Boya BY-WM4 PRO, Instruction Manual

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Troubleshooting
If you have any problem using the BY-WM4 Pro
components, use the following checklist. If any problem
persist, please consult our local dealer, or contact us
directly.
Status Cause Measure
The units does
not turn on.
The batteries
become drained
quickly.
There is
no sound.
The sound
is weak.
There is distortion
in the sound.
The batteries of BY-WM4 PRO
TX exhausted.
The Power LED of BY-WM4 PRO
RXD doesn’t light up while
connecting with the iOS devices.
The Power LED of BY-WM4 PRO
RXU doesn’t light up while
connecting with the Android
devices.
The BY-WM4 Pro components
is being used under extremely
cold conditions.
The BY-WM4 Pro components
is being used under extremely
hot conditions.
The transmitter and receiver
are not in pairing mode.
The batteries drain quickly under
extremely cold conditions.
The batteries drain quickly under
extremely hot conditions.
Please refer to the Connecting
the transmitter and the Receiver.
The input level of the receiver
is low.
The input level of the receiver
is inappropriate.
Headphones with a monaural
mini jack is used.
The input level of the transmitter
is low. Adjust the audio output
level on the transmitter. Keep this
level as high as possible without
distortion to reach best Sound
and Noise Ratio.
Adjust the audio output level on
the transmitter. Keep this level
as high as possible without
distortion to reach best Sound
and Noise Ratio.
Use the headphones with a
stereo mini jack.
There do not have a good
connection with the lavalier.
There do not have a good
connection with the earphone.
Please try to reconnect it again.
Please try to reconnect it again.
The receiver hasn’t get a well
connection with the devices.
Please try to reconnect it again .
Open the audio/video app on
mobile device, then the indicator
of receiver should be light up.
Replace the batteries with
new ones.
Too much
ambience is
being picked up.
When using an omnidirectional
microphone like the one
included with this system, the
microphone may be picking up
too much ambience.
Make sure the microphone is as
close as to the subject as possible.