TM 1-1520-238-T-6
9–417
9–172. CIRCUIT PROTECTION SYSTEM (AC ESSENTIAL BUS 1 – CPG STATION) –
9–172
MAINTENANCE OPERATIONAL CHECK (cont)
Task
Result
w. (AAK) Check for continuity between
(A77)J2-30 and (A97)J2-35.
If continuity does not exist, go to paragraph 9–181.
x. (ABQ) Check for continuity between
(A77):J4-L and J2-35.
If continuity does not exist, go to paragraph 9–184.
y. (AAK) Check for continuity between
(A77):J2-30 and J1-6.
If continuity does not exist, go to paragraph 9–182.
z. (ABQ) Check for continuity between
(A77):J4-L and J1-6.
If continuity does not exist, go to paragraph 9–185.
aa. On CPG circuit breaker panel 1 (fig. 9–161),
reconnect P766, P767, and P769.
ab. On CPG circuit breaker panel 2, check that
LASER (CB4), TADS AC (CB3) and
IHADSS (CB1) circuit breakers are closed.
ac. On pilot ELEC PWR panel (fig. 9–162),
place BATT/EXT PWR switch to EXT PWR.
ad. Check that circuit breakers closed in step
aa. remain closed.
If LASER circuit breaker (CB4 does not stay closed,
go to paragraph 9–186.
If TADS AC circuit breaker (CB3 does not stay
closed, go to paragraph 9–187.
If IHADSS circuit breaker (CB1) does not stay closed,
go to paragraph 9–188.
ae. On pilot ELEC PWR panel, place BATT/EXT
PWR switch to OFF.
af. On CPG circuit breaker panel 2 (fig. 9–163),
detach P761 and P1.
M69-207
TADS AC
LASER
IHADSS
Figure 9–163.
CPG Circuit Breaker Panel 2
