5
Signal
detected on
receiver but
no sound
1）Low volume output from
transmitter
2）Line in cable not well
connected on transmitter
3）Wrong
6
Sound
quality is bad
1）Low quality microphone
2）Line-in volume too high
3）Installation
incorrect
4）Transmitter volume too
high
5）Low quality
function on mobile phone
7
No sound
from
microphone
1）Volume of microphone not
turned up
2）Not a
microphone.
8
MP3 cannot
play
1）TF card
2）TF card
3）Audio files are not MP3
format
4）There are files of non
MP3 format in TF
5）Quantity
card exceeds 1000.
9
Bluetooth
cannot
connect
1）Mobile phone too far from
transmitter
2）Mobile phone is not in
music play mode.
About Transmission
Transmission range is greatly affected by the local RF environment,
setting, frequency setting and receiver
may need to upgrade the antenna to higher gain, or install the antenna on places at
altitude.
Generally speaking, a rubber antenna brings up a transmission distance of around 120
FMUSER INTERNATIONAL GROUP INC. 广州市汉婷生物技术开发有限公司
Low volume output from
transmitter
Line in cable not well
connected on transmitter
Wrong audio play mode
1）Check if the line in cable is well
connected with transmitter.
2）Turn up the volume of transmitter
3）Switch to corresponding
play mode.
Low quality microphone
in volume too high
nstallation of antenna is
Transmitter volume too
Low quality Bluetooth
function on mobile phone
1）Set the microphone volume at
minimum when there is no
microphone connected.
2）Use high quality microphone with
shielded wire.
3）Keep the line-in
30%-50% when input into
4）Use mobile phone
Bluetooth quality.
olume of microphone not
up
Not a electret
microphone.
1）Adjust the volume of microphone
between 30% to 70%
2）Use an electret
TF card not inserted
TF card faulty
Audio files are not MP3
There are files of non
MP3 format in TF card.
Quantity of songs in TF
card exceeds 1000.
1）Insert TF card and then press
to play.
2）Check if the TF card is broken.
3）Check if the TF card is in FAT32
format and the audio file
format.
4）Delete non-MP3 files
5）Delete songs to
Mobile phone too far from
transmitter
Mobile phone is not in the
music play mode.
1）Connect the Bluetooth
the distance within 3 meters
2）Reboot mobile phone
connect the Bluetooth
3）Switch the mobile phone to
play mode
Transmission Distance
Transmission range is greatly affected by the local RF environment,antenna type, power
setting and receiver sensitivity. If the transmission range is short, you
the antenna to higher gain, or install the antenna on places at
a rubber antenna brings up a transmission distance of around 120
广州市汉婷生物技术开发有限公司
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Check if the line in cable is well
connected with transmitter.
the volume of transmitter
to corresponding audio
Set the microphone volume at
minimum when there is no
microphone connected.
Use high quality microphone with
in volume at
input into transmitter
mobile phone with better
Adjust the volume of microphone
between 30% to 70%
electret microphone
and then press
Check if the TF card is broken.
Check if the TF card is in FAT32
format and the audio files are MP3
MP3 files
to less than 1000.
Bluetooth and keep
the distance within 3 meters
mobile phone and try to
Bluetooth over 9 times.
mobile phone to stereo
antenna type, power
transmission range is short, you
the antenna to higher gain, or install the antenna on places at higher
a rubber antenna brings up a transmission distance of around 120
