User's Manual

GL300VC User Manual
TRACGL300VCUM001 - 12 -
4. Troubleshooting and Safety info
4.1. Troubleshooting
Trouble Possible Reason Solution
After GL300VC is turned
on, the CDMA-1X LED
flashes quickly always.
The signal is too weak;
GL300VC can’t register to the
network.
Please move GL300VC into
place with good CDMA-1X
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
GL300VC.
The function of power key was
disabled by AT+GTSFR.
Enable the function of power
key by AT+GTFKS.
Unable to power off GL300VC
if charger connected or using
external battery.
Disconnect charger or external
battery, and try again.
No response from UART
when configure GL300VC
through UART
GL300VC is in power saving
mode.
Remove the Data_Cable_M,
and plug it in again. After this
operation, GL300VC will exit
from power saving mode for 10
seconds.
Re-try GL300VC manager tool
again, it will try to wake up
device.
GL300VC can’t get
successful GPS fixing.
The GPS signal is weak. Please move GL300VC 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 GL300VC on the airplane or near medical equipment.