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SECTION 4:
TROUBlEShOOTINg
COMMON PROBLEMS AND SOLUTIONS
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.
All PROBlEMS: Most Problems are
related to low battery power.
SOlUTION: Battery Check
• Confirm batteries are charged
each night.
• Confirm proper batteries are
used. The REDMIKE VC 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.
PROBlEM: Hearing Static
SOlUTION: Follow these steps to
eliminate 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 VC/
LT71/ HM70 is operating on the
same channel.
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.
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• If the optional iR media connection
is in use, set the microphone to
Channel A.
PROBlEM: Low Volume or Feedback
SOlUTION: Follow these steps to
eliminate 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.
• Adjust the volume level on the
back of the REDMIKE VC.
PROBlEM: No Sound From Speaker
SOlUTION: Follow these steps to
produce sound from speakers.
• Turn the CAT AV System on.
Confirm that the POWER light
located on the switcher front panel
is on.
• Confirm that REDMIKE VC is
turned on. There will be a BLUE
LED on the microphone to indicate
it is powered on.
TIPS TO OBTAIN OPTIMUM AUDIO
PERFORMANCE
• Speak in a natural voice. A normal
conversational speech level will
provide an adequate signal.
It is not necessary to increase
the intensity of your voice—the
audio system provides adequate
amplification (approximately 5 – 10
dB) above ambient room noises.
• Avoid wearing jewelry that may rub
or bump against the microphone.
• Turn the REDMIKE VC off during
private conversations with a
student, parent, or other classroom
visitor. You can also cover the LED
lens on top of the REDMIKE VC to
block the signal.
• Recharge batteries each night.
When recharged nightly, operating
time (actual usage) for the
transmitters will last through a
typical school day.
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