TM 55-1520-240-T
9-15.3 CABIN AND RAMP LIGHTS OPERATIONAL CHECK
9 - 1 5 .3
INITIAL SETUP
References:
Applicable Configurations:
Tools:
None
Materials:
None
Personnel Required:
Aircraft Electrician
TM 55-1520-240-23
Equipment Condition:
TM 55-1520-240-23:
Battery Connected
Electrical Power On
Hydraulic Power Off
Visual Check of Cabin and Ramp Lights Performed
(Task 9-15.2)
TASK
RESULT
1.
2.
3.
4.
5.
6.
7.
8.
Check that LIGHTING CABIN & RAMP cir-
cuit breaker (1) is closed.
Press and release CAB & RAMP LT WHT
ON pushbutton (2).
Momentarily set CAB & RAMP LT switch
(3) to ALL OFF.
Momentarily set CAB & RAMP LT switch
(3) to RED ON.
Press and release CAB & RAMP LT WHT
ON pushbutton (2).
Momentarily set CABIN
switch (4) to ALL OFF.
Momentarily set CABIN
& RAMP LIGHTS
& RAMP LIGHTS
switch (4) to RED ON.
Momentarily set CABIN & RAMP LIGHTS
switch (4) to ALL OFF.
If CABIN & RAMP circuit breaker (1) is open, close it.
If it opens again, go to task 9-15.4.
All five dome white lights shall come on. If any light
is not lit, go to task 9-15.5.
All dome white lights shall go out. If lights do not go
out, go to task 9-15.6.
All five dome red lights shall come on. If any light is
not lit, go to task 9-15.7.
All dome red lights shall go out and all dome white
lights shall come on. If both red and white dome
lights are lit, locate and repair shorted wiring be-
tween WHT ON switch (2) and cabin red light relay.
All dome white lights shall go out. If lights do not go
out, go to task 9-15.8.
All dome red lights shall come on. If lights are not
lit, go to task 9-15.9.
All dome red lights shall go out. If lights do not go
out, go to task 9-15.8.
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Battery Disconnected
Electrical Power Off
9-262/(9-263 blank)
Change 2
