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11
Maintenance and
Troubleshooting
Maintenance
1.
Place the FWT in a clean and dry environment. The temperature of the place should be
between –10
°
C and 55
°
C.
2.
If the FWT is covered with dust, clean it with fine and clean cloth. Do not clean it with
cleanser or other chemical solvents.
3.
If the FWT does not operate normally due to a battery failure, replace the battery in
time or use the power adapter to power the FWT.
4.
If the FWT does not work normally, contact your service provider.
Troubleshooting
The 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 screen does not turn on after the FWT is powered on (the FWT is
connected to the power adapter).
1.
The output voltage 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, which disrupts 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.
The signal icon does not appear on the screen.
1.
Make sure that the antenna is installed properly.
2.
If the problem persists, contact your service provider to check whether the FWT is in
the signal coverage area.
