TM 9–2350–311–20–2
3–119
i.
INTERCOMMUNICATION SYSTEM
— CONTINUED
(5)
TELEPHONE OPERATOR CANNOT COMMU-
NICATE.
INITIAL SETUP
Test Equipment
Multimeter (item 6, Appx H)
Tools
Artillery and turret mechanic’s tool kit
(SC 5180–95–CL–A12)
Personnel Required
2
Personnel Required
TM 9–2350–311–20–1
Equipment Condition
Amplifier AM 1780/VRC POWER switch to OFF
(TM 9–2350–311–10)
Vehicle MASTER switch to OFF (TM 9–2350–311–10)
1.
Clean and adjust electrical contact arm assembly
(para 9–3).
2.
Place one multimeter lead in wire L2 and other
lead on terminal L2 of telephone connector on
back of vehicle.
3.
Check for continuity.
Is continuity present?
1.
Disconnect wire L2 at contact arm assembly
quick-disconnect.
2.
Place one multimeter lead in wire L2 and other
lead on terminal L2 of telephone connector on
back of vehicle.
3.
Check for continuity.
Is continuity present?
NOTE
Two personnel are required to perform the
following steps. Steps A through D must be
repeated for each contact arm assembly.
yes
no
A
B
CONTINUED ON NEXT PAGE
Go to step C.
–
+
WIRE L2
TERMINAL L2
CONTACT
ARM
ASSEMBLY