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12
Maintenance and
Troubleshooting
Maintenance
Place the FWT in a clean and dry environment. The
1.
temperature of the place should be no higher than 55°C or
lower than -10°C.
If the FWT is covered with dust, please clean it with fine
2.
clean cloth. Do not clean it with cleanser or other chemical
solvents.
If the FWT does not operate normally due to a failed spare
3.
battery, please replace the spare battery in time or use the
power adapter to supply the FWT with power.
If the FWT does not work normally, contact your service
4.
provider.
Troubleshooting
The display screen does not turn on after the FWT is
powered on (the FWT is not connected to the power
adapter).
Make sure that the spare battery is installed.
1.
The battery level is low. Connect the FWT to the power
2.
adapter.
The display screen does not turn on after the FWT is
powered on (the FWT is connected to the power adapter).
The voltage output of the power adapter does not meet the
1.
requirement of the FWT. Check whether the AC input is
normal and the power adapter is the approved one.
48
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