8 2 0 i R U s e r M a n u a l

TROUBLESHOOTING GUIDE

Note: Most problems are directly related to low battery power. Please run through the “Battery Check” items first. For remaining trouble- shooting, use known good, fully-charged batteries.

Battery Check

No Sound From Speaker

•Confirm batteries are charged each night.

•Make sure the LT-71 is turned off while charging so that it will attain a full charge. Full charge will last eight hours.

•Make sure the charge cord is connected to the cradle charger.

•Inspect the battery contacts. Clean and adjust if necessary.

Hearing Static

•Ensure sensor is in optimum location (refer to sensor placement in manual). A single sensor will cover a 1600 sq. ft. enclosed classroom.

•Ensure that no other LT-71/HM70 is operating on the same channel.

•If an external microphone is in use, try another LightMic that is known to be working (if available) to isolate the problem. If static persists with “known good” microphone, the LT-71 input jack has damage and will need service.

Low Volume or Feedback

•Turn the 820iR on. Confirm that the POWER light located on the front panel switch is on.

•Confirm signal is being received at the amplifier. The IR signal light will be lit (red) indicating a signal is being received.

•Confirm microphone is function- ing. Next to the IR signal light is the AF signal light. This light will flicker (green) as audio is picked up by the microphone indicating activity.

•Confirm that the speaker wires are connected correctly to the back of the 820iR (refer to speaker install guide).

•Ensure microphone is positioned appropriately, just below the collar- bone. If a headset microphone is in use, the end of the mic boom should be positioned at the corner of the mouth.

•Check volume level on the ampli- fier. If the volume is too high, feed- back WILL occur. Adjust accordingly.

If you review these instructions and still have questions, write down the serial number and model number of your system and call LightSPEED Technical Services at 800.732.8999, 6:30 a.m. – 5 p.m. PST.

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LightSpeed Technologies 820iR user manual Troubleshooting Guide, Battery Check No Sound From Speaker
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820iR specifications

LightSpeed Technologies has been at the forefront of educational audio solutions, delivering innovative products that enhance communication and learning in classrooms. One of their standout products is the LightSpeed Technologies 820iR, a cutting-edge infrared sound system designed to bolster audio clarity and engagement in educational settings.

The 820iR is engineered with an array of features that prioritize both teacher convenience and student comprehension. At its core, the system utilizes infrared technology to transmit high-quality audio directly from the teacher’s microphone to the students. This ensures that every word is heard clearly, regardless of classroom size or acoustic challenges. The use of infrared boosts sound quality while minimizing interference, making it a reliable choice for diverse learning environments.

A notable feature of the 820iR is its wireless microphone system. Teachers can enjoy hands-free operation with the lightweight, comfortable headset microphone, allowing them to move freely around the classroom without compromising audio quality. This mobility fosters a more interactive teaching style and keeps students engaged.

The 820iR system also supports multiple channels, which means that multiple instructors can use their microphones simultaneously without interference. This feature is particularly beneficial in collaborative teaching scenarios or during team-teaching arrangements, as it ensures that each teacher's voice is transmitted clearly.

In terms of installation, the 820iR is user-friendly and designed for easy setup, making it accessible for schools and institutions looking to upgrade their audio infrastructure. The system includes wall-mounted speakers that are discreet yet powerful, providing an even distribution of sound throughout the classroom.

Another crucial aspect of the LightSpeed Technologies 820iR is its compatibility with assistive listening devices. This inclusivity feature allows students with hearing impairments to benefit from the same high-quality audio experience as their peers, adhering to educational standards for accessibility.

Overall, the LightSpeed Technologies 820iR stands out for its commitment to improving classroom communication. With its robust features, wireless capabilities, and user-centric design, it represents a significant advancement in educational audio systems, ultimately fostering an enriched learning environment where every student can thrive.
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