TM 9-2350-277-20-1
RIGHT REAR UTILITY OUTLET/ADMITTANCE BUZZER WORKS IMPROPERLY (M577A3
AND M1068A3 ONLY)—Continued
0042 00
A3Y
1. Turn MASTER SWITCH to OFF.
2. Replace circuit 10 in master switch panel from the bus bar to the
circuit breaker (WP 0382 00).
3. Verify no faults found.
BY
1. Remove circuit 509 plug (1) from admittance buzzer jack (2).
2. (H): Depress admittance buzzer switch.
3. Measure voltage between circuit 509 plug (1) and ground.
4. Does multimeter read less than 17 volts?
YES
NO
BYN
1. Turn MASTER SWITCH to OFF.
2. Replace admittance buzzer
(WP 0334 00).
3. Verify no faults found.
B2Y
1. Remove rear main harness circuit 509 plug (1) from admittance
buzzer switch (2).
2. Install a jumper wire between admittance buzzer circuit 509 plug
(1) and ground.
3. Measure voltage across two pin contacts of circuit 509 plug (1)
from admittance buzzer switch.
4. Does multimeter read less than 17 volts?
YES
NO
B2YN
1. Turn MASTER SWITCH to OFF.
2. Replace admittance buzzer switch
(WP 0334 00).
3. Verify no faults found.
0042 00-3
