TM 55-1520-240-T
17-1.3 EMERGENCY EXIT LIGHTS OPERATIONAL CHECK (Continued)
17-1.3
TASK
RESULT
1.
2.
3.
4.
5.
Set EMER EXIT LTS or EMER EXIT
switch (1) to DISARM.
Connect battery. Refer to TM 55-1520-240-
23.
Without check CABIN & RAMP lighting
circuit breaker (2).
With check EMER EXIT lighting circuit
breaker (2. 1).
Check emergency exit lights (3, 4, and 5).
6. Set EMER EXIT LTS or EMER EXIT
switch (1) to ARM.
7. Set EMER EXIT LTS or EMER EXIT
switch (1) to TEST.
8. Set EMER EXIT LTS or EMER EXIT
switch (1) to ARM.
NOTE
Leave EMER EXIT LTS switch at ARM
for 10 minutes before doing next step.
EMER EXIT LTS or EMER EXIT
switch must be at DISARM when
electrical power is removed. If
switch is in ARM and battery
switch is turned off, exit lights
will come on and discharge inter-
nal batteries.
If breaker (2) is open, close it. If it opens again, go
to task 9-15.4.
If breaker (2.1) is open, close it. If it opens again, go
to task 17-1.8.
Main lamps on emergency exit lights (3, 4, and 5)
shall be out. If not go to task 17-1.4. Charge indica-
tor lamps on emergency exit lights (3, 4, and 5) shall
be on. If not, go to task 17-1.8.
Charge indicator lamps shall come on and main
lamps shall be off at each emergency exit light (3, 4,
and 5). If charge indicator lamps are not on, go to
task 17-1.5. If main lamps are on, go to task 17-
1.6.
Main lamps shall come on and charge indicator
lamps shall be off at each emergency exit light (3, 4,
5). If main lamps do not come on, go to task 17-
1.7. If charge indicator lamps do not go out, replace
EMER EXIT LTS or EMER EXIT switch.
Main lamps on emergency exit lights (3, 4, and 5)
shall go out. If not, go to task 17-1.4. Charge indica-
tor lamps on emergency exit lights (3, 4, and 5) shall
be on. If not go to task 17-1.5.
TASK
RESULT
9. Set EMER EXIT LTS or EMER EXIT switch (1) to
Main lamps on emergency exit lights (3, 4, and 5)
DISARM.
shall go out If not, go to task 17-1.4. Charge indica-
tor lamps on emergency exit lights (3, 4, and 5) shall
be on. If not, go to task 17-1.8.
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Battery Disconnected
END OF TASK
Change 3
17-5
