1. Pengenalan
This manual provides essential information for the setup, operation, and maintenance of your RockJam 49 Key USB Keyboard Piano, Model RJ490BB. Designed for beginners and intermediate players, this compact digital piano offers a wide range of features to enhance your musical journey. It includes 200 tones, 200 rhythms, 50 demo tracks, and convenient record and playback functionality. With versatile connectivity options and integrated learning tools, the RockJam RJ490BB is an ideal instrument for exploring music.

Rajah 1: Depan view of the RockJam 49 Key USB Keyboard Piano.
2. Kandungan Pakej
Sila pastikan semua item terdapat dalam pakej:
- RockJam 49 Key USB Keyboard Piano (Model RJ490BB)
- Rehat Muzik
- Kabel Kuasa USB
- Pelekat Nota Piano
- Manual Arahan (dokumen ini)
3. Persediaan
3.1 Menguasakan Papan Kekunci
The keyboard can be powered in two ways:
- Kuasa USB: Connect the provided USB cable to the DC 5V-2A port on the back of the keyboard and to a compatible USB power adapter (not included) or a computer's USB port.
- Kuasa Bateri: Insert 4 x AA batteries (not included) into the battery compartment on the underside of the keyboard. Ensure correct polarity.
3.2 Attaching the Music Rest
Locate the slots on the top panel of the keyboard. Insert the music rest into these slots until it is securely in place. This provides a stable platform for sheet music or a tablet.
3.3 Applying Keynote Stickers
For beginners, the included piano note stickers can be applied to the white keys to help identify notes. Carefully peel each sticker and align it with the corresponding key, ensuring it adheres smoothly. These stickers are designed to be removable.
4. Arahan Operasi
4.1 Hidupkan/Mati Kuasa
Tekan ke KUASA button located on the top left of the control panel to turn the keyboard on or off.
4.2 Kawalan Kelantangan
Putarkan yang besar JILID knob to adjust the master volume of the keyboard.

Figure 2: Power button and Volume knob.
4.3 Memilih Nada
Papan kekunci ini mempunyai 200 nada berbeza. Untuk memilih nada:
- Tekan ke TONA butang.
- Use the number pad (0-9) or the '+' and '-' buttons to enter the desired tone number. The selected tone number will appear on the digital display.
Refer to the tone list printed on the keyboard for available options, including Piano, Organ, Guitar, Bass, Strings, Brass, Synth, and various Sound Effects.

Figure 3: Tone and Rhythm selection lists.
4.4 Memilih Ritma
Papan kekunci ini merangkumi 200 rentak. Untuk memilih rentak:
- Tekan ke RITMA butang.
- Use the number pad (0-9) or the '+' and '-' buttons to enter the desired rhythm number.
- Tekan MULA/BERHENTI untuk memulakan atau menamatkan ritma.
Available rhythms include Pop, Dance, Samba, Tango, Country, and various traditional styles.
4.5 Pelarasan Tempo
While a rhythm or demo song is playing, use the TEMPO '+' and '-' buttons to increase or decrease the playback speed.

Figure 4: Tempo and Sync controls.
4.6 Lagu Demo
The keyboard has 50 pre-recorded demo songs. Press the DEMO button to cycle through and play the demo songs. Press MULA/BERHENTI untuk menghentikan main balik.
4.7 Rakam & Main semula
To record your performance:
- Tekan ke REC button. The display will indicate recording mode.
- Play your desired melody on the keys.
- Tekan BERMAIN untuk mendengar rakaman persembahan anda.
4.8 Effects (Sustain, Vibrato)
Aktifkan KEUSAHAWANAN button to prolong the sound of notes. Press the VIBRATO button to add a wavering effect to the notes.
4.9 Percik
Gunakan yang berdedikasi PERATUSAN buttons to add drum and percussion sounds to your playing.

Figure 5: Control panel with tone, rhythm, and effect buttons.
5. Ketersambungan
The RockJam RJ490BB offers several ports for enhanced functionality:
- Bicu Fon Kepala (3.5mm): Connect headphones for private practice without disturbing others.
- Input Bantu (3.5mm): Connect an external audio device (e.g., smartphone, MP3 player) to play along with your favorite songs.
- Microphone Input (3.5mm): Connect a microphone (not included) to sing along while playing.
- Port USB: Connect the keyboard to a computer for MIDI functionality, allowing use with music software.

Figure 6: Rear panel with USB, Mic, Aux, and Phones jacks.
6. Learning Resources
Your RockJam keyboard includes access to exclusive content designed to aid your learning:
- Aplikasi Simply Piano: Unlock exclusive content from the Simply Piano IOS and Android application. This app provides interactive lessons, helping you learn fundamental piano techniques and play popular songs. Follow the instructions provided with your product to redeem your access.
- Keynote Stickers: As mentioned in the Setup section, these stickers are a visual aid for identifying notes on the keys, making it easier to follow sheet music and learn scales.
7. Penyelenggaraan
Proper care will ensure the longevity of your keyboard:
- Pembersihan: Use a soft, dry cloth to wipe the surface of the keyboard. Avoid using abrasive cleaners, solvents, or waxes, as these can damage the finish.
- Storan: Simpan papan kekunci di tempat yang sejuk dan kering jauh dari cahaya matahari langsung, suhu yang melampau dan kelembapan yang tinggi.
- Penjagaan Bateri: If using batteries, remove them if the keyboard will not be used for an extended period to prevent leakage and damage.
- Pengendalian: Elakkan daripada menjatuhkan papan kekunci atau terkena impak yang kuat.
8. Penyelesaian masalah
Jika anda menghadapi masalah dengan papan kekunci anda, rujuk kepada penyelesaian biasa berikut:
- Tiada Bunyi:
- Semak tahap kelantangan.
- Ensure headphones are not plugged in if you intend to use the built-in speakers.
- Verify the power connection or battery status.
- Keys Unresponsive:
- Pastikan papan kekunci dihidupkan.
- If certain keys on the left side are unresponsive, check if a 'finger' button or similar setting is activated, which might mute sections of the keyboard for specific modes. Deactivate it to restore full keyboard functionality.
- Isu Kuasa:
- If using USB power, try a different USB port or power adapter.
- Jika menggunakan bateri, gantikannya dengan yang baharu.
Untuk bantuan lanjut, sila hubungi khidmat pelanggan RockJam.
9. Spesifikasi
| Ciri | Perincian |
|---|---|
| Model | RJ490BB |
| Bilangan Kunci | 49 |
| Sumber Kuasa | Battery Powered (4x AA), USB (DC 5V-2A) |
| Ketersambungan | USB, 3.5mm Headphone Jack, 3.5mm Aux Input, 3.5mm Microphone Input |
| Nada | 200 |
| Irama | 200 |
| Lagu Demo | 50 |
| Ciri Khas | Built-In Speaker, Compact, Headphone Jack, Lightweight, Recording |
| Dimensi | 7.28 x 30.71 x 2.36 inci |
| Berat Barang | 4.4 paun (2 Kilogram) |
10. Waranti dan Sokongan
For warranty information and customer support, please refer to the documentation included with your purchase or visit the official RockJam website. You may also contact the manufacturer, PDT UK Ltd, for assistance.