20
Trouble-shooting
Problem: No sound
Solution:
When working correctly, both the RF Level and AF Level
meter displays in the UR-4 receiver should be lit when signal is present.
If they aren’t, follow these step-by-step troubleshooting suggestions to
identify the problem. If the answer to any of these questions is “no,”
you’ve probably located the difficulty. If both the RF Level and AF Level
displays are lit, you can skip ahead to questions 8, 9 and 10.
1. Are your transmitter and receiver both powered on? When first
powered on, the “Battery” LED in the UT-4 and UH-4 will light for two-
tenths of a second and then go off, and one or more segments of the
UR-4 RF Level display will be continuously lit, indicating carrier trans-
mission.
2. Is the battery in your transmitter fresh? (If not, the “Battery” LED will
be lit bright red).
3. If you’re using the UT-4 belt-pack transmitter, is the “GTR/MIC” input
switch set correctly? If so, is the physical lavalier, headset or instrument
cable connection correctly wired and secure? If you’re using the UT-4
for electric guitar or bass, check to see that the instrument’s settings
are correct (i.e. master volume up, etc.).
4. Is the “MUTE” LED on the receiver off and is the “Mute” switch on
the transmitter set to “Off”?
5. If you are using the UH-4 or the UT-4 with a lavalier or headset
microphone, is the UH-4 Audio or UT-4 MIC Level control (trimpot) on
the transmitter set to a value greater than 0? If you are using the UT-4
with an instrument, is the GTR Level control (trimpot) on the transmitter
set to a value greater than 0?
6. Is the Volume knob on the receiver set to a value greater than 0?
7. Are your transmitter and receiver both operating on the same
channel number? (If not, contact Samson.)
8. Is the cable connection between the UR-4 output and your
mixer/amplifier input secure?
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