Queclink GL300W User Manual - page 12
SuperEasy
GSM
Module
User
Manual
TRAC
SuperEasyUM001
7
4. Troubleshooting and Safety info
4.1.
Troubleshooting
Trouble
Possible Reason
Solution
After GL300W is turned on,
the WCDMA LED flashes
quickly always.
The signal is too weak;
GL300W can’t register to the
network.
Please move GL300W into
place with good WCDMA
coverage.
Messages can’t be reported
to the backend server by
GPRS.
APN is wrong. Some APN
cannot visit the internet directly.
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.
Unable to power off
GL300W.
The function of power key was
disabled by
AT+GTFKS
.
Enable the function of power
key by AT+GTFKS.
Unable to power off GL300W if
charger connected or using
external battery.
Disconnect charger or external
battery, and try again.
No response from UART
when configure GL300W
through UART
GL300W is in power saving
mode.
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.
GL300W can’t get
successful GPS fixing.
The GPS signal is weak.
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)
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.