GV75MG User Manual
7. Troubleshooting and Safety Info
7.1.
Troubleshooting
Table 11.
GV75MG Troubleshooting List
Problem
Possible Reason
Solution
After the device is turned
on, the CEL LED always
flashes quickly.
The signal is too weak. The
device isn’t registered to the
network.
Move the device to a place with
good network coverage.
Messages can’t be reported
to the backend server by
network.
APN is not right.
Ask the network operator for
the right APN.
The IP address or port of the
backend server is wrong.
Make sure the IP address for the
backend server is an identified
address in the internet.
There is no response from
UART when the device is
configured by using UART.
The port is not ready or the
device is not powered on.
Please check the port and the
device to ensure they are
working properly.
The device can’t get GPS
fix.
The GPS signal is weak.
Move the device to a place
under open sky.
It is better to make the side
with antenna face the sky.
7.2.
Safety Info
Do not disassemble the device by yourself.
Do not put the device in over heated too humid place, and avoid exposure to direct sunlight.
Too high temperature will damage the device or even cause battery explosion.
Do not use the device on the airplane or near medical equipment.
QSZTRACGV75MGUM0101
12
Queclink
Confidential
