3M C860 Operating Instructions Manual page 29

Model C860
Problem
No vehicle alert tone in headset.
No communication to or from the
customer when using the backup
intercom.
"Low battery" tones are heard in
headset despite newly charged
battery.
No TALK or LISTEN with known
good belt pack.
Low volume from belt pack to
customer and other headsets.
Audio "cuts out" or is interrupted
when talking to customer or other
headsets.
No transmit to menu sign or other
transceivers when TALK switch is
pressed. PAGE communications
OK.
 3M 2003
January
Possible Cause
The vehicle detector module is not
plugged into the power outlet.
The internal base station alert tone
volume control is set too low.
Defective base station or vehicle
detector module.
The base station is not turned OFF.
No power to the backup intercom.
The volume controls on the backup
intercom are turned too low.
Defective backup intercom.
Dirty contacts on the battery, belt
pack, or in the battery charger.
Defective battery.
Defective belt pack.
System problem.
Headset microphone not positioned
properly beside operator's mouth.
Interference.
Belt pack is too far from the base
station (out of range).
Defective belt pack or base station.
Defective TALK switch or defective
base station.
Troubleshooting
Correction
Plug the vehicle detector module
into the power outlet.
Call for authorized service.
Call for authorized service.
Turn the base station OFF.
Turn the backup intercom ON
and/or plug its power transformer
into the wall outlet.
Turn the volume controls up to
increase volume.
Call for authorized service.
Clean the battery contacts with
alcohol.
Replace the battery.
Call for authorized service.
Call for authorized service.
Reposition microphone (see
Checking the Headset for Proper Fit
in Section 3).
Change channels and reprogram the
belt packs.
Move closer to the base station.
Call for authorized service.
Call for authorized service.
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