LightSpeed Technologies 850iR Benutzerhandbuch

8 5 0 i R U s e r M a n u a l

31 | 850iR User Manual

TROUBLESHOOTING GUIDE

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, 5 a.m. – 5 p.m., PST.

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

• Confirm

batteries are charged

each night.

• Confirm

proper batteries are used.

The REDMIKE requires the Lightspeed
BA-NH2A27 rechargeable sensing
battery for proper charging. The LT-71
& HM-70 require NiMH AA rechargeable
batteries.

• Make

sure the microphones are turned

off while charging so a full charge is
attained. Full charge will last eight
hours.

• 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 REDMIKE/LT71/

HM70 is operating on the same channel.

Low Volume or Feedback

•

Ensure

microphone is positioned

appropriately, just below the collar
bone.

• Check

volume level on the amplifier. If

the volume is too high, feedback will
occur. Adjust accordingly.

No Sound From Speaker

• Turn

the 850iR on. Confirm that the

POWER light located on the front panel
switch is on.

• Confirm

signal is being received at the

850iR. The IR signal light will be RED
indicating a signal is being received.

• Confirm

that REDMIKE is turned on.

There will be a BLUE LED on
the microphone to indicate it is
powered on.