Sunstech CXUM53 Portable Radio CD/Cassette Player User Manual

1. Introduction

Thank you for purchasing the Sunstech CXUM53 Portable Radio CD/Cassette Player. 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. Safety Information

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

• Do not expose the unit to rain, moisture, or direct sunlight.
• Avoid placing the unit near heat sources such as radiators or stoves.
• Ensure proper ventilation; do not block any ventilation openings.
• Use only the specified power supply (AC 230V ~ 50Hz / 9V DC) or 6 x LR14/C (1.5V) batteries.
• Do not open the casing; refer all servicing to qualified personnel.
• Keep the unit away from strong magnetic fields.
• Remove batteries if the unit will not be used for an extended period.

3. Product Overview

The Sunstech CXUM53 is a versatile portable stereo system featuring a CD player, cassette recorder, FM radio, USB playback, and an AUX-in connection. It is designed for easy portability with a built-in carrying handle and can be powered by AC or batteries.

3.1. Main Unit Components

Refer to the image below for a visual guide to the main components and controls of your Sunstech CXUM53 unit.

Figure 1: Front view of the Sunstech CXUM53 unit, showing the LCD display, control buttons, CD compartment, cassette deck, and speakers.

Figure 2: Detailed front view highlighting the LCD screen and various control buttons for mode selection, playback, and tuning.

3.2. Controls and Indicators

• Power Button: Turns the unit on or off.
• Mode Button: Selects between CD, Radio, Cassette, USB, and AUX modes.
• Volume Control: Adjusts the audio output level.
• Tuning Dial/Buttons: For FM radio frequency selection.
• Play/Pause Button: For CD, USB, and Cassette playback.
• Stop Button: Stops playback.
• Skip/Search Buttons: Skips tracks on CD/USB or searches radio frequencies.
• Record Button: Initiates recording on cassette.
• LCD Display: Shows current mode, track number, frequency, etc.
• Telescopic Antenna: For improved FM radio reception.

4. Setup

4.1. Power Connection

The CXUM53 can be powered by either AC mains or batteries.

4.1.1. AC Power

1. Ensure the unit is switched off.
2. Connect the AC power cord to the AC input jack on the unit.
3. Plug the other end of the AC power cord into a standard wall outlet (AC 230V ~ 50Hz).

4.1.2. Battery Power

1. Ensure the unit is switched off.
2. Open the battery compartment cover located on the bottom or rear of the unit.
3. Insert 6 x LR14/C (1.5V) batteries, observing the correct polarity (+/-) as indicated inside the compartment.
4. Close the battery compartment cover securely.

Note: Batteries are not included. Remove batteries if the unit will not be used for extended periods to prevent leakage.

5. Operating Instructions

5.1. General Operation

1. Press the Power button to turn on the unit.
2. Press the Mode button repeatedly to select your desired function (CD, Radio, Cassette, USB, AUX).
3. Adjust the Volume Control to your preferred listening level.

5.2. Radio Operation (FM)

1. Select Radio mode using the Mode button.
2. Extend the telescopic antenna for optimal reception.
3. Use the Tuning buttons or dial to manually tune to your desired FM station.
4. To auto-scan and preset stations: Press and hold the Scan button (if available) or refer to specific instructions for your model's preset function. The unit supports up to 30 preset stations.

5.3. CD Playback

1. Select CD mode using the Mode button.
2. Open the top-loading CD compartment cover.
3. Place a CD (CD, CD-R, CD-RW, MP3, WMA format) onto the spindle with the label side facing up.
4. Close the CD compartment cover securely.
5. Press the Play/Pause button to start playback.
6. Use the Skip/Search buttons to navigate between tracks.
7. Press the Stop button to end playback.
8. The unit supports 20 programmable CD track memories. Refer to the programming section (if available) for detailed instructions.

5.4. Cassette Playback and Recording

5.4.1. Playback

1. Select Cassette mode using the Mode button.
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 eject the tape.

5.4.2. Recording

1. Insert a blank or recordable cassette tape.
2. Select the desired source for recording (e.g., Radio, CD, AUX-in).
3. Start playback on the source (e.g., play a CD track, tune to a radio station).
4. Press the Record button on the cassette deck. The Play button will also engage.
5. To stop recording, press the Stop button.

5.5. USB Playback

1. Select USB mode using the Mode button.
2. Insert a USB flash drive containing MP3/WMA audio files into the USB port.
3. The unit will automatically detect and begin playing the audio files.
4. Use the Play/Pause and Skip/Search buttons to control playback.

5.6. AUX-in Connection

1. Select AUX mode using the Mode button.
2. Connect an external audio device (e.g., smartphone, MP3 player) to the 3.5mm AUX-in jack on the unit using an audio cable (not included).
3. Start playback on your external device. The audio will be routed through the CXUM53's speakers.
4. Adjust the volume on both the CXUM53 and your external device for optimal sound.

5.7. Headphone Connection

To listen privately, plug standard 3.5mm headphones into the headphone jack. The speakers will automatically mute.

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 Deck Care: Regularly clean the tape heads and pinch rollers with a cotton swab lightly dampened with isopropyl alcohol to ensure optimal sound quality and prevent tape damage.
• Storage: When not in use, store the unit in a cool, dry place away from dust and extreme temperatures.

7. Troubleshooting

8. Specifications

• Model: CXUM53
• Brand: Sunstech
• Color: Red
• Playback Compatibility: CD, CD-R, CD-RW, MP3, WMA
• Radio Tuner: FM (PLL) with up to 30 preset stations
• Output Power: 2W (2 x 1W)
• Connections: 1 x USB port, 1 x 3.5mm AUX-in, 1 x Headphone jack
• Power Source: AC 230V ~ 50Hz / 9V DC or 6 x LR14/C (1.5V) batteries
• Dimensions (L x W x H): Approximately 40 x 30 x 30 cm
• Weight: Approximately 1460 grams
• Manufacturer: Sunstech
• Country of Origin: China

9. Warranty and Support

This product is manufactured by Sunstech. For technical support or warranty inquiries, please refer to the contact information provided with your purchase documentation.

Spare parts availability is guaranteed for 2 years from the date of purchase.