Lectrosonics UCR195D User Manual download pdf (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.

• 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 UCR195D 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 UCR195D and lowering the input

gain on the device the UCR195D 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 UCR195D front panel.

• Audio output level too high for the device the

UCR195D is feeding. Lower the output level of

the UCR195D.

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Lectrosonics UCR195D User Manual Page 12

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