio di Amazon.