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12
Maintenance and Troublesho
Maintenance
1. Place the FWT in a clean and dry environment. The temperature of the place should be
no higher than 55°C or lower than -10°C.
2. If the FWT is covered with dust, please clean it with clean fine cloth. Do not clean it
with cleanser or other chemical solvents.
3. If the FWT does not operate normally due to a failed spare battery, please replace the
spare battery in time or use the power adapter to supply the FWT with power.
4. If the FWT does not work normally, contact your service provider.
Troubleshooting
The display does not turn on after the FWT is powered on (the FWT is
not connected to the power adapter).
1. Make sure that the spare battery is installed.
2. The reason may be that the battery level is low. Connect the FWT to the power adapter.
The display does not turn on after the FWT is powered on (the FWT is
connected to the power adapter).
1. The reason may be that the voltage output of the power adapter does not meet the
requirement of the FWT. In this case, you need to check whether the AC input is
normal and the power adapter is the approved one.
2. The reason may be that the external voltage of the power adapter is low or unstable;
causing that the FWT does not operate normally. In this case, you need to check
whether the external voltage of the power adapter is normal. Alternatively, you can
install the spare battery in the FWT.
There is no signal icon on the display.
1. Make sure that the antenna is installed properly.
2. If there is still no signal, contact your service provider to check whether the FWT is in
the signal coverage area.
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