1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your Memorex MCB428B Aluminum Wireless Alarm Clock Radio. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your user experience. This device combines an alarm clock, FM radio, Bluetooth speaker, and Micro SD card player in a compact, stylish design.
2. Package Contents
Verify that all items listed below are included in your package:
- Memorex MCB428B Aluminum Wireless Alarm Clock Radio
- 3.5 mm Audio Cable
- Micro-USB to USB Cable
- Rod Antenna
- Owner's Manual (this document)
3. Product Overview
Familiarize yourself with the various components and controls of your Memorex MCB428B.
Figure 3.1: Front View. The main display shows time and battery percentage. The Memorex logo is on the left side.
Figure 3.2: Angled View. This perspective highlights the digital display showing time, temperature, and battery status.
Figure 3.3: Top Controls. This image displays the control buttons located on the top surface, including SNOOZE, DIMMER, play/pause, skip tracks, and mode selection.
Figure 3.4: Side Ports. The side of the unit features the Micro SD card slot, 3.5mm Aux-in port, and Micro-USB charging port.
Figure 3.5: Example Placement. The alarm clock radio is shown on a bedside table, illustrating its compact size and suitability for bedroom use.
4. Setup
4.1. Powering On and Charging
- Connect the supplied Micro-USB to USB cable to the Micro-USB port on the side of the unit.
- Connect the other end of the USB cable to a powered USB port (e.g., a computer, USB wall adapter).
- The unit will begin charging. The display may show a charging indicator. A full charge provides approximately 7 hours of operation at 100% volume.
- Press and hold the Power button (usually combined with the Mode button) on the top of the unit to turn it on.
4.2. Initial Time Setting
Upon first use or after a prolonged power loss, you may need to set the time.
- In clock mode, press and hold the 'Time Set' button (refer to Figure 3.3 for button layout). The hour digits will begin to flash.
- Use the 'Previous' and 'Next' buttons (often combined with volume controls) to adjust the hour.
- Press the 'Time Set' button again to confirm the hour and move to minute adjustment. The minute digits will flash.
- Use the 'Previous' and 'Next' buttons to adjust the minutes.
- Press the 'Time Set' button one more time to save the time and exit time setting mode.
5. Operating Instructions
5.1. Mode Selection
Press the 'Mode' button (often combined with the Power button) repeatedly to cycle through available modes: Bluetooth, FM Radio, Micro SD, and Aux-in.
5.2. Bluetooth Pairing
- Switch the unit to Bluetooth mode. The display will show 'BT' and an icon, indicating it is ready for pairing.
- On your mobile device, enable Bluetooth and search for available devices.
- Select 'Memorex MCB428B' from the list of devices.
- Once paired, the unit will emit an audible confirmation, and the Bluetooth icon on the display will become solid.
- You can now play audio from your device through the Memorex MCB428B. The wireless range is approximately 60 feet.
5.3. FM Radio Operation
- Connect the supplied rod antenna to the antenna port on the unit for improved reception.
- Switch the unit to FM Radio mode. The display will show the current frequency.
- Auto Scan: Press and hold the 'Play/Pause' button to automatically scan and save available FM stations.
- Manual Tuning: Briefly press the 'Previous' or 'Next' buttons to fine-tune the frequency.
- Navigate Presets: After auto-scanning, briefly press the 'Previous' or 'Next' buttons to cycle through saved stations.
5.4. Micro SD Card Playback
- Insert a Micro SD card (with MP3 audio files) into the Micro SD card slot on the side of the unit.
- Switch the unit to Micro SD mode. Playback should begin automatically.
- Use the 'Play/Pause' button to pause or resume playback.
- Use the 'Previous' and 'Next' buttons to skip tracks.
5.5. Setting Alarms
The unit supports dual alarms.
- Press the 'Alarm 1' or 'Alarm 2' button (refer to Figure 3.3). The alarm time will flash.
- Use the 'Previous' and 'Next' buttons to set the desired hour. Press the alarm button again to confirm.
- Use the 'Previous' and 'Next' buttons to set the desired minutes. Press the alarm button again to confirm.
- Select the wake source: Micro SD, FM Radio, or a standard alarm tone. Use the 'Previous' and 'Next' buttons to cycle through options and press the alarm button to confirm.
- To activate or deactivate an alarm, briefly press the corresponding 'Alarm 1' or 'Alarm 2' button. An alarm icon will appear/disappear on the display.
5.6. Dimmer Control
The multi-step dimmer allows you to adjust the brightness of the LCD display.
- Press the 'Dimmer' button (refer to Figure 3.3) repeatedly to cycle through different brightness levels.
- Select the level that is most comfortable for your environment.
5.7. Aux-in Connection
Use the 3.5 mm audio cable to connect external audio devices.
- Connect one end of the 3.5 mm audio cable to the Aux-in port on the side of the Memorex MCB428B.
- Connect the other end to the headphone jack or audio output of your external device.
- Switch the unit to Aux-in mode.
- Control playback and volume from your external device.
6. Maintenance
6.1. Cleaning
To clean the unit, gently wipe the surfaces with a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents as they may damage the finish. Avoid spraying liquids directly onto the unit.
6.2. Battery Care
The unit contains a built-in rechargeable lithium-ion battery. To prolong battery life:
- Charge the unit fully before first use.
- Avoid completely draining the battery frequently.
- If storing the unit for an extended period, charge it to approximately 50% every few months.
7. Troubleshooting
If you encounter issues with your Memorex MCB428B, refer to the following table for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | Battery is depleted. | Connect the unit to a power source using the Micro-USB cable and allow it to charge. |
| No sound from speakers. | Volume is too low or muted. Incorrect mode selected. | Increase the volume. Ensure the correct input mode (Bluetooth, FM, Micro SD, Aux) is selected. |
| Bluetooth device cannot pair. | Unit is not in pairing mode. Device is out of range. | Ensure the unit is in Bluetooth mode and visible. Move the device closer to the unit. |
| Poor FM radio reception. | Antenna not connected or positioned incorrectly. | Connect the rod antenna and adjust its position for better signal. |
| Display shows "POWER OFF" randomly. | Internal software issue or low power. | Ensure the unit is fully charged. Try a factory reset if available (refer to manufacturer support if issue persists). |
| Alarm does not sound. | Alarm not activated or set incorrectly. | Verify the alarm is set and activated (icon visible on display). Check alarm volume. |
8. Specifications
Detailed technical specifications for the Memorex MCB428B:
| Feature | Detail |
|---|---|
| Brand | Memorex |
| Model Number | MCB428B |
| Colour | Black |
| Material | Aluminium |
| Display Type | Digital LCD |
| Connectivity Technology | Bluetooth |
| Special Features | Alarm, FM Radio, Bluetooth, Micro SD Playback, Multi-Step Dimmer |
| Product Dimensions | 17.5W x 5.1H Centimeters |
| Power Source | Battery Powered (Built-in rechargeable Lithium Ion) |
| Battery Life | Approx. 7 hours at 100% volume |
| Wireless Range | 60 feet (Bluetooth) |
| Supported Media | Micro SD card (MP3 playback) |
| Manufacturer | DPI, Inc. |
| UPC | 047323542800 |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or visit the official Memorex website. Keep your proof of purchase for warranty claims.
