Lectrosonics UT300VM User Manual download pdf (Page 12)

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, or too low to be used.

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. Contact the

factory for repair.

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 and the frequency switch settings.

5) Operating range is too great.

NO SOUND AND RECEIVER AUDIO LEVEL

METER DOES NOT INDICATE 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 AUDIO LEVEL

METER INDICATES 1) Receiver audio is muted or set too low.

2) Receiver audio output is disconnected or cable

defective 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 transmitter and

receiver. (See page 9)

2) Receiver output level may be too high for the sound

system or recorder input.

3) Excessive wind noise or breath “pops.” Microphone

may require an additional wind screen.

4) Transmitter frequency switches mis-set.

5) 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.

4) Transmitter frequency switches mis-set.

EXCESSIVE FEEDBACK 1) Transmitter gain (audio level) too high. Check gain adjustment

and/or reduce receiver output level.

2) Microphone too close to speaker system.

3) Move microphone closer to the user’s mouth, and lower the

sound system volume.

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Lectrosonics UT300VM User Manual Page 12

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