Troubleshooting - Lectrosonics HM Instruction Manual

HM

Troubleshooting

Before going through the following chart, be sure that you have good batteries in the transmitter. It is important that you
follow these steps in the sequence listed.
SYMPTOM
TRANSMITTER PWR LED OFF
AUDIO LEVEL LEDs NOT LIGHTING
RECEIVER RF INDICATOR OFF
NO SOUND (OR LOW SOUND LEVEL), RECEIVER INDICATES PROPER AUDIO MODULATION
DISTORTED SOUND
EXCESSIVE FEEDBACK
14
POSSIBLE CAUSE
1) Batteries are inserted backwards or dead.
2) Transmitter not powered up. (See Operating Instructions,
Power UP and Boot Sequence.)
1) Gain control set to minimum.
2) Batteries are inserted backwards or dead. Check PWR LED.
3) Mic capsule is damaged or malfunctioning.
4) Mic connector is damaged or mis-wired.
1) Transmitter not turned on, or is in Standby Mode.
2) Transmitter batteries are 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.
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 HM
LEDs and receiver audio levels as HM is being used.
2) Receiver output may be mismatched 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.)
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) 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.
LECTROSONICS, INC.