3M C960, Service Information

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Troubleshooting Guide
3M
t
Headset Intercom System, Model C960
System Troubleshooting
To use this troubleshooting guide, locate the problem in the left column and look for the problem’s possible
causes and corrections in the middle and right columns. Possible causes are listed in the order in which they are
most likely to happen. Check for possible causes in the given sequence to help isolate the problem.
Problem Possible Cause Solution
1. No communications. All
headsets hear static.
1. The base station is not ON. 1. Turn the base station ON.
Make sure the power
transformer is plugged into the
wall outlet and into the base
station power receptacle. If
the red power light does not
come on, check for power at
the wall outlet.
2. Base station and headsets are
not programmed to same
channel.
2. Reprogram the headsets with
the programming cable.
3. The Base Station is defective. 3. Call for authorized service.
2. A single headset hears
static.
1. Headset is not programmed to
same channel as base station.
1. Reprogram theheadset withthe
programming cable.
3. A single headset hears static.
Programming cable has no
effect.
1. Defective programming cable. 1. Try to program other headsets
with the same cable. If they
won’t program, replace the
cable.
2. Defective headset. 2. If the other headsets program
OK, the single headset needs
repair.
4. A single headset is dead. No
static is heard.
1. The headset is not turned on. 1. Press the ON button.
2. The battery is discharged. 2. Replace the battery with a fully
charged one.
3. The headset is defective. 3. Call for authorized service.
5. No vehicle alert tone in
headset.
1. No power to the vehicle
detector.
1. Plug the vehicle detector into
power outlet or replace the
detector fuse.