3M C860 Operating Instructions Manual - page 29
Model C860 Troubleshooting
3M 2003 January
23
Problem Possible
Cause
Correction
No vehicle alert tone in headset.
The vehicle detector module is not
plugged into the power outlet.
Plug the vehicle detector module
into the power outlet.
The internal base station alert tone
volume control is set too low.
Call for authorized service.
Defective base station or vehicle
detector module.
Call for authorized service.
No communication to or from the
customer when using the backup
intercom.
The base station is not turned OFF.
Turn the base station OFF.
No power to the backup intercom.
Turn the backup intercom ON
and/or plug its power transformer
into the wall outlet.
The volume controls on the backup
intercom are turned too low.
Turn the volume controls up to
increase volume.
Defective backup intercom.
Call for authorized service.
“Low battery” tones are heard in
headset despite newly charged
battery.
Dirty contacts on the battery, belt
pack, or in the battery charger.
Clean the battery contacts with
alcohol.
Defective battery.
Replace the battery.
Defective belt pack.
Call for authorized service.
No TALK or LISTEN with known
good belt pack.
System problem.
Call for authorized service.
Low volume from belt pack to
customer and other headsets.
Headset microphone not positioned
properly beside operator’s mouth.
Reposition microphone (see
Checking the Headset for Proper Fit
in Section 3).
Audio “cuts out” or is interrupted
when talking to customer or other
headsets.
Interference.
Change channels and reprogram the
belt packs.
Belt pack is too far from the base
station (out of range).
Move closer to the base station.
Defective belt pack or base station.
Call for authorized service.
No transmit to menu sign or other
transceivers when TALK switch is
pressed. PAGE communications
OK.
Defective TALK switch or defective
base station.
Call for authorized service.