Lectrosonics T187 - Manual (Page 9)

VHF Hand-held Transmitter
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
1) 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 defec­
tive or mis-wired.
3) Sound system or recorder input is turned down.
DISTORTED SOUND AND/OR
MOTORBOATING
1) Transmitter gain (audio level) is too high. Speak or sing
into the transmitter and check mod level lamps on trans­
mitter and receiver.
2) Receiver output may be mis-matched with the sound
system or recorder input.
3) Excessive wind noise or breath “pops.”
4) RF feedback getting into Vari-Mic mic capsule. Ensure
that the windscreen is present and screwed down snugly.
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.
Rio Rancho, NM – USA 9