Troubleshooting - Lectrosonics SM Operating Instructions Manual

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
TRANSMITTER PWR LED OFF
NO TRANSMITTER MODULATION LEDs
RECEIVER RF INDICATOR OFF
NO SOUND (OR LOW SOUND LEVEL),
RECEIVER INDICATES PROPER AUDIO
MODULATION
DISTORTED SOUND
HISS AND NOISE -- AUDIBLE DROPOUTS
EXCESSIVE FEEDBACK
"L" APPEARS IN DISPLAY WHEN ANY
BUTTON IS PRESSED
Frequency Agile UHF Ultra-Miniature Belt-Pack Transmitter

TROUBLESHOOTING

POSSIBLE CAUSE
1) Battery is inserted backwards.
2) Battery is dead.
3) Transmitter not powered up. (See Operating Instructions, Power
UP and Boot Sequence. )
1) Gain control set to minimum.
2) Battery is in backwards. Check PWR LED.
3) Mic capsule is damaged or malfunctioning.
4) Mic cable damaged or mis-wired.
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
switches/display on transmitter and receiver.
5) Transmitter and receiver not on same frequency block.
6) Operating range is too great.
7) Defective transmitter antenna.
1) Receiver output level set too low.
2) Receiver output disconnected, or cable defective or mis-wired.
3) Sound system or recorder input is turned down.
1) Transmitter gain (audio level) is far too high. Check SM
Modulation LEDs and receiver audio levels as SM is being used.
2) Receiver output may be mis-matched with the sound
system or recorder input. Adjust output level on receiver
to the correct level for the recorder, mixer or sound
system. (Use the receiver's Tone function to check level
settings.)
3) Excessive wind noise or breath "pops." Reposition
microphone and/or use a larger windscreen.
4) Transmitter is not set to same frequency as receiver.
Check that operating frequency on receiver and
transmitter match.
5) Receiver/Transmitter Compatibility Mode mismatched.
1) Transmitter gain (audio level) far too low.
2) Receiver antenna missing or obstructed.
3) Transmitter antenna missing.
4) Operating range too great.
5) Signal interference. Turn off transmitter. If receiver's signal
strength indicator does not drop to nearly zero, this indicates an
interferring signal may be the problem. Try a different operating
frequency.
1) Transmitter gain (audio level) too high. Check gain
adjustment and/or reduce receiver output level.
2) Talent standing too close to speaker system.
3) Mic is too far from user's mouth.
1) Control Panel is locked. (See Operating Instructions, Locking
and Unlocking the Control Panel. )
Rio Rancho, NM – USA
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