3M C860 User manual

Belt Pack Intercom System
Model C860
Operating Instructions

Model C860 Table of Contents
3M 2003 January i
Intended Use........................................................................................................................................... iii
FCC Information................................................................................................................................... iii
System Description ................................................................................................................................ 1
Introduction..................................................................................................................................................... 1
System Configurations.................................................................................................................................... 1
Single-Lane Standard Communication System........................................................................................ 1
Single-Lane Duplex Communication System........................................................................................... 1
Dual-Lane Standard Communication System........................................................................................... 1
Dual-Lane Duplex Communication System............................................................................................. 1
Cross-Lane Communication System......................................................................................................... 1
System Components........................................................................................................................................ 2
Base Station.............................................................................................................................................. 2
Headset and Belt Pack .............................................................................................................................. 2
Battery Charger......................................................................................................................................... 2
Controls and Indicators ........................................................................................................................ 3
Base Station..................................................................................................................................................... 3
Headset and Belt Pack..................................................................................................................................... 4
Battery Chargers.............................................................................................................................................. 6
Headset/Belt Pack Preparation ............................................................................................................ 7
Introduction..................................................................................................................................................... 7
Checking the Headset for Proper Fit............................................................................................................... 7
Positioning the Microphone...................................................................................................................... 7
Connecting the Headset to the Belt Pack.................................................................................................. 8
Installing the Belt Pack............................................................................................................................. 8
Wearing the Belt Pack .............................................................................................................................. 9
Operation................................................................................................................................................ 10
System Startup................................................................................................................................................. 10
Turning On the Base Station..................................................................................................................... 10
Turning On the Belt Pack......................................................................................................................... 10
Operating Modes............................................................................................................................................. 10
Standby Mode........................................................................................................................................... 10
Talk/Listen Mode...................................................................................................................................... 10
Talk Lock Mode (“Hands Free”).............................................................................................................. 11
Page Mode................................................................................................................................................ 12
Page Monitor Mode.................................................................................................................................. 12

Table of Contents Model C860
ii 3M 2003 January
Special Considerations.................................................................................................................................... 13
Maintenance........................................................................................................................................... 14
Belt Pack......................................................................................................................................................... 14
Replacing the Battery............................................................................................................................... 14
Replacing the Headset Pad....................................................................................................................... 14
Battery Charger............................................................................................................................................... 15
Location.................................................................................................................................................... 15
Cleaning the Contacts............................................................................................................................... 15
Batteries.......................................................................................................................................................... 15
Care, Handling and Storage...................................................................................................................... 15
Battery Voltage Low Tone....................................................................................................................... 15
Charging Batteries.................................................................................................................................... 15
Disposing of Batteries.............................................................................................................................. 16
Making Sure Batteries are Ready for Use................................................................................................ 16
Important Information about C860 Rechargeable Batteries..................................................................... 16
Special Instructions for System Manager ........................................................................................... 18
Programming the Belt Pack for Cross-Lane Operation.................................................................................. 18
Reprogramming........................................................................................................................................ 18
Changing Channels if Interference is Heard................................................................................................... 19
Changing the Day/Night Switch Setting......................................................................................................... 20
Adjusting the Monitor Speaker Volume......................................................................................................... 21
Troubleshooting..................................................................................................................................... 22
Introduction..................................................................................................................................................... 22
System Troubleshooting ................................................................................................................................. 22
Battery and Battery Charger Troubleshooting................................................................................................ 24
Service ............................................................................................................................................................ 25

Model C860 Important Information
3M 2003 January iii
Intended Use
The 3M Belt Pack Intercom System, Model C860, is designed to provide 2-way
radio-frequency audio communication in quick service drive-through restaurants
and convenience stores.
Misuse of the Model C860 could result in poor performance and/or undesired
operation.
FCC Information
This device complies with part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any interference received, including interference
that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.

Important Information Model C860
iv 3M 2003 January
(Blank Page)

