Troubleshooting & Maintenance 5
2
）
If the infrared sensor works normally, but the problem persists, replace the control unit;
3
）
Contact the relevant technical personnel if the above doesn’t solve the problem.
4.2.4 Unable to update the parameters
1
）
Enter the menu to change the parameter;
2
）
If all settings are not effective, replace the control unit;
3
）
Contact the relevant technical personnel if the above doesn’t solve the problem.
4.3 Malfunctions in inspection functioning
4.3.1 Passengers with no metallic or suspicious items trigger the alarm
Possible cause(s): the sensitivity may be too high; or there may be strong interference
Troubleshooting:
1
）
Eliminate large metallic objects in the surroundings or anything that may cause strong interference, or,
change the installation location;
2
）
Reduce the sensitivity;
3
）
Remove devices with the same frequency nearby;
4
）
Make sure that the location of the WTMD is stable without severe vibration;
5
）
Contact the relevant technical personnel if the above doesn’t solve the problem.
