CHC i80 - Introduction to CHC i80 GNSS Receiver; Safety Information and Regulations

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FB11 as picture attached：
2.2：Com port/USB port problem
Fault description:
The receiver cannot make the connection to the PC with the serial cable.
Detection Method &Solution:
（1）The serial cable has some problem.
If so, please replace another serial cable to have a try.
（2）Detect the serial FPC flexible circuit board. Separate the receiver to check the
band correctly install or not.
If not, please re-install or replace the FPC flexible PCB.
（3）The core board chip has fault. When the power supply, the C60 capacitance
voltage should be 5V. If not, please replace the mainboard.