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 458 of 855

TM 9-2350-277-20-1

POWER CONTROL ENCLOSURE A1 DC INPUT/OUTPUT INOPERATIVE (M1068A3

ONLY)—Continued

0090 00

A5Y

1.

Have helper depress DC TO INVERTERS button (1) on Power

Control Enclosure panel.

2.

Measure voltage between terminal 1 (2) of circuit breaker CB2

(3) and ground.

3.

Repeat measurement between terminal 2 (4) and ground.

4.

Does multimeter read 22 volts DC or more for both

measurements?

YES

NO

A5YN

1.

Replace circuit breaker CB2

(WP 0828 00).

2.

Verify no faults found.

0090 00-9