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6 troubleshooting, 1 the modem’s led does not light, 2 m1000 keep rebooting all the time – Robustel M1000 User Guide User Manual

Page 82: 3 no connection with modem through serial link, Troubleshooting, The modem’s led does not light, M1000 keep rebooting all the time, No connection with modem through serial link

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Robustel GoRugged M1000 User Guide


RT_UG_M1000 _v.2.0.0

20.12.2013

81 / 83

Confidential

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5.6 Troubleshooting

This section of the document describes possible problems encountered when using the Robustel M1000 modem and
their solutions.

5.5.1 The modem’s LED does not light:

Check if modem has connected to a 9 to 36VDC power supply properly.

Check if the power connector is properly inserted.

5.5.2 M1000 keep rebooting all the time:

Please make sure you have inserted the SIM card.

5.5.3 No connection with modem through serial link

Check if the serial cable has been connected properly.

Check if the serial cable has been made by following pin assignment given in table

PIN Assignment

for RS232

and RS485.

Check if your program has proper setting. Factory setting of the modem under

Normal Mode

is listed at

5.1

.

Check if there is another program interfering with the communication program, such as conflict on
communication port access.