TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–120 3–3 TROUBLESHOOTING — CONTINUED i. INTERCOMMUNICATION SYSTEM — CONTINUED (5) TELEPHONE OPERATOR CANNOT COMMU- NICATE. — CONTINUED Repair or replace wire L1 from telephone terminal to contact arm assembly con- nector (TM 9–2350–311– 20–1). 1. Clean and adjust electrical contact holder and brushes (para 9–3). 2. Place one multimeter lead in wire L1 and other lead on terminal L1 of telephone connector on back of vehicle. 3. Check for continuity. Is continuity present? CONTINUED FROM STEP A OR B 1. Connect wire L2 at contact arm assembly quick-disconnect. 2. Disconnect wire L1 at contact arm assembly quick-disconnect. 3. Place one multimeter lead in wire L1 and other lead on terminal L1 of telephone connector on back of vehicle. 4. Check for continuity. Is continuity present? yes no yes no C Go to step E. yes no CONTINUED ON NEXT PAGE D + – WIRE L1 TERMINAL L1 Repair or replace wire L2 from telephone terminal to contact arm assembly connector (TM 9–2350–311– 20–1).