Sunstech RPDS32BL Portable Digital AM/FM PLL Radio User Manual

1. Introduction

Thank you for choosing the Sunstech RPDS32BL Portable Digital AM/FM PLL Radio. This manual provides essential information for the safe and efficient operation of your device. Please read it thoroughly before use and retain it for future reference.

2. Important Safety Information

To ensure safe operation and prevent damage, please observe the following precautions:

• Do not expose the unit to rain, moisture, or extreme temperatures.
• Avoid placing the unit near heat sources or in direct sunlight.
• Do not disassemble or modify the device. Refer all servicing to qualified personnel.
• Keep the unit away from strong magnetic fields.
• Use only the specified charging cable and battery type.
• Ensure proper ventilation; do not cover ventilation openings.

3. Package Contents

Please check that all items are present in the package:

• Sunstech RPDS32BL Portable Digital Radio
• Rechargeable Battery (Lithium-ion)
• USB Charging Cable
• Wrist Strap
• User Manual (this document)

4. Product Overview

Familiarize yourself with the components and controls of your Sunstech RPDS32BL radio.

Figure 1: Front view of the Sunstech RPDS32BL portable digital radio, showing the LED display, speaker grille, control buttons, and telescopic antenna. The blue casing highlights the device's compact design.

Figure 2: Two Sunstech RPDS32BL portable digital radios, one blue and one silver, demonstrating the compact size and design from a slightly elevated angle. This image illustrates the product's portability.

Controls and Ports:

• POWER Button: Turns the radio on/off.
• MP3/AM/FM Button: Switches between radio modes (AM/FM) and MP3/USB/SD playback.
• Numeric Keypad (0-9): For direct frequency input or track selection.
• VOL- / VOL+ Buttons: Adjusts volume level.
• Previous / Next Track Buttons: Navigates tracks in MP3 mode or tunes frequency in radio mode.
• MEM / IISCANN Button: Memory function for presets, or auto-scan.
• ADJ Button: Adjustment function, often used with numeric keypad for fine-tuning.
• LED Display: Shows frequency, track number, and other status indicators.
• Telescopic Antenna: For improved radio reception.
• USB Port: For USB flash drives.
• SD/MMC Card Slot: For SD or MMC memory cards.
• AUX Input: For connecting external audio devices.
• Headphone Output: For private listening.

5. Setup

5.1. Battery Installation and Charging

1. Locate the battery compartment on the back of the radio.
2. Open the compartment cover and insert the provided Lithium-ion rechargeable battery, ensuring correct polarity (+/-).
3. Close the battery compartment cover securely.
4. To charge the battery, connect the small end of the USB charging cable to the radio's charging port and the larger end to a USB power adapter (not included) or a computer's USB port.
5. The LED display may indicate charging status. A full charge typically takes a few hours.

5.2. Powering On/Off

Press and hold the POWER button to turn the radio on or off.

6. Operating Instructions

6.1. Radio Operation (AM/FM PLL)

1. Turn on the radio using the POWER button.
2. Press the MP3/AM/FM button repeatedly to select either AM or FM radio mode.
3. Automatic Tuning: Press and hold the MEM / IISCANN button to automatically scan for and store available stations. The radio can store up to 65 preset stations.
4. Manual Tuning: Use the Previous / Next Track buttons to manually tune the frequency step by step.
5. Direct Frequency Input: In radio mode, use the numeric keypad (0-9) to directly enter the desired frequency. Press ADJ to confirm.
6. Extend the telescopic antenna for optimal FM reception. For AM, try rotating the unit for better signal.

6.2. USB/SD/MMC Playback

1. Insert a USB flash drive into the USB port or an SD/MMC card into the card slot.
2. Press the MP3/AM/FM button until the display indicates MP3 mode. The radio will automatically detect and begin playing compatible audio files (MP3, WMA).
3. Use the Previous / Next Track buttons to skip between tracks.
4. Use the numeric keypad (0-9) to directly select a track number.
5. Adjust the volume using the VOL- / VOL+ buttons.

6.3. Auxiliary Input

Connect an external audio device (e.g., smartphone, MP3 player) to the AUX input port using a 3.5mm audio cable (not included). The radio will automatically switch to AUX mode or you may need to select it via the MP3/AM/FM button.

6.4. Headphone Use

Plug 3.5mm headphones into the headphone output jack for private listening. The internal speaker will automatically mute.

7. Maintenance and Care

• Cleaning: Use a soft, dry cloth to clean the exterior of the radio. Do not use abrasive cleaners or solvents.
• Battery Care: If the radio will not be used for an extended period, remove the battery to prevent leakage. Recharge the battery periodically to maintain its lifespan.
• Storage: Store the radio in a cool, dry place away from direct sunlight and extreme temperatures.

8. Troubleshooting

9. Specifications

• Brand: Sunstech
• Model: RPDS32BL
• Color: Blue
• Connectivity: USB
• Special Features: MP3, WMA Playback
• USB Ports: 1
• Compatible Devices: Headphones, MP3 Player, Smartphone, Laptop, Speaker, Tablet
• Battery Type: Lithium-ion (rechargeable)
• Battery Capacity: 400 mAh
• Dimensions (L x W x H): 12 cm x 2.8 cm x 6.8 cm
• Tuning Technology: AM/FM PLL
• Radio Bands Supported: 2 bands (AM/FM)
• Power Source: Battery Powered
• RMS Output: 1.5 W

10. Warranty and Support

Sunstech products are manufactured to high-quality standards. For warranty information specific to your region, please refer to the warranty card included with your purchase or contact your local retailer.

• Spare Parts Availability: 5 Years
• Software Updates: Information not available

For technical support or service inquiries, please visit the official Sunstech website or contact their customer service department. Keep your purchase receipt as proof of purchase.