Troubleshooting; Error Codes And Solutions - Shure QLX-D User Manual

Troubleshooting

Issue
No Sound
Faint sound or distortion
Lack of range, unwanted noise bursts,
or dropouts
Cannot turn transmitter off or change
frequency settings, or can't program
receiver
Receiver display shows FAIL after en-
cryption is disable
Group and Channel display shows "--" Custom Group IR Sync
Power
Make sure that the receiver and transmitter are receiving sufficient voltage. Check the battery
indicators. Replace or recharge the batteries if necessary.
Gain
Adjust the system gain on the front of the receiver. Ensure the mic/line switch setting
(XLR output only) on the back of the receiver corresponds to the input of the mixing console,
amplifier, or processor.
Cables
Check that all cables and connectors are fully engaged or locked into position. Inspect cables
for damage. Replace if necessary.
Interface Locks
The transmitter and the receiver can be locked to prevent accidental or unauthorized
changes. If a locked control is accessed, the lock icon on the display will flash. Follow the
instructions to unlock the receiver or transmitter.
Firmware Mismatch
Paired transmitters and receivers must have the same firmware version installed to ensure
consistent operation. See Firmware Updates topic for firmware update procedure.
Encryption Mismatch
Indicates an encryption key mismatch has been detected. Perform an IR sync between the
receiver and transmitter to clear the error.
Custom Group IR Sync
When using Custom Groups, always perform an IR sync from the Custom Groups
menu in the receiver to ensure accurate display of group and channel information. See
Custom Groups topic for additional details.
Radio Frequency (RF)
The blue RF LED will illuminate when a linked transmitter is within range of the receiver.
Measure the transmitter range before a performance to avoid operating beyond the specified
transmitter range.
The RF meter bars indicate amount of RF power being received. This signal could be from the
transmitter, or it could be from an interfering source, such as a television broadcast. If
the meter shows a signal level when the transmitter is off, then that channel may have interfer-
ence. Check the surrounding area for sources of interference or change the receiver to a clear
frequency.
A red RF LED indicates RF overload. Avoid operating multiple systems in close proximity.
Frequency Compatibility
- Perform a Scan and Sync to ensure the transmitter and receiver are set to the
same channel or frequency
- Look at the label on the transmitter and receiver to make sure they are in the
same band (G50, J50, L50, etc...).
Reducing Interference
- Perform a scan to find the best open frequency. Perform an IR sync to transfer
the settings to the transmitter.
- For multiple systems, make sure that each receiver is assigned to a unique
channel. Interference will occur if two transmitters are set to the same
channel.
- Maintain a line of sight between transmitter and receiver antennas.
- Move receiver antennas away from metal objects or other sources of RF in-
terference (such as CD players, computers, digital effects, network switches,
network cables and Personal Stereo Monitor (PSM) wireless systems).
- Eliminate RF overload (see below).
Increasing Range
- Increase transmitter RF power level to Hi
- Use an active directional antenna, antenna distribution system, or other anten-
na accessory to increase RF range
Eliminating RF Overload
If the RF OL icon appears on the RF meter, try the following:
- Reduce the transmitter RF power level from Hi to Lo
- Move the transmitter further away from the receiver—at least 6 m (20 ft)
- If you are using active antennas, reduce antenna or amplifier gain.
- Use omnidirectional antennas
See Solution...
Power, Cables, or Radio Frequency
Gain, Cables, Reducing Interference or
Radio Frequency
RF
Interface Locks
Encryption Mismatch

Error Codes and Solutions

Error codes are generated when the receiver detects a condition that can potentially affect system
performance.
If an error is displayed on the receiver, use the following table to identify the problem and find the
corresponding solution.
Error Code Description
Audio Compatibility
Err.001
Encryption Mismatch
Err.002
between Shure product
lines
Encryption Mode
Err.003
Mismatch
Band Mismatch
Err.004
Frequency Mismatch
Err.005
No Frequencies Found
Err.006
Firmware Mismatch
Err.007
Shure SB900 battery
Err.008
runtime does not appear
on display
Solutions
Update transmitter and
receiver firmware to the
latest version.
Set encryption to off
for components from
different Shure products
lines, such as QLX-D and
ULX-D.
Perform an IR sync be-
tween the transmitter and
receiver to clear the error.
Receiver and transmitter
are operating in overlap-
ping frequencies from
different bands.
Receiver and transmitter
are from bands that do
not share compatible
frequencies.
Rescan, select a different
group, or use WWB to
find a frequency.
Update firmware on the
transmitter and receiver.
Check that battery is
firmly installed into the
battery compartment. If
condition persists, re-
place the battery.
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