TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 DOME LIGHT MALFUNCTION (M577A3 ONLY)—Continued 0040 00 BY 1. Turn MASTER SWITCH to OFF. 2. Remove eight nuts (1), washers (2), an screws (3) from master switch panel (4). Pull panel away from distribution box (5). 3. Remove circuit 10 plugs from circuit breaker jacks (7). 4. Measure resistance between circuit breaker jacks (7). 5. Does multimeter read 0 ohm? YES NO BYN 1. Replace circuit breaker (WP 0316 00). 2. Verify no fats found. B2Y 1. Repair circuit 10 lead assembly from the circuit breaker to the front dome light switch (WP 0382 00). 2. Verify no faults found. CY 1. Has the ramp door switch been adjusted? YES NO CYN 1. Adjust ramp door switch (WP 0335 00). 2. Verify no faults found. C2Y 1. Replace ramp door switch (WP 0335 00). 2. Verify no faults found. 0040 00-4