Lectrosonics UCR195 - Manual (Page 12)

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.
• Wrong polarity power source. The external DC
in requires POSITIVE to be on the center pin.
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 off, but sound still comes through
• Pilot Tone Bypass switch may be on. Open the
battery compartment, remove the batteries, and
check the switch nearest to the rear panel. This
switch should be in the position toward the front
panel.
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.
Normal audio on output but the Mod meter on
the front panel is not working.
• The Pilot Tone Disable switch may be on.
Open the battery compartment, remove the
batteries, and check the switch nearest to the rear
panel. This switch should be in the position
toward the front panel.
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 UCR195 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 UCR195 and lowering the input gain
on the device the UCR195 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 UCR195 front panel.
• Audio output level too high for the device the
UCR195 is feeding. Lower the output level of
the UCR195.
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