TM 1-1520-238-T-6
9–552
9–263. CIRCUIT PROTECTION SYSTEM (DC EMERGENCY BUS – PILOT STATION) –
9–263
MAINTENANCE OPERATIONAL CHECK(CONT)
Task
Result
ag. On pilot ELEC PWR panel (fig. 9–190), set
BATT/EXT PWR switch to OFF and detach
P463.
ah. On pilot ELEC PWR panel, set BATT/EXT
PWR switch to EXT PWR.
ai. Check for 28 VDC at (A76):
J1-U and J1-W.
If 28 VDC is not present, go to
paragraph 9–290.
aj. Check for 28 VDC at (A76)J1-V.
If 28 VDC is not present, go to
paragraph 9–292.
ak. Check for 28 VDC at (A76)J1-y.
If 28 VDC is not present, go to
paragraph 9–291.
al. Check for 28 VDC at (A76)J1-t.
If 28 VDC is not present, go to
paragraph 9–293.
am. Check for 28 VDC at (A76)J1-n.
If 28 VDC is not present, go to
paragraph 9–294.
an. Check for 28 VDC at (A76)J1-q.
If 28 VDC is not present, go to
paragraph 9–295.
ao. Check for 28 VDC at (A76)J1-s.
If 28 VDC is not present, go to
paragraph 9–296.
ap. Check for 28 VDC at (A76)J1-a.
If 28 VDC is not present, go to
paragraph 9–297.
aq. Check for 28 VDC at (A76)J1-w.
If 28 VDC is not present, go to
paragraph 9–298.
ar. Check for 28 VDC at (A76)J1-p.
If 28 VDC is not present, go to
paragraph 9–299.
as. Check for 28 VDC at (A76)J1-v.
If 28 VDC is not present, go to
paragraph 9–300.
at. Check for 28 VDC at (A76)J1-S.
If 28 VDC is not present, go to
paragraph 9–301.
au. Check for 28 VDC at (A76)J1-r.
If 28 VDC is not present, go to
paragraph 9–302.
av. Check for 28 VDC at P1-2.
If 28 VDC is not present, go to
paragraph 9–303.
aw. Check for 28 VDC at P1-32.
If 28 VDC is not present, go to
paragraph 9–283.
3. On pilot ELEC PWR panel (fig. 9–190), set BATT/EXT PWR switch to OFF.
4. Perform EXTERNAL POWER – POWER DOWN (para 9–46).
