Quectel LC76G Series, Руководство пользователя

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GNSS Module Series
LC76G_Series_EVB_User_Guide 29 / 33
8
Common Problems and
Troubleshooting
1. Unable to find COM port in the Device Manager when EVB is connected to PC with a USB cable.

Check that the EVB communication interface is properly connected to the PC.

Verify that CP210x Driver has been installed successfully.
2. Communication interface not outputting any messages or commands.

Check that the power supply indication LED on the EVB is illuminated.

Verify that the jumper cap(s) is(/are) connected correctly, as shown in
Figure 1: EVB and
Components .

Ensure that the module's power supply is normal.
3. Module unable to search for satellite signals.

If there is no transponder indoors, test the module in an open-sky environment.
4. Module unable to upgrade.

Verify whether the module is in normal operating mode.

Check that the downloaded firmware is correct.

Confirm that the correct COM port has been selected.
For the problem(s) that cannot be solved, please contact Quectel Technical Support
(
support@quectel.com ).
NOTE