TM 1-1520-238-T-6
9–549
9–263. CIRCUIT PROTECTION SYSTEM (DC EMERGENCY BUS – PILOT STATION) –
9–263
MAINTENANCE OPERATIONAL CHECK(CONT)
Task
Result
k. Attach P1, P5, and P463. Check that all pilot
emergency battery circuit breakers are
closed.
l. On pilot ELEC PWR panel, set BATT/EXT
PWR switch in EXT PWR.
m. Check that all pilot dc emergency bus circuit
breakers (fig. 9–191) remain closed.
If JETT circuit breaker (CB34) does not stay closed,
go to paragraph 9–270.
If ENG WARN circuit breaker (CB52) does not stay
closed, go to paragraph 9–271.
If FUEL APU circuit breaker (CB9) does not stay
closed, go to paragraph 9–272.
If FUEL VLV ACTR circuit breaker (CB14) does not
stay closed, go to paragraph 9–273.
If FIRE EXTGH APU circuit breaker (CB26) does not
stay closed, go to paragraph 9–274.
If FIRE EXTGH CPG circuit breaker (CB15) does not
stay closed, go to paragraph 9–275.
If FIRE EXTGH PLT circuit breaker (CB25) does not
stay closed, go to paragraph 9–276.
If FIRE DETR APU circuit breaker (CB11) does not
stay closed, go to paragraph 9–277.
If FIRE DETR ENG 2 circuit breaker (CB13) does not
stay closed, go to paragraph 9–278.
If FIRE DETR ENG 1 circuit breaker (CB12) does not
stay closed, go to paragraph 9–279.
If ENG INST circuit breaker (CB17) does not stay
closed, go to paragraph 9–280.
If ENG START circuit breaker (CB58) does not stay
closed, go to paragraph 9–281.
If ENG LVR circuit breaker (CB16) does not stay
closed, go to paragraph 9–282.
If FUEL XFEED circuit breaker (CB55) does not stay
closed, go to paragraph 9–283.
If ENG CUT circuit breaker (CB60) does not stay
closed, go to paragraph 9–284.
If THROT circuit breaker (CB8) does not stay closed,
go to paragraph 9–285.
If STBY ATTD circuit breaker (CB19) does not stay
closed, go to paragraph 9–286.
If RDR ALT circuit breaker (CB31) does not stay
closed, go to paragraph 9–287.
