Lectrosonics UT400 - Manual (Page 16)

UT
Troubleshooting
SYMPTOM POSSIBLE CAUSE
UT POWER LED OFF 1) Battery is inserted backwards.
2) Battery is dead, or too low to be used.
UT MODULATION LEDs OFF 1) Audio Level control turned all the way down.
2) Battery is in backwards. Check Power LED.
3) Mic capsule is damaged or malfunctioning.
Contact the factory for repair .
4) Attenuator on VariMic™ preamp board is set for
too much attenuation.
RECEIVER RF INDICATOR OFF 1) UT not turned on.
2) Battery is dead or installed backwards
3) Receiver antenna missing or improperly positioned.
4) UT and receiver not on same frequency. Check labels on UT and
receiver to be sure they are operating on the same frequency block.
5) Make sure the transmitter and associated frequency switch settings
are in agreement.
6) Operating range is too great.
NO SOUND BUT RECEIVER AUDIO LEVEL METER INDICATES SOUND
1) Receiver audio is muted. (Unmute receiver.)
2) Receiver audio output levels set to low.
3) Receiver audio output is disconnected or cable defective
or miswired.
4) Sound system or recorder input is turned down.
DISTORTED SOUND 1) UT Audio Level control set too high. Speak or sing into the UT and
check the UT Audio Level LEDs and corresponding indicators on
the receiver.
2) Receiver output level may be too high for the sound system or
recorder input.
3) If audio level is all the way down, it may be necessary to increase
attenuation in the capsule. Refer to the “Preamp Level Control”
section on page 8.
3) Excessive wind noise or breath “pops.” Microphone may require
an additional wind screen.
4) UT Frequency Switches set incorrectly.
5) RF feedback getting into VariMic
TM mic capsule. Ensure that the
windscreen is present and screwed down snugly.
6) Compatibility Mode mismatch between transmitter and receiver.
HISS AND NOISE -- AUDIBLE DROPOUTS 1) UT Audio Level control set too low.
2) Receiver antenna missing or obstructed.
3) Operating range too great.
4) UT Frequency Switches set incorrectly.
EXCESSIVE FEEDBACK 1) UT Audio Level control set too high. Check level adjustment,
reduce receiver output level, or both.
2) Microphone too close to speaker system.
3) Move microphone closer to the user’s mouth and lower the
sound system volume.
LECTROSONICS, INC. 16