TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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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