GV75 User Manual
TRACGV75UM00114
4.
Troubleshooting and Safety Info
4.1.
Troubleshooting
Trouble
Possible Reason
Solution
After GV75 is turned
on, the
CELLEDalwaysflashes
quickly.
The SIM card is not inserted.
Please insert the SIM card into
GV75.
The signal is too weak; GV75can’t
register to the network.
Please move GV75into places with
good GSM coverage.
The SIM card is PIN locked.
Use SIM card without SIM PIN, or
unlock SIM PIN.
Messages can’t be
reported to the
backend server by
GPRS.
The SIM card in GV75doesn’t support
GPRS.
Try a GPRS supporting SIM card.
APN is wrong. Some APNs 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 on the Internet.
GV75 doesn’t power
off.
The function of power key is disabled
by AT+GTSFR.
Enable the function of power key
by AT+GTFKS.
GV75
can’t get
successful GPS
fixing.
The GPS signal is weak.
Please move GV75 to a place with
open sky.
It is better to let the top surface
face the sky.
4.2.
Safety Info
Please do not disassemble the device by yourself.
Please do not put the device in anoverheatedor too humid place, and avoid exposure
to direct sunlight. Too high temperature will damage the device or even cause battery
explosion.
Please do not use GV75 on anairplane or near medical equipment.
Queclink
Confidential
