Shure Incorporated
15/20
To lock the channel:
Hold the
channel
button until the numbers flash (~10 seconds)
To unlock the channel:
Hold the
channel
button until the numbers flash (~5 seconds)
Troubleshooting
Issue
Indicator Status
Solution
No sound or faint sound
Receiver
ready
LED on
Verify all sound system connections
Receiver ready LED off
Turn on transmitter
Make sure the batteries are installed
correctly
Perform automatic transmitter setup
Insert fresh batteries
Receiver LED screen off
Make sure AC adapter is securely
plugged into electrical outlet
Transmitter indicator LED flashing
red
Replace transmitter batteries
LED screen shows dash and value
Error code displayed. Contact your
Shure reseller for assistance.
Transmitter LED flashes red for 7
seconds after attempting to sync
Transmitter and receiver incompatible.
Contact your Shure reseller for assis-
tance.
Noise bursts or audio dropouts
N/A
Change receiver and transmitter to a
different channel
Remove nearby sources of RF interfer-
ence such as cordless or cell phones,
computers, wireless routers, media
players, digital signal processors, and
security systems.
Replace transmitter batteries
If using multiple systems, change the
frequency of one of the active systems
Distortion
Audio LED on receiver indicates clip-
ping (red)
Reduce transmitter gain
Distortion increases gradually over
time
Transmitter power light glowing or
flashing red
Replace transmitter batteries
Sound level different from cabled
guitar or microphone or when using
different guitars
N/A
Adjust transmitter gain as necessary
