ST240 User Manual
5. Trouble Shooting (LED Indicator)
- Blue LED: Indicates GPRS status.
GPRS
Blink Count Remarks
Normal
1
Server Com. Error 2
<Possible Cause>
1. Server or network parameter is wrong.
2. Server is closed.
3. Temporary network barrier
GPRS Com. Error
3
<Possible Cause>
1. Network parameter is wrong.
2. SIM is blocked about GPRS using.
3. Temporary network barrier
4. Weak GPRS signal
5. GPRS antenna connection is not firm.
No Network
4
<Possible Cause>
1. GPRS antenna is disconnected.
2. GPRS antenna or socket of GPRS antenna is broken.
3. Device is broken.
SIM PIN Locked
5
<Possible Cause>
1. SIM PIN is enabled.
Cannot Attach
NW
6
<Possible Cause>
1. Weak GPRS signal.
2. GPRS antenna connection is not firm.
No SIM
7
<Possible Cause>
1. There is no SIM or SIM is not inserted properly.
2. SIM or SIM socket is broken.
5