TM 1-1520-238-T-6
Change 1
9–265
9–80.
LANDING/SEARCH LIGHT – MAINTENANCE OPERATIONAL CHECK (cont)
9–80
1. Perform the maintenance operational check as follows:
Task
Result
a. On pilot center circuit breaker panel
(fig. 9–132), check that LT SRCH/LDG
circuit breaker (CB22), LT SRCH/LDG
CONTR circuit breaker (CB80), and LT PRI
circuit breaker (CB39) are closed.
If LT SRCH/LDG circuit breaker (CB22) does not stay
closed, go to paragraph 9–82.
If LT SRCH/LDG CONTR circuit breaker (CB80) does
not stay closed, go to paragraph 9–83.
If LT PRI circuit breaker (CB39) does not stay closed,
go to paragraph 9–113 to troubleshoot pilot
edge-lights.
M69-145
LT PRI
LT SRCH / LDG
LT SRCH / LDG CONTR
Figure 9–132. Pilot Center Circuit Breaker Panel
b. On CPG circuit breaker panel 1 (fig. 9–133),
check that PRI LT circuit breaker (CB14) is
closed.
If PRI LT circuit breaker (CB14) does not stay closed,
go to paragraph 9–132 to troubleshoot CPG
edge-lights.
M69-146
PRI LT
Figure 9–133. CPG Circuit Breaker Panel 1
c. On pilot collective stick (fig. 9–134), set and
hold EXT/RET/L/R switch (S1) to EXT.
Check that landing/search light is extended.
If landing/search light does not extend, go to
paragraph 9–84.
d. On pilot collective stick, set and hold
EXT/RET/L/R switch (S1) to L. Check that
landing/search light rotates to the right 180.
If landing/search light does not rotate to the left 180,
go to paragraph 9–85.
e. On pilot collective stick, set and hold
EXT/RET/L/R switch (S1) to R. Check that
landing/search light rotates to the right 180.
If landing/search light does not rotate to the right
180, go to paragraph 9–86.
