Quectel LC76G Series User Manual

GNSS Module Series
LC76G_Series_EVB_User_Guide 29 / 33
8 Common Problems and
Troubleshooting
1. U
nable 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 a
nd
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

Quectel LC76G Series Specifications

General

Brand	Quectel
Model	LC76G Series
Category	Motherboard
Language	English