TM 1-1520-238-T-6
9–385
9–150. CIRCUIT PROTECTION SYSTEM (AC ESSENTIAL BUS 1 – PILOT STATION) –
9–150
MAINTENANCE OPERATIONAL CHECK (cont)
Task
Result
j. On pilot ELEC PWR panel (fig. 9–157), set
BATT/EXT PWR switch to OFF.
k. On electrical power distribution box, detach
P2.
l. On pilot ELEC PWR panel, set BATT/EXT
PWR switch to EXT PWR.
m. Check for 115 VAC at:
P2-N,
P2-P,
P2-R.
If 115 VAC is not present, go to paragraph 9–153.
n. Check for 115 VAC at:
P2-F,
P2-G,
P2-H.
If 115 VAC is not present, go to paragraph 9–161.
o. Check for 115 VAC at:
P2-p,
P2-n,
P2-m.
If 115 VAC is not present, go to paragraph 9–166.
p. Check for 115 VAC at:
P2-q,
P2-r,
P2-s.
If 115 VAC is not present, go to paragraph 9–171.
q. On pilot ELEC PWR panel, set BATT/EXT
PWR switch to OFF.
r. On electrical power distribution box, attach
P2 and detach P1.
s. On pilot ELEC PWR panel, set BATT/EXT
PWR switch to EXT PWR.
t. Check for 115 VAC at:
P1-5,
P1-6,
P1-7.
If 115 VAC is not present, go to paragraph 9–155.
u. Check for 115 VAC at:
P1-11,
P1-12,
P1-13.
If 115 VAC is not present, go to paragraph 9–154.
v. Check for 115 VAC at:
P1-38,
P1-39,
P1-40.
If 115 VAC is not present, go to paragraph 9–159.
w. Check for 115 VAC at P1-52.
If 115 VAC is not present, go to paragraph 9–156.
