•
To provide compatibility with the C5000 intercom, replace the existing capacitor and resistor
connected from handset terminals 6B to 5B with a 10 micro Farad 50V electrolytic capacitor and a
20 k Ohm ¼ watt resistor as shown below.
3
Food Services Trade Department
3M Center, Building 551-1E-02
St. Paul, MN 55144-1000
© 3M Co. January 1998
19980122 Rev B
External Speaker
and Call Switch
(if used)
Heavy Duty Security Handset Reliability Improvement
wiring diagram
Enlarge lower hole in right side of the
metal plate, and place nut and screw here
S1
1998 3M Company
Handset (side view)
c
A 6 B
A 8 B
A 7 B
A 10 B
A 9 B
1k
Handset
Cradle Switch
B 5 A
B 3 A
B 4 A
B 1 A
B 2 A
S2
S2
S2
S3
Intercom Audio
twisted pair
20k
10.0
+
WHT
BLK
Summary of Contents for C860
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