Troubleshooting And Safety Info; Troubleshooting; Safety Info - Queclink GL300W User Manual

SuperEasy GSM Module User Manual

4. Troubleshooting and Safety info

4.1. Troubleshooting

Trouble
After GL300W is turned on,
the WCDMA LED flashes
quickly always.
Messages can't be reported
to the backend server by
GPRS.
Unable to power off
GL300W.
No response from UART
when configure GL300W
through UART
GL300W can't get
successful GPS fixing.

4.2. Safety info

 Please do not disassemble the device by yourself.
 Please do not put the device on the overheating or too humid place, avoid exposure to
direct sunlight. Too high temperature will damage the device or even cause the battery
explosion.
 Please do not use GL300W on the airplane or near medical equipment.
TRAC SuperEasyUM001 7
Possible Reason
The signal is too weak;
GL300W can't register to the
network.
APN is wrong. Some APN
cannot visit the internet directly.
The IP address or port of the
backend server is wrong.
The function of power key was
disabled by AT+GTFKS.
Unable to power off GL300W if
charger connected or using
external battery.
GL300W is in power saving
mode.
The GPS signal is weak.
Solution
Please move GL300W into
place with good WCDMA
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.
Remove the Data_Cable_M,
and plug it in again. After this
operation, GL300W will exit
from power saving mode for 10
seconds.
Re-try GL300W manager tool
again, it will try to wake up
device.
Please move GL300W to a
place with open sky.
It is better to let the top surface
face to sky. (The same surface
with indication LED)