Shure Incorporated
29/37
Issue
Indicator Sta-
tus
Solution
Transmitter in-
dicator LED
flashing red
Charge or change transmitter battery.
Transmitter
plugged into
charger.
Disconnect transmitter from charger.
Audio artifacts or dropouts
RF
LED flicker
ing or off
Change receiver and transmitter to a different group and/or channel.
Identify nearby sources of interference (cell phones, Wi-Fi access
points, signal processor, etc.) and shut down or remove source.
Charge or change transmitter battery.
Ensure that receiver and transmitter are positioned within system
parameters.
System must be set up within recommended range and receiver
kept away from metallic surfaces.
Transmitter must be used in line of sight from receiver for optimal
sound.
Distortion
OL indicator ap
pears on receiv
er LCD
Reduce transmitter gain (see Gain Adjustment).
Transmitter and receiver link
unsuccessful
Transmitter and
receiver LEDs
flash to indicate
that linking start
ed, but the link
fails
Update both components to firmware version 2.0 or greater. Down
load the Shure Update Utility application and follow the instructions.
Sound level variations when
switching to different sources
N/A
Adjust transmitter gain as necessary (see Gain Adjustment).
Receiver/transmitter won't turn
off
Transmitter LED
flashing rapidly
Controls locked. See Locking and Unlocking Controls.
Receiver gain control cannot
be adjusted
N/A
Check transmitter. Transmitter must be on to enable gain changes.
Receiver controls cannot be
adjusted
LK
shown on re
ceiver display
when buttons
are pressed
Controls locked. See Locking and Unlocking Controls.
Transmitter ID function does
not respond
Transmitter LED
flashes green
three times
Controls locked. See Locking and Unlocking Controls.