Troubleshooting Guide

8 5 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 troubleshooting,
use known good, fully-charged batteries.
Battery Check		No Sound From Speaker
•	Conﬁrm batteries are charged	•	Turn the 850iR on. Conﬁrm that
	each night.		the POWER light located on the
•	Make sure the LT-71 is turned off		front panel switch is on.
•	Make sure the LT-71 is turned off
	while charging so that it will attain	•	Conﬁrm signal is being received
	a full charge. Full charge will last		at the ampliﬁer. The IR signal
	eight hours.		light will be lit (red) indicating a
•	Make sure the charge cord is		signal is being received.
•	Make sure the charge cord is
	connected to the cradle charger.	•	Conﬁrm microphone is function-
•	Inspect the battery contacts. Clean		ing. Next to the IR signal light is
•	Inspect the battery contacts. Clean		the AF signal light. This light will
	and adjust if necessary.		the AF signal light. This light will
	and adjust if necessary.		ﬂicker (green) as audio is picked
Hearing Static			ﬂicker (green) as audio is picked
Hearing Static			up by the microphone indicating
•	Ensure sensor is in optimum		activity.
•	Ensure sensor is in optimum
	location (refer to sensor placement	•	Ensure speaker switch on the
	in manual). A single sensor will		ampliﬁer is in the “ON” position
	cover a 1600 sq. ft. enclosed		for each speaker that is connect-
	classroom.		ed to the ampliﬁer. Check con-
•	Ensure that no other LT71/HM70 is		nections on both the ampliﬁer
•	Ensure that no other LT71/HM70 is		and speaker.
	operating on the same channel.		and speaker.
	operating on the same channel.
•	If an external microphone is in use,	•	Conﬁrm that the speaker wires
•	If an external microphone is in use,		are connected correctly to the
	try another LightMic that is known		are connected correctly to the
	try another LightMic that is known		back of the 850iR (refer to
	to be working (if available) to isolate		back of the 850iR (refer to
	to be working (if available) to isolate		speaker install guide) and make
	the problem. If static persists with		speaker install guide) and make
	the problem. If static persists with		sure that the speaker switch for
	“known good” microphone, the		sure that the speaker switch for
	“known good” microphone, the		that output jack is in the ON
	LT-71 input jack has damage and		that output jack is in the ON
	LT-71 input jack has damage and		position.
	will need service.		position.
	will need service.
Low Volume or Feedback

•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.

19 850iR User Manual

850iR specifications

LightSpeed Technologies has introduced the 850iR, an innovative solution designed to enhance audio quality and communication in various environments such as classrooms, auditoriums, and corporate settings. This advanced audio system is known for its robust features and cutting-edge technologies, which cater to the increasing demand for effective communication and collaboration.

One of the standout features of the 850iR is its powerful amplification capabilities. With a high-efficiency digital amplifier, the system delivers clear and dynamic sound across a wide range of frequencies. This ensures that every word spoken is heard distinctly, minimizing the chances of miscommunication and enhancing the listening experience for all participants. The system is particularly beneficial in larger spaces where sound dispersion can be an issue.

The 850iR incorporates long-range infrared technology, allowing for reliable audio transmission without interference from other devices. This infrared system provides clarity and privacy, making it perfect for sensitive discussions or instructional settings. Users can experience high-quality sound without the distractions commonly associated with wireless audio technologies.

Another advanced feature of the 850iR is its user-friendly interface. The device is designed for easy operation, enabling users to control volume levels, switch between input sources, and adjust settings seamlessly. This intuitive design is crucial for educators and presenters who need to focus on delivering content rather than troubleshooting equipment.

Additionally, the 850iR supports multiple input options, including microphones, computers, and other audio sources. This versatility allows for diverse applications, whether it's delivering a lecture, conducting a meeting, or hosting a conference. The inclusion of dynamic feedback suppression further enhances audio quality by reducing unwanted echoes and background noise.

LightSpeed Technologies also emphasizes the importance of durability and reliability in the design of the 850iR. Constructed with high-quality materials, the system is built to withstand the rigors of daily use in busy environments. Its compact design allows for easy installation and portability, making it a practical choice for organizations that require flexibility.

In summary, the LightSpeed Technologies 850iR stands out as a sophisticated audio solution that combines advanced technologies, strong performance, and ease of use. By addressing the essential needs of modern communication, the 850iR significantly contributes to engaging and effective interactions in various settings. Its focus on quality audio and user experience ensures it remains a valuable tool for educators, presenters, and professionals alike.

Battery Check

No Sound From Speaker

Hearing Static

Low Volume or Feedback

850iR specifications