Grundig Music Boy 51 - User Manual

PORTABLE RADIO
Music Boy 51
ǵ
RP 5201 PLL

Summary

SAFETY AND INFORMATION

Safety Precautions

Essential instructions for safe and satisfactory use of the device.

Technical Specifications

OVERVIEW

Display Indicators

POWER SUPPLY

Mains Operation

Instructions for connecting and operating the device using mains power.

Battery Operation

Guide for powering the device using standard batteries.

Back-up Battery Installation

SETTINGS

Tuning and Storing Radio Stations

How to find and save radio stations using manual and automatic tuning.

Setting the Clock

Setting the Alarm Time

Guide on how to configure the alarm to sound at a specific time.

OPERATION

Basic Operations

Alarm Functions

Details on setting up and using the alarm with signal or radio.

Managing Alarm Times

Timer Mode Operation

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The Grundig Music Boy 51 (RP 5201 PLL) is a portable radio designed for audio signal playback. It features a compact design with a telescopic antenna for optimal FM (VHF) reception. The device is powered by either a mains power supply (230 V, 50/60 Hz) or four 1.5V C-size batteries (IEC, AM 2, LR 14). It also includes a battery compartment for back-up batteries (micro type, e.g., AM 3, LR 6, AA size) to preserve stored settings during power outages or brief disconnections from the mains.

Function Description:

The Music Boy 51 offers a range of functions for radio listening and alarm features.

• Radio Operation: It supports FM (VHF) frequency band from 87.5 to 108.0 MHz. Users can manually tune stations in 50 kHz steps or perform automatic station searches.
• Preset Stations: The device allows storing up to 10 radio stations on preset buttons (1-5 and 6-10 using the "+5" button). An automatic search function stores the first ten strong signals when the device is first connected or batteries are inserted.
• Volume and Tone Control: Volume can be adjusted using the "+ VOL -" buttons, and the tone can be set with the "TONE" button.
• Clock and Alarm: The radio includes a digital clock and an alarm function. The alarm can be set to either a signal tone or a radio station.
• Sleep Timer: A sleep timer allows the device to switch off automatically in radio mode after a preset time, ranging from 10 to 90 minutes.
• Key Lock: The buttons can be disabled to prevent accidental operation.

Important Technical Specifications:

• Power Supply: 230 V, 50/60 Hz (mains operation); 4x1.5V (C size) batteries (portable operation). Back-up batteries: micro type (AA size).
• Max. Power Consumption: <5W during operation, <1W in stand-by.
• Output: DIN 45324, 10% THD 1W.
• Frequency Band: FM 87.5 ... 108.0 MHz.
• Dimensions (W x H x L): 247 x 127 x 62 mm.
• Weight: Approx. 0.9 kg.
• Earphone Socket: 3.5 mm stereo plug for mono playback.

Usage Features:

• Controls on the Top:
  • ON/OFF: Switches the device on and off.
  • LIFT: Opens the telescopic antenna.
  • PRESETS 1, 2, 3, 4, 5: Preset buttons for storing and selecting radio stations.
  • +5: Activates the second level of preset buttons (6-10).
  • SNOOZE: Interrupts the alarm function.
  • MEM.: Stores radio stations on preset buttons.
• Controls on the Front:
  • - TUNING / + TUNING: Decreases/increases frequency, starts reverse/forwards station search, and sets clock/alarm hours/minutes.
  • SLEEP: Sets the sleep timer.
  • MODE: Activates clock and alarm settings, displays time/alarm time.
  • ALARM: Activates the alarm function, ends alarm stand-by.
• Controls on the Sides:
  • + VOL. -: Adjusts volume.
  • Alarm Tone/Radio Switch: Switches between signal sound and radio program for alarm mode.
  • TONE: Sets the tone.
  • Earphone Socket: For connecting earphones.
• Controls on the Back:
  • AC~: Connection socket for power cable.
  • Handle: For portability.
  • Battery Compartment Cover: For main batteries.
• Controls on the Bottom:
  • Button Disabler/Enabler: Disables and enables the buttons.
• Display: Shows frequency, time, alarm time, sleep timer, preset position, waveband, and battery status. A flashing battery symbol indicates low main batteries (not for auxiliary batteries or when connected to mains). Alarm stand-by is indicated by a signal tone or radio station symbol. The sleep timer and key lock activations are also displayed.

Maintenance Features:

• Cleaning: The device casing should be cleaned with a clean, moist leather cloth. Avoid using any cleaning agents to prevent damage.
• Battery Replacement: Main batteries should be removed when flat or if the device will not be used for a long period. Back-up batteries allow approximately 10 seconds for replacement without losing settings during mains operation.
• Resetting Settings: To reset the device to its original state and delete all settings (time, alarm time, radio settings), interrupt the power supply for at least 2 minutes by removing all batteries (including back-up batteries) and unplugging the power cable.
• Safety: The device should be protected from moisture. Never open the casing, as improper handling voids manufacturer liability. The type plate is located on the bottom of the device.
• Environmental Note: Packaging materials (cardboard and polyethylene) should be disposed of according to local regulations. Batteries, including those without heavy metals, should not be disposed of with household waste but in an environmentally sound manner.

The device is noise-suppressed according to EU directives (89/336/EEC, 73/23/EEC, 93/68/EEC) and conforms to safety regulations VDE 0860 and IEC 65. Technical and design modifications are reserved.

Grundig Music Boy 51 Specifications