Lectrosonics R172 User Manual
Page 11
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TROUBLESHOOTING
Before going through the following chart, be sure that you have a good battery in the transmitter. It is
important that you follow these steps in the sequence listed.
SYMPTOM
POSSIBLE CAUSE
TRANSMITTER BATTERY LED OFF
1) External LED is turned off. Check internal slide
switch.
2) Battery is inserted backwards.
3) Battery is dead.
NO TRANSMITTER MOD LEVEL LEDs
1) Gain control turned all the way down.
2) Battery is in backwards. Check power LED.
3) Mic capsule is damaged or malfunctioning.
RECEIVER RF LAMP OFF
1) Transmitter not turned on.
2) Transmitter battery is dead.
3) Receiver antenna missing or improperly
positioned.
4) Transmitter and receiver not on same frequency.
Check labels on transmitter and receiver.
5) Operating range is too great.
NO SOUND AND RECEIVER MOD LEVEL LEDs ARE OFF
Transmitter audio muted. Make sure bottom
panel "A" switch is turned on. Push switch
toward the letter "A" to turn the audio on.
NO SOUND BUT RECEIVER MOD LEVEL LEDs ARE ON
1) Receiver audio is muted. Refer to receiver
manual.
2) Receiver audio output is disconnected or cable is
defective or mis-wired.
3) Sound system or recorder input is turned down.
DISTORTED SOUND
1) Transmitter gain (audio level) is too high. Speak
or sing into the transmitter and check mod level
lamps on transmitter and receiver.
2) Receiver output may be mis-matched with the
sound system or recorder input.
3) Excessive wind noise or breath "pops."
HISS AND NOISE -- AUDIBLE DROPOUTS
1) Transmitter gain (audio level) too low.
2) Receiver antenna missing or obstructed.
3) Operating range too great.
EXCESSIVE FEEDBACK
1) Transmitter gain (audio level) too high. Check
gain adjustment and/or reduce receiver output
level.
2) Transmitter too close to speaker system.
3) Move transmitter closer to the user's mouth.
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