check the installation position of the device, making sure it is not being
shielded by any metal.
10.2 If GSM can not receive the signals normally, please check whether
SIM card is installed correctly or there is no GSM signal at the current
location , such as a basement parking, please drive to a place covered by
GSM signal.
10.3 If the red LED does not work when power is connected, check
whether the fuse is blown. If so, please replace the fuse.
10.4 If the three LEDs do not turn on when power up, press the down
side key, if the three LEDs recover normally, the device is working
normally.
10.5 If you have enabled the web based tracking application, and the
device displays off-line on the platform, please check 3 LEDs status
indicators first. You can check the status of the SIM card when you are in
an inconvenient situation. Please refer to the following steps:
1)Call the device to check whether you can get through.
2)Check whether the SIM card supports GPRS and a local APN.
3)Check the GSM/GPS reception area.
4)Check whether there is enough credit on the SIM card.
5)Check if the connector and terminal is loose or the fuse has blown out.
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