M3SR Series 4100 Troubleshooting
6.6 Operating Manual 6175.4760.02 – 01
Figure 6.3 Menu Radio MTC 1/7 Indicating an Error (Example)
If the GO LED on the radio front panel or the GO LED on a connected control unit does not 
light up an ERROR has been detected. The radio is not operative and must be transferred 
to a service depot.
To get more details about the detected error(s), check the status of the installed modules 
(see sect. 3.4 Radio Maintenance and Figure 6.4) and the radio error list (see 
sect. 3.4 Radio Maintenance and Figure 6.5).
ICN-4D-G-231000-R-D0894-00047-A-01-1