TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–103 i. INTERCOMMUNICATION SYSTEM — CONTINUED (1) INTERCOMMUNICATION SYSTEM WILL NOT OPERATE. INITIAL SETUP Test Equipment Lead set, test (item 5, Appx H) Multimeter (item 6, Appx H) Tools Artillery and turret mechanic’s tool kit (SC 5180–95–CL–A12) Equipment Condition Vehicle MASTER switch to OFF (TM 9–2350–311–10) Repair or replace bus bar in power relay box assem- bly from wire 100 to wire 148 (para 8–13). yes no A yes no CONTINUED ON NEXT PAGE B Repair or replace wire 100 (para 8–4). 1. Disconnect wire 100 from power relay box assembly. 2. Turn MASTER switch to ON. 3. Place red multimeter lead in connector and black lead to ground. 4. Check for voltage. Is battery voltage present? + – WIRE 100 POWER RELAY BOX ASSEMBLY WIRE 148 1. Turn MASTER switch to OFF. 2. Reconnect wire 100 at power relay box assembly. 3. Disconnect wire 148 at power relay box assembly. 4. Turn MASTER switch to ON. 5. Place red multimeter lead in power relay box assembly terminal and black lead to ground. 6. Check for voltage. Is battery voltage present? POWER RELAY BOX ASSEMBLY WIRE 100 – +