Operating Manual 6175.4760.02 – 01 6.1
M3SR Series 4100 Malfunction
6 Malfunction
6.1 Visual Inspection
If a connector shows any discoloration caused by heat, its mating connector is also
defective and must also be replaced.
Check the following:
1. Check the external wiring between the radio with or without the control unit and the ex-
ternal equipment.
2. Check if all connectors are plugged in firmly.
3. Check the power supply cable and the RF coaxial cables at the rear for mechanical dam-
age.
4. Check fuses at the rear and replace (see sect. 6.1.1 Fuses F1 / F2 - Change), if defec-
tive.
If necessary, replace cables by new ones one by one until the defective connection has been
found.
Obvious damage of minor importance can be corrected at once, assuming that the appropri-
ate equipment is available. In case of severe damage, the transceiver must be sent to the
nearest repair facility.
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