Troubleshooting - Lectrosonics HHa Instruction Manual

HHa

Troubleshooting

SYMPTOM
TRANSMITTER WILL NOT POWER ON
HH MODULATION LEDs OFF
HH MODULATION LEDs GOOD BUT NO SOUND
RECEIVER RF INDICATOR OFF
NO SOUND BUT RECEIVER AUDIO LEVEL METER INDICATES SOUND
DISTORTED SOUND
HISS AND NOISE -- AUDIBLE DROPOUTS
EXCESSIVE FEEDBACK
16
POSSIBLE CAUSE
1) Batteries are inserted backwards.
2) Batteries are dead, or too low to be used.
1) Audio Gain set too low.
2) Battery is inserted backwards. Check LCD for power indication.
3) Mic capsule is damaged or malfunctioning. Contact the factory
for repair.
1) Talkback function is engaged (release multi-function button).
See p. 11.
2) Receiver on wrong frequency or wrong band.
3) Receiver connected incorrectly to sound system.
4) Transmitter in standby mode.
1) Transmitter not turned on.
2) Transmitter is in "standby" (non-transmitting) mode. Check the
LCD for the antenna/transmission icon status.
3) Batteries are dead or installed backwards.
4) Receiver antenna missing, defective or improperly positioned.
5) Transmitter and receiver not on same frequency band.
Check labels on transmitter and receiver to be sure they are
operating on the same frequency band.
6) Make sure the transmitter and receiver frequency settings are in
agreement.
7) Operating range is too great.
8) Receiver antenna missing, incorrect frequency or disconnected.
1) Receiver audio is muted. (Unmute receiver.)
2) Receiver audio output levels set too low.
3) Receiver audio output is disconnected or cable defective
or mis-wired.
4) Sound system or recorder input level is turned down.
1) Transmitter Audio Gain set too high. Speak or sing into the
transmitter and check the Audio Level LEDs, Audio Level bar
graph in the transmitter
LCD and corresponding indicators on the receiver.
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 setting is not correct (when used with
non-Digital Hybrid receiver).
5) Compatibility Mode mismatch between transmitter and receiver.
6) Mic capsule damaged or defective
1) Transmitter Audio Gain set too low. See page 10 for proper audio
gain setting.
2) Receiver antenna missing, defective or obstructed.
3) Operating range too great.
4) Interference may be present. Turn transmitter off and observe the
RF level indicator on the receiver. Change frequency if necessary.
5) Return attenuator control back to default setting of "F", then
readjust audio gain per instructions on page 10
1) Transmitter Audio Gain set too high. Check level adjustment,
reduce receiver output level, or both.
2) Microphone too close to speaker system.
3) Move microphone closer to the user's mouth and lower the
sound system volume.
LECTROSONICS, INC.