TM 1-1520-238-T-6
9–749
9–395. AUDIO WARNING SYSTEM – MAINTENANCE OPERATIONAL CHECK (cont)
9–395
CENTER
AFT
M69-339
ENG WARN
COMM ICS
STAB MAN AC
STAB MAN DC
STAB AUTO DC
STAB AUTO AC
Figure 9–239.
Pilot Circuit Breaker Panels
Task
Result
b. On CPG circuit breaker panel 1 (fig. 9–240),
check that EMERG BATT ICS circuit
breaker (CB13) is closed.
If EMERG BATT ICS circuit breaker (CB13) does not
stay closed, refer to TM 11-1520-238-23-2 to
troubleshoot intercommunication system.
M69-340
EMERG BATT ICS
Figure 9–240.
CPG Circuit Breaker Panel 1
c. On pilot ELEC PWR panel (fig. 9–241), set
BATT/EXT PWR switch to OFF and back to
EXT PWR. Check that audio warning is
heard in pilot and CPG headsets.
If audio warning is not heard in both headsets, go to
paragraph 9–398.
If audio warning is heard in one but not the other
headset, refer to TM 11-1520-238-23-2 to
troubleshoot integrated audio warning system.
