1. Pendahuluan
Thank you for choosing the Cherub WST-500A Chromatic Tuner. This compact and versatile digital tuner is designed for accurate tuning of various musical instruments, including violin and guitar. It features multiple tuning modes to suit your needs. Please read this manual thoroughly to understand the tuner's functions and ensure optimal performance.
2. Informasi Keselamatan
To prevent damage to the device or injury to yourself or others, please observe the following safety precautions:
- Do not expose the tuner to extreme temperatures, direct sunlight, high humidity, or corrosive environments.
- Avoid dropping the tuner or subjecting it to strong impacts.
- Do not attempt to disassemble or modify the tuner. Refer all servicing to qualified personnel.
- Use only the specified battery type (2 x AAA batteries). Ensure correct polarity when installing batteries.
- Remove batteries if the tuner will not be used for an extended period to prevent leakage.
- Jauhkan baterai dari jangkauan anak-anak. Jika tertelan, segera dapatkan bantuan medis.
3. Produk Lebihview
The Cherub WST-500A features a clear LCD display and intuitive controls for easy operation.

Gambar 1: Depan view of the Cherub WST-500A Chromatic Tuner, showing the display, control buttons, speaker, and microphone.
Kontrol dan Fitur:
- Layar LCD: Shows note name, tuning accuracy, and mode indicators.
- Tombol ON/OFF: Powers the tuner on or off.
- AUTO/ITEM Button: Switches between Automatic tuning mode and specific instrument presets (Guitar, Violin).
- FLAT/SOUND Button: In tuning mode, adjusts flat settings. In sound mode, cycles through reference tones.
- Tombol MANUAL: Activates Manual tuning mode.
- UP/DOWN Buttons (Manual): Used to select notes in Manual mode or adjust settings.
- Built-in Microphone (MIC): Detects instrument sound for tuning.
- Pembicara: Emits reference tones in Sound mode.
- Berdiri: Integrated stand on the back for upright positioning.
4. Pengaturan
4.1 Pemasangan Baterai
- Temukan kompartemen baterai di bagian belakang tuner.
- Geser buka penutup kompartemen baterai.
- Insert two (2) AAA batteries, ensuring the correct positive (+) and negative (-) polarity as indicated inside the compartment.
- Tutup penutup ruang baterai dengan rapat.
4.2 Menghidupkan/Mematikan
- To turn the tuner ON, press the AKTIF/NONAKTIF tombol. Layar akan menyala.
- To turn the tuner OFF, press and hold the AKTIF/NONAKTIF tombol selama sekitar 2 detik.
5. Petunjuk Pengoperasian
5.1 Tuning Modes
The WST-500A offers three primary tuning modes:
- Mode Otomatis: The tuner automatically detects the note being played. This is the default mode.
- Modus Manual: Allows you to manually select the target note for tuning.
- Mode Suara: The tuner plays a reference tone for you to tune by ear.
5.2 Chromatic Tuning (Automatic Mode)
- Turn on the tuner. It will typically start in Automatic Chromatic mode.
- Play a single note on your instrument. Hold the note steadily.
- The tuner's display will show the detected note name.
- Adjust your instrument until the needle on the display is centered and the indicator light turns green.
- If the needle is to the left, the note is flat; tighten the string. If the needle is to the right, the note is sharp; loosen the string.
5.3 Instrument Presets (Guitar/Violin)
The tuner includes specific presets for Guitar and Violin, which can simplify tuning for these instruments.
- Nyalakan tuner.
- Tekan tombol AUTO/ITEM button repeatedly to cycle through the available instrument modes (Chromatic, Guitar, Violin). The selected instrument will be indicated on the display.
- In Guitar or Violin mode, play the desired string. The tuner will display the target note for that string and guide you to tune it.
- Tune your instrument until the display indicates the correct pitch (centered needle, green light).
5.4 Modus Manual
Use Manual mode when you need to tune to a specific note or if the automatic detection is challenging.
- Nyalakan tuner.
- Tekan tombol PANDUAN button to enter Manual mode.
- Gunakan UP Dan TURUN buttons to select your desired target note.
- Play the corresponding note on your instrument and adjust until the display indicates accurate tuning.
5.5 Mode Suara
Sound mode provides an audible reference tone for tuning by ear.
- Nyalakan tuner.
- Tekan tombol FLAT/SOUND button to enter Sound mode.
- Tekan tombol FLAT/SOUND button again to cycle through the available reference tones (e.g., A4, B4, C5).
- Listen to the reference tone and tune your instrument's corresponding string to match the pitch.

Figure 2: The Cherub WST-500A Tuner shown in a hand, illustrating its compact and portable design (approximately 3.9 inches / 9 cm in height).
6. Pemeliharaan
Proper care will extend the life of your Cherub WST-500A tuner.
- Clean the tuner with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- If the tuner will not be used for an extended period, remove the batteries to prevent potential leakage and damage.
- Simpan tuner di tempat yang sejuk dan kering, jauhkan dari sinar matahari langsung dan suhu ekstrem.
7. Penyelesaian masalah
If you encounter issues with your tuner, refer to the following table:
| Masalah | Kemungkinan Penyebab | Larutan |
|---|---|---|
| Tuner tidak menyala. | Baterai mati atau tidak terpasang dengan benar. | Ganti baterai dengan baterai AAA baru, pastikan polaritasnya benar. |
| Inaccurate tuning readings. | Background noise, instrument not producing a clear tone, or incorrect mode. | Ensure a quiet environment. Play notes clearly and steadily. Verify the correct tuning mode (Chromatic, Guitar, Violin) is selected. Try Manual mode. |
| Tampilan redup atau berkedip-kedip. | Daya baterai rendah. | Ganti baterai. |
| No sound from speaker in Sound Mode. | Not in Sound Mode, or very low battery. | Press FLAT/SOUND button to enter Sound Mode. Replace batteries if necessary. |
8. Spesifikasi
- Rentang Penyetelan: Db (69.296Hz) - d3 (1174.66Hz)
- Mode Penyetelan: Chromatic, Guitar, Violin
- Metode Deteksi: Mikropon
- Kekuatan: 2 baterai AAA
- Ukuran: Sekitar 5.8 x 2.7 x 0.9 inci (14.7 x 6.9 x 2.3 cm)
- Berat: Sekitar 3.2 ons (90 gram) (tanpa baterai)
9. Garansi dan Dukungan
Cherub products are manufactured to high-quality standards. For specific warranty information, please refer to the warranty card included with your purchase or contact your local Cherub distributor or retailer. For technical support or further inquiries, please visit the official Cherub websitus atau hubungi departemen layanan pelanggan mereka.
Harap simpan bukti pembelian Anda untuk klaim garansi apa pun.