Model C860 System Description
3M 2003 January 1
The 3M Model C860 Belt Pack Intercom System is a wireless intercom system
designed for high reliability, compactness, and ease of service.
The system can be programmed to operate on any one of eight different radio
channels to provide high-quality audio performance and reduce the possibility of
interference between neighboring wireless systems.
The system can be configured in one of five ways depending on the number of
menu signs (lanes) at the facility and the type of communication desired.
The single-lane standard communication system provides standard
communication (talk or listen) for facilities that have one menu sign.
The system consists of one base station and one or more belt packs and battery
chargers.
The single-lane duplex communication system provides duplex communication
(simultaneous talk and listen) for facilities that have one menu sign.
The system consists of one base station and one or more belt packs and battery
chargers.
The dual-lane standard communication system provides standard
communication (talk or listen) for facilities that have two menu signs.
The system consists of two independent systems - one dedicated to menu sign 1
and the other dedicated to menu sign 2. The belt packs are programmed to work
with one system or the other and are labeled accordingly (1 or 2).
The dual-lane duplex communication system provides duplex communication
(simultaneous talk and listen) for facilities that have two menu signs.
The system consists of two independent systems - one dedicated to menu sign 1
and the other dedicated to menu sign 2. The belt packs are programmed to work
with one system or the other and are labeled accordingly (1 or 2).
The cross-lane communication system provides duplex communication
(simultaneous talk and listen) for facilities that have two menu signs.
The system consists of two duplex systems that are connected to a cross-lane
module. The belt packs are programmed for either lane 1 or lane 2.
During off-peak hours, the cross-lane module can be turned ON to link the two
systems and enable one operator to simultaneously talk and listen to customers
at menu sign 1 or menu sign 2 or with other headset operators.
During peak hours, the cross-lane module can be turned OFF to separate the
systems and enable menu sign 1 operators to talk to customers at menu sign 1,
and menu sign 2 operators to talk to customers at menu sign 2.
Introduction
System
Configurations
Single-Lane Standard
Communication
System
Dual-Lane Standard
Communication
System
Dual-Lane Duplex
Communication
System
Single-Lane Duplex
Communication
System
Cross-Lane
Communication
System

System Description Model C860
23M 2003 January
The number of system components and the procedures necessary to operate
them vary depending on the system configuration. However, three components
are common to all system configurations.
The base station is the interface between the customer and the belt pack worn by
the operator. See Figure 1.
Figure 1. Base Station
The belt pack is used by the operator to communicate with customers and with
other store personnel who are wearing belt packs.
The headset is connected by a communications cable to the battery-powered belt
pack. See Figure 2.
Figure 2. Headset and Belt Pack
The battery charger charges batteries in approximately 1.5 to 2 hours. The
charger is available in 3-slot and 6-slot versions. See Figure 3.
Figure 3. 3-Slot and 6-Slot Battery Chargers
System
Components
Base Station
Headset and Belt Pack
Battery Charger

Model C860 Controls and Indicators
3M 2003 January 3
The base station controls and indicators are shown below.
Figure 4. Base Station Controls and Indicators
The ON/OFF switch controls power to the base station.
This indicator lights when the ON/OFF switch is in the ON position.
Note
If for some reason the C860 headset system does not operate and the system
includes an optional wired backup system, turn off the C860 Base Station to
enable the backup system.
With the switch in the DAY position, the volume of the menu sign speaker is
increased for daytime operation. With the switch in the NIGHT position, the
volume of the menu sign speaker is decreased for nighttime operation. (Sound
travels further and more efficiently at night.)
These indicators light to show which of the 8 channels is selected.
This indicator blinks when the Noise Reduction Module is switched on.
This button turns the optional Noise Reduction Module on or off.
This indicator lights when headset Page communications occur.
This indicator lights when headset–to–menu sign “Talk” communications occur.
This indicator lights when a vehicle is detected at the menu sign.
This access hole allows for adjusting the volume of the optional monitor
speaker.
Base Station
1 ON/OFF Switch
2 POWER Indicator
3 VOLUME
DAY/NIGHT
Switch
4 Channel Indicators
5
N
RM In
d
i
c
at
o
r
6 NRM On/Off
Button
7 Page Indicator
8 Talk Indicator
9 Vehicle Indicator
10 Monitor Volume
Access

Controls and Indicators Model C860
43M 2003 January
The controls on the belt pack are shown below.
Figure 5. Controls
Press and hold the Page switch to talk to internal personnel without being heard
by the customer. Release the switch to listen.
Press the volume down control to decrease the volume.
When either volume control is pressed, the headset emits a short tone to indicate
the new volume level. There are 15 different volume levels from minimum to
maximum.
If the headset volume is at its maximum level, a low, continuous tone sounds
when the volume up control is pressed. A low, continuous tone also occurs
when the volume reaches minimum level and the volume down c control is
pressed.
Note that even when set to its lowest level, headset volume is not turned
completely off.
Press the volume up control to increase the volume in the headset earpiece.
Press the ON switch to turn on the belt pack.
Press the OFF switch to turn off the belt pack.
For duplex systems where hands free operation is desired, press the talk lock
switch once to talk and listen to the customer. This enables hands-free
operation.
For dual-lane systems, press and hold the T2 (Talk Lane 2) switch to talk to the
customer at the menu sign in lane 2. Release the switch to listen.
For single-lane systems, both switches operate identically.
Headset and Belt Pack
1 Page Switch
2 Volume Down
Control
3 Volume Up
Control
4 ON Switch
5 OFF Switch
6 Talk Lock Switch
(Hands Free)
7 T2 (Talk Lane 2)
Switch

