Listen Technologies LR-500, LR-400, LR-300 manual Troubleshooting, Users keep changing channels

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Troubleshooting

Troubleshooting

Users keep changing channels.

You can prevent users from changing channels by locking in the channel selection. This is done by pressing and holding the SEEK button for 5 seconds. When the channel is locked, the padlock icon will appear on the LR-400 and LR-500 displays. On the LR-300, the LED will flash when the channel is locked and seek is pressed. In addition, you can lock the access doors to the units.

I cannot change channels when pressing the UP and DOWN buttons or the SEEK button. The unit is locked. Press the SEEK button for 5 seconds to unlock.

When I change channels, only certain channels are accessible.

The unit has been programmed to tune to only certain channels (LR-500 only). You can change these channel lock-out selections by re-programming the unit (see page 13).

My batteries are not charging.

Make sure the battery switch is in the NiMH setting and that you are using NiMH (Nickel Metal Hydride) batteries. Make sure you are using only a Listen supplied charging unit or transformer. Never try to charge alkaline or NICAD batteries.

I want to run the unit from a wall transformer.

Simply plug a Listen approved transformer (LA-202) to the CHG/PWR connector on the side of the unit. Batteries do not need to be installed when operating the unit with a wall transformer; however, if you have NiMH batteries installed and the BATTERY select switch is set to NiMH, the batteries will charge while the unit is being used.

It’s confusing for users to have 57 choices when switching between channels.

Use the programming feature (only available in the LR-500) to limit the number of channels accessible by users.

Information

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Contents Page Page Page Page Receivers Table of Contents Page Page Page LR-500 Table of Contents LR-500 Package Contents LR-500 Specifications Architectural SpecificationsBattery Compartment LR-500 Quick ReferenceLR-500 Setup Instructions Remove the productSelect Channels LR-500 Operation Instructions Make Sure the Unit is OnTo Lock into Only One Channel LR-500 Programming Instructions Locking Out Unwanted ChannelsLR-500 Squelch Squelch Programming InstructionsLR-500 Charging Batteries LR-500 Wall Transformer Operation Page Page Page Page LR-400 Table of Contents LR-400 Package Contents LR-400 Specifications Specification LR-400-072 LR-400-216LR-400 Quick Reference LR-400 Setup Instructions See page 29 for squelch and programming information LR-400 Operation Instructions To Lock into Only One Channel LR-400 Squelch LR-400 Charging Batteries LR-400 Wall Transformer Operation Page Page Page LR-300 Table of Contents LR-300 Package Contents LR-300 Specifications Specification LR-300-072LR-300 Quick Reference LR-300 Setup Instructions Red LED will illuminate when on Earphone/Headset jack LR-300 Operation Instructions LR-300 Charging Batteries LR-300 Wall Transformer Operation Channel Selection Listen SQ SQ SummaryRF Reception Maximization Strategies MHz Compatibility Chart Comtek Williams Gentner Telex DrakeCSI AVR Troubleshooting LR-300, LR-400, LR-500 Receivers TroubleshootingTroubleshooting Users keep changing channelsCompliance Notice and FCC Statement Compliance NoticeWarranty & Contacting Listen WarrantyOptional Accessories Earphone OptionsPage
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LR-500, LR-300, LR-400 specifications

Listen Technologies has established itself as a leader in providing innovative audio solutions that enhance communication in various environments. Among their standout products are the LR-400, LR-300, and LR-500, which are designed for assistive listening, language interpretation, and audio distribution. Each of these portable receivers offers unique features, ensuring that users have a seamless experience during presentations, events, and meetings.

The LR-400 is a versatile listening receiver that operates on a wide frequency range. It is specifically engineered for maximum clarity and disturbance-free reception. One of its primary features is the ability to connect directly to a variety of audio sources, making it compatible with numerous sound systems. This device boasts a prominent LCD display, which provides real-time information about channel selection and battery life, enhancing user accessibility. Additionally, the LR-400 supports both mono and stereo audio configurations, catering to different listening preferences and needs.

The LR-300, on the other hand, is specifically built for personal listening purposes, often utilized in classrooms, theaters, and guided tours. It is lightweight and compact, designed for ease of use and portability. One of the LR-300’s standout features is its long battery life, allowing for extended use without the need for frequent recharging. Users can easily adjust the volume for optimal sound levels, ensuring they can fully engage with the presented audio without compromising comfort. The LR-300 can also be equipped with various headphones and earphones, providing flexibility to suit individual preferences.

Finally, the LR-500 expands on the capabilities of its predecessors with advanced technology aimed at improving audiology experiences. It offers a digital communication protocol that significantly enhances audio quality while minimizing interference. The LR-500 is particularly suitable for professional settings, such as conferences and multinational events, where language interpretation is required. With multiple channel options, it allows participants to select their preferred language effortlessly. Its robust design ensures durability, making it suitable for frequent travel and usage in diverse environments.

In conclusion, the LR-400, LR-300, and LR-500 receivers from Listen Technologies exemplify the company's commitment to delivering high-quality audio solutions. Each device is equipped with advanced features and technologies that address specific user needs, whether for personal listening, language interpretation, or professional audio distribution. With their reliability and performance, these receivers enhance communication and accessibility in various settings, ensuring that every voice is heard loud and clear.
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