TM 1-1520-238-T-6
9–465
9–206. CIRCUIT PROTECTION SYSTEM (DC ESSENTIAL BUS 1 – PILOT STATION) –
9–206
MAINTENANCE OPERATIONAL CHECK (cont)
M69–218
ECS WSHLD
WPR
ECS CANOPY
ANTI–ICE CONTR
STAB MAN DC
ECS ENG
ANTI–ICE
POWER BATT
CHGR DC
CBR BLWR
Figure 9–173.
Pilot Aft Circuit Breaker Panel
Task
Result
i. Check that circuit breakers closed in step g.
remain closed.
If STAB MAN DC circuit breaker (CB6) does not stay
closed, go to paragraph 9–209.
If ECS CANOPY ANTI-ICE CONTR circuit breaker
(CB70) does not stay closed, go to paragraph 9–210.
If ECS WSHLD WPR circuit breaker (CB71) does not
stay closed, go to paragraph 9–211.
If ECS ENG ANTI-ICE circuit breaker (CB67) does
not stay closed, go to paragraph 9–212.
If POWER BATT CHGR DC circuit breaker (CB5)
does not stay closed, go to paragraph 9–213.
If CBR BLWR circuit breaker (CB94) does not stay
closed, go to paragraph 9–214.
j. On pilot ELEC PWR panel (fig. 9–172), set
BATT/EXT PWR switch to OFF.
k. On electrical power distribution box, detach
P1 and P2.
l. On pilot ELEC PWR panel, set BATT/EXT
PWR switch to EXT PWR.
m. Check for 28 VDC at P2-g.
If 28 VDC is not present, go to paragraph 9–209.
n. Check for 28 VDC at P1-3.
If 28 VDC is not present, go to paragraph 9–210.
o. Check for 28 VDC at P2-b.
If 28 VDC is not present, go to paragraph 9–211.
p. Check for 28 VDC at P1-4.
If 28 VDC is not present, go to paragraph 9–212.