Model C860 Controls and Indicators
3M 2003 January 5
Press and hold the T1 (Talk Lane 1) switch to talk to the customer in lane 1.
Release the switch to listen.
Push the battery release toward the center of the unit to release the battery.
This rechargeable battery provides power to the control unit.
This jack accepts the programming cable from the base station to allow the belt
pack to be programmed to the same radio channel as the base station.
The microphone sends the operator’s voice to the customer and/or other headset
operators.
The earphone is a speaker that broadcasts the voice from the customer or other
headset operators. The replaceable earpad covers the earphone and cushions the
operator’s ear to provide comfort.
8 T1 (Talk Lane 1)
Switch
9 Battery Release
10 Battery
11 Programming Jack
12 Microphone
13 Earphone/Earpad

Controls and Indicators Model C860
63M 2003 January
The 3-slot and 6-slot battery charger controls are shown below.
Figure 6.
The charging slots hold batteries during the recharging cycle.
This dual-function slot holds a battery during conditioning and recharging
cycles. This slot functions as a conditioning slot when the conditioning button is
pressed.
The charging status indicators light RED, GREEN, or ORANGE to indicate
charging status:
RED indicates the battery is being charged.
GREEN to indicate the battery is fully charged.
ORANGE to indicate the battery is defective.
Press the conditioning button to condition a battery that is inserted in the
conditioning/charging slot. The button must be pressed within 2 seconds of
inserting the battery.
The conditioning status indicator lights YELLOW to indicate the battery in the
conditioning slot is being conditioned.
This jack accepts the plug from the power supply cord.
The power supply provides power to the battery charger.
Battery Chargers
1 Charging Slots
2 Conditioning
and/or
Char
g
in
g
Slot
3 Charging Status
Indicators
4 Conditioning
Button
5 Conditioning
Status Indicator
6 Power Supply Jack
7 Power Supply

Model C860 Headset/Belt Pack Preparation
3M 2003 January 7
To prepare the headset for use, you will need to check the headset for proper fit.
To ensure effective operation and comfort:
•Adjust the headband width by gently bending the headband.
•Position the ear pad and microphone.
Figure 7. Headband Size
Position the microphone so that its tip is near the corner of your mouth. See
Figure 8.
Figure 8.
Introduction
Checking the
Headset for
Proper Fit
Positioning the
Microphone

Headset/Belt Pack Preparation Model C860
83M 2003 January
To connect the headset to the belt pack:
1. Insert the communications plug at the end of the headset cable into the
modular jack in the bottom of the belt pack. See Figure 9.
2. Press the cable into the cable channel on the bottom of the belt pack. See
Figure 9.
•Direct the cable toward the Page button to wear the belt pack on the
right hip.
•Direct the cable toward the Talk Lane 1 button to wear the belt pack on
the left hip.
Figure 9. Connecting the Headset to the Belt Pack
To install the belt pack into the belt pack:
1. Open the flap at the bottom of the belt pack.
2. Insert the belt pack face up (so that the controls are accessible through the
openings on the belt pack top). See Figure 10.
3. Extend the headset cable as follows:
•Toward the Page button to wear the unit on the right hip.
•Toward the Talk Lane 1 button to wear the unit on the left hip.
4. Close the flap.
Connecting the
Headset to the Belt
Pack
Installing the Belt
Pack

Model C860 Headset/Belt Pack Preparation
3M 2003 January 9
Figure 10. Installing the Belt Pack
The belt pack can be worn on either hip.
To wear the belt pack on the left hip, slide the belt through the belt holder slot
until the buckle of the belt is at the front of the body and the unit is on the left
hip. See Figure 11.
To wear the belt pack on the right hip, slide the belt through the belt holder slot
until the buckle of the belt is at the front of the body and the unit is on the right
hip. See Figure 11.
Figure 11.
Wearing the Belt Pack

