PRUNUS J-985
PRUNUS J-985 Mini AM/FM Stereo Pocket Radio Instruction Manual
Model: J-985
1. Introduction
This manual provides detailed instructions for the operation and maintenance of your PRUNUS J-985 Mini AM/FM Stereo Pocket Radio. Please read this manual thoroughly before using the device to ensure proper function and longevity.
Image 1.1: The PRUNUS J-985 Mini AM/FM Stereo Pocket Radio, showcasing its compact design and included headphones.
2. Product Overview
The PRUNUS J-985 is a compact, battery-operated AM/FM stereo radio designed for portability. It features a high-quality DSP chip for stable signal reception and uses the headphone wire as an antenna. The radio includes a back clip for convenient carrying.
2.1 Components and Controls
Image 2.1: Labeled diagram of the PRUNUS J-985 radio's controls.
- ON/OFF Switch: Powers the radio on or off.
- 3.5mm Earphone Jack: Connects headphones. The headphone wire also functions as the FM antenna.
- Power Indicator: An LED light that indicates the radio is powered on.
- Tuning Wheel: Used to select radio stations.
- Volume Wheel: Adjusts the audio output level.
- AM FM FM-ST Switch: Selects between AM, FM, and FM Stereo modes.
- Back Clip: For attaching the radio to clothing or a belt.
Image 2.2: The compact size of the PRUNUS J-985 radio.
3. Setup
3.1 Battery Installation
The PRUNUS J-985 radio requires two (2) AAA batteries for operation. To install the batteries:
- Locate the battery compartment cover on the back of the radio.
- Slide the cover open.
- Insert two AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment cover securely.
Note: Low battery power can affect radio signal reception. Replace batteries when audio quality degrades or hiss increases.
Image 3.1: The radio is powered by two AAA batteries, offering extended usage.
3.2 Connecting Headphones
Connect the included headphones (or any standard 3.5mm headphones) to the earphone jack at the top of the radio. The headphone wire serves as the antenna for FM reception, so ensure it is extended for optimal signal quality.
Image 3.2: The headphone wire functions as the antenna for the radio.
4. Operation
4.1 Powering On/Off
Slide the ON/OFF Switch to the 'ON' position to power on the radio. The power indicator light will illuminate. Slide the switch to 'OFF' to power off the radio.
4.2 Selecting a Band (AM/FM/FM-ST)
Use the AM FM FM-ST Switch to select your desired radio band:
- AM: For Amplitude Modulation broadcasts (Frequency range: 530-1710 KHz).
- FM: For Frequency Modulation broadcasts (Frequency range: 87-108 MHz).
- FM-ST: For FM Stereo broadcasts, providing rich stereo sound through headphones.
4.3 Tuning to a Station
Rotate the Tuning Wheel up or down to scan for radio stations. The large numbers tuner dial provides a visual guide for frequency selection. Adjust the tuning wheel slowly for precise station locking.
4.4 Adjusting Volume
Rotate the Volume Wheel up or down to increase or decrease the audio output level through your headphones.
Image 4.1: Enjoying FM stereo sound with headphones.
5. Maintenance
5.1 Cleaning
To clean the radio, use a soft, dry cloth. Do not use liquid cleaners, abrasive pads, or chemical solvents, as these may damage the surface of the device.
5.2 Storage
When not in use for extended periods, remove the AAA batteries to prevent leakage and corrosion. Store the radio in a cool, dry place away from direct sunlight and extreme temperatures.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Batteries are dead or incorrectly inserted. | Replace batteries with new AAA batteries, ensuring correct polarity. |
| Poor reception / Lots of hiss | Low battery power; headphone wire not extended; weak signal area. | Replace batteries. Ensure headphone wire is fully extended. Try moving to an area with better signal reception. |
| No sound | Volume too low; headphones not connected properly; faulty headphones. | Increase volume. Re-insert headphones firmly. Test with another pair of headphones. |
| Cannot tune to a specific station | Tuning wheel not precisely adjusted; station out of range. | Adjust the tuning wheel slowly and precisely. Try tuning in a different location. |
7. Specifications
- Brand: PRUNUS
- Model: J-985
- Tuner Technology: AM, FM
- Radio Bands Supported: AM/FM
- Frequency Range: AM: 530-1710 KHz; FM: 87-108 MHz
- Power Source: Battery Powered (2 x AAA batteries)
- Product Dimensions: 3.78 x 0.98 x 4.72 inches (9.6 x 2.5 x 12 cm)
- Item Weight: 1.41 ounces (40g, without batteries)
- Special Feature: Portable, Back Clip
- Included Components: Owner's Manual, Headphones
8. Warranty and Support
For any questions, technical support, or warranty information not covered in this manual, please refer to the official PRUNUS website or contact their customer service. Keep your purchase receipt for warranty claims.
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