Troubleshooting
Solution
Indicator Status
Issue
•
Verify all sound system connections or adjust gain as needed (see Adjusting Gain).
•
Verify that the receiver is connected to mixer/amplifier.
Receiver
RF
LED on
No sound or faint sound
•
Turn on transmitter.
•
Make sure the batteries are installed correctly.
•
Link transmitter and receiver (see Linking section).
•
Charge or change transmitter battery.
Receiver
RF
LED off
•
Make sure AC adapter is securely plugged into electrical outlet.
•
Make sure receiver is powered on.
Receiver LCD screen
off
Charge or change transmitter battery.
Transmitter indicator
LED flashing red
Disconnect transmitter from charger.
Transmitter plugged
into charger.
•
Change receiver and transmitter to a different group and/or channel.
•
Identify nearby sources of interference (cell phones, Wi-Fi access points, signal pro-
cessor, 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.
RF
LED flickering or
off
Audio artifacts or dropouts
Reduce transmitter gain (see Gain Adjustment).
OL indicator appears
on receiver LCD
Distortion
Update both components to firmware version 2.0 or greater. Download the Shure Update
Utility application and follow the instructions.
Transmitter and
receiver LEDs flash to
indicate that linking
started, but the link
fails
Transmitter and receiver link unsuccessful
Shure Incorporated
GLXD4R
Half-Rack Wireless Receiver
2017/11/28
16/20
