Troubleshooting And Safety Information; Troubleshooting - Queclink GL300A User Manual

GL300A User Manual

4. Troubleshooting and Safety Information

4.1.Troubleshooting

Trouble
After GL300A is turned on, the
GSM LED always flashes
quickly.
Messages can not be reported
to the backend server by
GPRS.
Unable to power off GL300A.
No response from UART when
GL300A is configured through
UART.
GL300A can not get successful
GNSS fix.
TRACGL300AUM001
Possible Reason
The SIM card is not inserted.
The signal is too weak;
GL300A can not be registered
to the network.
SIM card can not be
registered to the network.
The SIM card in GL300A does
not support GPRS.
APN is wrong. Some APN can
not visit the internet directly.
The IP address or port of the
backend server is wrong.
The function of power key is
disabled by AT+GTFKS.
Unable to power off GL300A if
charger is connected or
external battery is used.
GL300A is in power saving
mode.
The GNSS signal is weak.
Table 3: Troubleshooting
Solution
Please insert the SIM card into
GL300A.
Please move GL300A to a place
with good GSM coverage.
Use a SIM card that can be
registered to network, or
contact your mobile operator.
Try a GPRS supported SIM
card.
Ask the network operator for
the right APN.
Make sure the IP address for
the backend server is an
identified address over 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, GL300A will exit
from power saving mode for
10 seconds.
Restart GL300A Manage Tool
to try to wake up the device.
Please move GL300A to a place
with open sky.
It is recommended to let the
top surface (the same surface
with indication LED) face
towards the sky.
- 16 -