Troubleshooting
Problem
GSM LED stays
dark
GSM LED blinks
twice cyclically
GSM LED blinks
thrice cyclically
GSM LED
constantly on
GSM LED dies
after 3 minutes
STD32 does not
react on
configuration call
(not accepting the
call)
STD32 does not
react on
configuration SMS
40
Possible
reason
No supply
voltage-
No SIM card /
Improper contact
with SIM card
PIN is not "0000"
No GSM
network
available / no
antenna
connected
No configuration
Device is
already
configured
Wrong IMEI
number in the
SMS / SMS not
yet delivered
Solution
Connect power
supply
Insert SIM card
properly or
carefully clean
contact area of
SIM card
Change SIM
card's PIN to
„0000"
Connect antenna
/
Change antenna
position
Make
configuration call
Set back to
factory settings
Check IMEI
number. / Wait
until SMS is
delivered