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10Maintenance and Troubleshooting
Maintenance
• Place the FWT in a clean and dry environment. The
temperature of the place should be no higher than 55
℃ or lower than -10 ℃ .
• If the FWT is covered with dust, please clean it with fine
clean cloth. Do not clean it with cleanser or other chem-
ical solvents.
• If the FWT does not operate normally due to a failed
battery, please replace the battery in time or use the
power adapter to supply the FWT with power.
• If the FWT does not work normally, contact your service
provider. Before installing and using FWT, read the user
guide carefully.
Troubleshooting
The display screen does not turn on after the
FWT is powered on (the FWT is not connected to
the power adapter).
1 Make sure that the battery is installed.
2 The battery level is low. Connect the FWT to the
power adapter.
The display screen does not turn on after the
FWT is powered on (the FWT is connected to the
power adapter).
1 The voltage output of the power adapter does
not meet the requirement of the FWT. Check
whether the AC input is normal and the power
adapter is the approved one.
2 The external voltage of the power adapter is low
or unstable; disrupting the normal functioning of
the FWT. Check whether the external voltage of
the power adapter is normal. You can also install
the battery in the FWT.
There is no signal icon on the display screen.
1 Make sure that the antenna is installed properly.
2 If there is still no signal, contact your service pro-
vider to check whether the FWT is in the signal
coverage area.
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