Troubleshooting And Safety Info; Troubleshooting; Safety Info - Queclink GL320M Series User Manual

GL320M Series User Manual

Troubleshooting and Safety Info

7.

7.1. Troubleshooting

Trouble
After the device is turned
on, the CEL LED always
flashes quickly.
Messages can't be
reported to the backend
server by network.
The device cannot be
powered off.
There is no response
from UART when the
device is configured by
using UART.
The device can't get GPS
fix.

7.2. Safety Info

⚫ Do not disassemble the device by yourself.
⚫ Do not put the device in the overheated or too humid place, and avoid exposure to
direct sunlight. Too high temperature will damage the device or even cause battery
explosion.
⚫ Do not use GL320M on the airplane or near medical equipment.
QSZTRACGL320MUM0100
Table 8. GL320M Troubleshooting List
Possible Reason
The signal is too weak. The
device isn't registered to the
network.
APN is not right.
The IP address or port of the
backend server is wrong.
The function of power key is
disabled by AT+GTFKS.
The device cannot be powered
off if charger is connected or
external battery is used.
The port is not ready or the
device is not powered on.
The GPS signal is weak.
Solution
Move the device to a place with
good network coverage.
Ask the network operator for
the right APN.
Make sure the IP address for
the backend server is an
identified address in the
internet.
Enable the function of power
key by AT+GTFKS.
Disconnect charger or external
battery and try again.
Please check the port and the
device to ensure they are
working properly.
Move the device to a place
under open sky.
It is better to make the side
with antenna face the sky.
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