Sunstech CXUM52RD Portable Radio CD Cassette Player User Manual

1. Introduction

Thank you for purchasing the Sunstech CXUM52RD Portable Radio CD Cassette Player. This device combines multiple audio playback options including AM/FM radio, CD player, cassette player, USB, SD card reader, and AUX-IN connectivity. Please read this manual thoroughly before using the unit to ensure proper operation and to maximize its performance.

2. Important Safety Information

Observe the following safety precautions to prevent electric shock, fire, or damage to the unit:

• Do not expose this appliance to rain or moisture.
• Do not block any ventilation openings.
• Ensure the power cord is not pinched or walked on.
• Unplug the unit during lightning storms or when unused for long periods.
• Refer all servicing to qualified service personnel.
• Do not open the casing; there are no user-serviceable parts inside.

3. Product Overview

The Sunstech CXUM52RD features a compact design with integrated controls for various functions. Familiarize yourself with the main components:

Figure 1: Front view of the Sunstech CXUM52RD Portable Radio CD Cassette Player. This image displays the red and black unit with its integrated handle, telescopic antenna, front-loading CD compartment, cassette deck, control buttons, LCD display, and stereo speakers.

Key components include:

• Telescopic Antenna: For FM radio reception.
• CD Compartment: For playing audio CDs.
• Cassette Deck: For playing audio cassettes.
• USB Port: For playing audio files from USB drives.
• SD Card Slot: For playing audio files from SD cards.
• AUX-IN Jack: For connecting external audio devices.
• Headphone Jack: For private listening.
• Function Selector: To switch between modes (CD/USB/SD/Radio/Cassette/AUX).
• Volume Control: Manual rotary knob.
• Tuning Knob: For AM/FM radio frequency selection.

4. Setup

4.1 Power Connection

The unit can be powered by AC mains or batteries.

• AC Power: Connect the AC power cord to the AC socket on the unit and then to a standard wall outlet.
• Battery Power: Open the battery compartment cover on the bottom of the unit. Insert the required number of large batteries (type and quantity not specified in product data, but typically D-size). Ensure correct polarity (+/-). Close the cover securely.

4.2 Antenna Setup

For optimal FM reception, fully extend the telescopic antenna. For AM reception, the unit has a built-in antenna, so adjust the unit's position for best signal.

5. Operating Instructions

5.1 Radio Operation (AM/FM)

1. Set the Function Selector to "RADIO".
2. Select the desired band (AM or FM) using the band switch.
3. Rotate the Tuning Knob to select your desired radio station.
4. Adjust the Volume Control to a comfortable listening level.

5.2 CD Player Operation

1. Set the Function Selector to "CD".
2. Open the CD compartment cover.
3. Place a CD with the label side facing up.
4. Close the CD compartment cover. The unit will read the disc.
5. Press the PLAY/PAUSE button to start playback.
6. Use the SKIP/SEARCH buttons to navigate between tracks.
7. The unit supports repeat and program functions as described in the feature bullets. Refer to the specific buttons on the unit for these functions.

5.3 Cassette Player Operation

1. Set the Function Selector to "TAPE" or "CASSETTE".
2. Open the cassette deck door.
3. Insert a cassette tape with the open edge facing upwards.
4. Close the cassette deck door.
5. Press the PLAY button to start playback.
6. Use the FAST FORWARD and REWIND buttons to navigate the tape.
7. Press the STOP/EJECT button to stop playback and open the deck.

5.4 USB/SD Playback

1. Set the Function Selector to "USB" or "SD".
2. Insert a USB flash drive into the USB port or an SD card into the SD card slot.
3. The unit will automatically detect and begin playing compatible audio files (MP3, WMA).
4. Use the PLAY/PAUSE and SKIP/SEARCH buttons to control playback.

5.5 AUX-IN Connection

1. Set the Function Selector to "AUX".
2. Connect an external audio device (e.g., smartphone, MP3 player) to the AUX-IN jack using a 3.5mm audio cable (not included).
3. Control playback from the connected external device.
4. Adjust the volume using the unit's Volume Control.

5.6 Headphone Use

Connect headphones to the headphone jack for private listening. When headphones are connected, the speakers will be muted.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use abrasive cleaners or solvents.
• CD Lens Care: If CD playback issues occur, use a commercially available CD lens cleaner disc.
• Cassette Head Cleaning: Regularly clean the cassette heads, pinch rollers, and capstan with a cotton swab lightly dampened with isopropyl alcohol to ensure optimal sound quality and prevent tape damage.
• Storage: When not in use for extended periods, remove batteries and store the unit in a cool, dry place.

7. Troubleshooting

8. Specifications

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your purchase or contact Sunstech customer service. Keep your proof of purchase for warranty claims.