Lectrosonics UT195 - Manual (Page 9)

TROUBLESHOOTING
POWER SUPPLY AND FUSE
LEDs not lit or dimly lit
AC power cord disconnected.
External power supply disconnected or inadequate.
Main power supply fuse tripped. Turn the receiver off, remove the cause of the overload and turn the
receiver back on.
PILOT TONE SQUELCH
The PILOT indicator lamp on the front panel lights up to indicate that the audio has been turned on at the
transmitter, and that the audio output on the receiver is enabled. When the lamp is on, the audio is enabled.
When the lamp is off, the audio is muted.
PILOT lamp on, but no sound
Audio output cable bad or disconnected. Try monitoring at the headphone output on the front panel.
The headphone output signal is taken just ahead of the output transformer.
Audio Output level set too low.
PILOT lamp does not come on when transmitter audio switch is turned on
It takes several seconds for the relay to actuate the PILOT lamp. Turn the transmitter power and audio
switches on and wait 5 to 10 seconds for the lamp to come on.
ANTENNAS AND RF SIGNAL STRENGTH
RF Level is weak.
Antenna is disconnected or there is a bad connection
Antenna may need to be moved or re-oriented
Improper length of antenna, or wrong antenna. UHF whip antennas are generally about 5 to 6 inches
long. UHF helical antennas may be shorter, but are often less efficient.
AUDIO SIGNAL QUALITY
Poor signal to noise ratio
Transmitter gain set too low
Noise may not be in wireless system. Mute the audio signal at the transmitter and see if noise remains. If the
noise remains, then turn the power off at the transmitter and see if it remains. If the noise is still present, then
the problem is not in the transmitter.
If noise is still present when the transmitter is turned off, try lowering the audio output level on the UR195
rear panel and see if the noise lowers correspondingly. If the noise remains, the problem is not in the
receiver.
Receiver output is too low for the input of the device it is feeding. Try increasing the output level of the
UR195 and lowering the input gain on the device the UR195 is feeding.
Distortion
Transmitter input gain too high. Check and/or re-adjust input gain on transmitter according to the LEDs on
the transmitter and then verify the setting with the transmitter audio level LED strip on the UR195 front
panel.
Audio output level too high for the device the UR195 is feeding. Lower the output level of the UR195.
Rio Rancho, NM – USA 9