Verify that the time displayed at the screen is correct
and that the indicator lights for Signal connection and
server connection are functioning correctly.
If the indicators are not present (lit), verify the presence
of the SIM card. Validate (if present) that the SIM car is
correctly inserted. Also validate the presence and
connection of the aerial unit.
Note any modifications undertaken during the
commissioning (disconnecting earth cable,
replacement of the SO-DIMM…):