Operation Model C860
10 3M 2003 January
System startup includes turning on the base station and each belt pack that will
be used.
To turn on the base station:
1. Slide the power ON/OFF switch to the ON position. Check to see that the
POWER indicator lights.
2. Slide the VOLUME switch to the desired position (DAY or NIGHT).
To turn on the belt pack, press the ON switch located on the belt pack. A single
tone will sound in the headset to indicate the unit has been turned on.
The system has several operating modes. The number of available operating
modes depends on the system configuration (single-lane vs. dual-lane, standard
communication vs. duplex communication, etc.).
In the standby mode, the belt pack is on and waiting to receive communication
from the customer or other headset operators. This mode is available with all
system configurations.
Use the talk/listen mode to talk to the customer. This mode is available with all
system configurations.
Single-Lane Standard or Duplex Communication Systems
1. A single beep alert tone sounds in the headset at 2-second intervals when the
system detects a customer (vehicle) at the menu sign.
2. When you hear the alert tone, press and hold T1 or T2 to talk to the
customer at the menu sign. Release T1 or T2 to listen.
Dual-Lane Standard or Duplex Communication Systems
In dual-lane systems, some belt packs are programmed to communicate with
Lane 1 and others are programmed to communicate with Lane 2.
1. An alert tone sounds in the headset when the system detects a customer
(vehicle) at the menu sign:
•The alert tone for Lane 1 headsets is a single beep that repeats at
2-second intervals.
•The alert tone for Lane 2 headsets is a double beep that repeats at
2-second intervals.
2. When you hear the single beep alert tone, press and hold T1 and talk to the
customer. Release T1 to listen.
When you hear the double beep alert tone, press and hold T2 to talk to the
customer. Release T2 to listen.
Cross-Lane Communication Systems
Communication During Peak Hours
During peak hours, the cross-lane module is turned off and the system functions
like a dual-lane duplex system. Some belt packs are programmed to
communicate with Lane 1 and others are programmed to communicate with
Lane 2.
System Startup
Turning On the Base
Station
Turning On the Belt
Pack
Operating Modes
Standby Mode
Talk/Listen Mode

Model C860 Operation
3M 2003 January 11
Communication During Off-Peak Hours
During off-peak hours, the cross-lane module is turned on to enable a single
operator to communicate with customers in either lane (1 or 2).
1. An alert tone sounds in the headset when the system detects a customer
(vehicle) at the menu sign:
•The alert tone for Lane 1 belt packs is a single beep that repeats at 2-
second intervals.
•The alert tone for Lane 2 belt packs is a double beep that repeats at 2-
second intervals.
2. When you hear the single beep alert tone, press and hold T1 and talk to the
customer at menu sign 1. Release T1 to listen.
When you hear the double beep alert tone, press and hold T2 to talk to the
customer at the menu sign 2. Release T2 to listen.
Use this mode to operate “hands free.” The talk lock mode is only available
with duplex system configurations.
In this mode, the belt pack automatically switches from standby to talk/listen
when a customer is detected. The belt pack automatically switches back to
standby when the customer leaves.
Note
“Hands free” operation (talk lock mode) prevents all other headset operators
from talking. “Hands free” will not work in cross-lane mode.
To use the talk lock mode, press the talk lock switch on the belt pack. To return
to normal operation, press T1 or P.
Talk Lock Mode
(“Hands Free”)

Operation Model C860
12 3M 2003 January
Use this mode to talk to other operators who are wearing headsets without being
heard by the customer at the menu sign. This mode is available with all system
configurations.
To page another operator, press and hold the page switch while speaking.
Release the page switch to listen.
Note
If you are not a menu sign operator, do not use the page mode while the menu
sign operator is communicating. Doing so may interrupt or prevent
communication between the menu sign operator and the customer.
Use this mode to listen for pages from other operators (without hearing the
communication to and from the customer). This feature is convenient for
managers who only want to hear page communication. This mode is available
with all system configurations.
To use the page monitor mode:
1. Turn the belt pack OFF. See Figure 12.
Figure 12. OFF Switch
2. Press and hold the page button while pressing and holding the ON button,
up to 5 seconds, until audible tones are heard. This locks the belt pack in
the page monitor mode. See Figure 13.
Page Mode
Page Monitor Mode

Model C860 Operation
3M 2003 January 13
Figure 13. Page Switch and OFF Switch
To respond to a page, press P (page switch).
To return to normal operation:
1. Turn the belt pack OFF.
2. Turn the belt pack ON.
When using the talk/listen mode or the page mode, keep the following things in
mind:
•Communication between the operator and the customer may be heard by
several people.
•Only one operator can talk at a time.
•In the talk/listen mode, communication from the belt pack is heard by
customers and other operators who are wearing headsets.
Special
Considerations

Maintenance Model C860
14 3M 2003 January
When the battery voltage is too low, the headset sounds a short, low-volume
tone at seven-second intervals to alert the operator to install a fully charged
battery. The “battery voltage low tone” continues for two minutes after which
the belt pack turns off automatically to prevent damage to the batteries.
Note
When installing a battery, make sure it is fully charged. It is important to
remember that an unused C860 battery loses five percent of its charge per
week. If a battery has not been used for several weeks, make sure to charge
prior to use.
To replace the battery:
1. Push the battery release to release the battery. See Figure 14.
2. Remove the discharged battery from the belt pack.
3. Insert a fully charged battery in the unit. Make sure the battery is fully
inserted (battery release clicks). See Figure 14.
Note
The C860 can operate on one battery or two. Using two batteries doubles the
operating time between charges.
If two batteries are used, both must be recharged at the same time.
Figure 14.
To replace the headset pad, remove the worn/damaged ear pad from the ear cup
and replace it with a new pad.
Belt Pack
Replacing the Battery
Replacing the Headset
Pad