TM 1-1520-238-T-5
8165
891.
FLIGHT INSTRUMENTS MAINTENANCE OPERATIONAL CHECK (cont)
891
Task
Result
d. On pilot ELEC PWR panel (fig. 842), set
BATT/EXT PWR switch to EXT PWR.
BATT/EXT PWR
SWITCH
M68-046
Figure 842.
Pilot ELEC PWR Panel
e. On CPG circuit breaker panel 1 (fig. 843),
check that PRI LT circuit breaker located is
closed.
PRI LT
M68-047
Figure 843.
CPG Circuit Breaker Panel 1
f. On CPG INTR LT panel (fig. 844), turn
INST control to BRT.
If CPG airspeed indicator, VSI, and barometric
altimeter (fig. 845) edgelights do not light, refer to
TM 1-1520-238-T-6 to troubleshoot CPG edgelights.
If CPG airspeed indicator edgelighting does not light,
go to paragraph 893.
If CPG VSI edgelighting does not light, go to
paragraph 894.
If CPG barometric altimeter edgelighting does not
light, go to paragraph 895.