TM 1-1520-238-T-6
9–646
Change 4
9–333. PILOT CAUTION AND WARNING SYSTEM – MAINTENANCE OPERATIONAL
9–333
CHECK (cont)
1. Perform the maintenance operational check as follows:
Task
Result
a. On pilot center circuit breaker panel
(fig. 9–213), check that LT CAUT circuit
breaker (CB21) is closed.
If LT CAUT circuit breaker (CB21) does not stay
closed, go to paragraph 9–335.
b. On pilot EXT LT/INTR LT panel (fig. 9–213),
place INST control to BRT.
If pilot caution/warning edge–lighted panel is not
lighted, go to paragraph 9–336A.
M69-304
INST CONTROL
LT CAUT
Figure 9–213.
Pilot Center Circuit Breaker and EXT LT/INTR LT Panels
c. On pilot master caution/warning panel
(fig. 9–214), check that PRESS TO TEST
indicator is lighted.
If PRESS TO TEST indicator is not lighted, replace
lamp (TM 1-1520-238-23). If lamp still does not light,
go to paragraph 9–336.
MASTER
CAUTION
INDICATOR
LOW RPM
ROTOR
INDICATOR
APU FIRE
INDICATOR
ENGINE 1
OUT
INDICATOR
ENGINE
CHOP
INDICATOR
ENGINE 2
OUT
INDICATOR
HIGH RPM
INDICATOR
BUCS
FAIL
INDICATOR
PRESS
TO TEST
INDICATOR
M69-305
Figure 9–214.
Pilot Master Caution/Warning Panel
