TM-9-2350-277-20-1

CARRIER M113A3, M577A3, M1059A3, M1064A3, M1068A3 AND M58

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL VOLUME 1 OF 6

TM-9-2350-277-20-1 - Page 263 of 855

TM 9-2350-277-20-1

RIGHT REAR UTILITY OUTLET/ADMITTANCE BUZZER WORKS IMPROPERLY

(M577A3 AND M1068A3 ONLY) — Continued

0042 00

3Y

1.

Turn MASTER SWITCH to OFF.

2.

Faulty rear main wiring harness. Beyond unit maintenance repair.

3.

Notify supervisor.

AY

1.

Remove eight nuts (7), washers (8), and screws (9) from master

switch panel (6). Pull panel away from distribution box (1).

2.

Remove circuit 10 and 37A plugs (2) and (5) from circuit

breaker jacks (3) and (4).

3.

Measure resistance between circuit breaker jacks (3) and (4).

4.

Does multimeter read 0 ohms?

AYN

1.

Replace circuit breaker

(WP 0280 00).

2.

Verify no faults found.

A2Y

1.

Turn MASTER SWITCH to ON.

2.

Measure voltage at circuit 10 plug.

3.

Does multimeter read less than 17 volts?

A2YN

1.

Turn MASTER SWITCH to OFF.

2.

Faulty rear main wiring harness

circuit 37A. Beyond unit

maintenance repair.

3.

Notify supervisor.

004200-2

Change 4