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Troubleshooting
44
Troubleshooting
For example, the response +csq: 31, 99 means that the signal strength is excellent.
If the signal is weaker than -91 dBm (the <rssi> parameter is 11 or less), move the terminal to another
location. If the terminal does not receive a stronger signal, contact your service provider. An external
antenna may improve the reception.
■ Blocked PIN code
If the PIN code you enter fails three times in succession, the code is blocked. You can unblock it by
entering your PUK (Personal Unblocking Key) code. See Access codes on page 46.
When the PIN code is blocked, the light indicators 1 and 2 blink red. To unblock the code, proceed as
follows:
• For example, in the HyperTerminal connection window, type the AT command at+cpin? and press
ENTER. If the PUK code is required, the response is +cpin: SIM PUK.
• Enter the PUK code via the command at+cpin="PUK","PIN"
where PUK is your PUK code and PIN is your old or new PIN code. Press ENTER.
■ No connection
If you do not get an OK response when you enter the at<enter> command in the HyperTerminal
connection window, for example, first check that the port settings are correct. See Entering the PIN
code on page 17.
Check also that
• you use correct RS-232 adapter (the DAU-12 marking can be found at the bottom of the adapter)
• you have set the Connection Type with the Configurator software correctly:
HW selection (default) or AT Commands