TM 55-1520-240-T
9-16.3 TROOP WARNING SYSTEM OPERATIONAL CHECK (Continued)
9-16.3
TASK
RESULT
TASK
RESULT
1.
2.
3.
3.1.
4.
4.1.
5.
6.
7.
8.
9.
10.
Check that TROOP ALARM BELL circuit
breaker (1) is closed.
Check that TROOP ALARM JUMP LT cir-
cuit breaker (2) is closed.
Without , check that red dome lights in
cabin and ramp area are not on. If red
dome lights are on, momentarily set the CAB &
RAMP LTS switch (3) to ALL/OFF.
With , check that red dome lights in cab-
in and ramp area are not on. If red dome
lights are on, set CABIN AND RAMP
LIGHTS CONTROL switch (3.1) to OFF.
Without , check that lights in master
caution panel (4) are bright. If not, set
master caution DIM/BRIGHT switch to
BRIGHT.
With , set PLT INST lights control (4.1)
to OFF.
Press and release RED TROOP JUMP LTS
light (6),
Press and release GREEN TROOP JUMP
LTS light (7).
Set TROOP JUMP LTS switch (8) to RED.
Without , momentarily set CAB & RAMP
LTS switch (3) to RED ON. With , set
CABIN AND RAMP LIGHTS CONTROL
switch (3.1) to RED.
Without , momentarily set CAB & RAMP
LTS switch (3) to ALL OFF. With , set
CABIN AND RAMP LIGHTS CONTROL
switch (3.1) to OFF.
Without , momentarily set CAUTION
LIGHTS BRIGHT-DIM switch (5) to DIM.
If circuit breaker is open, close it. If it opens again,
go to task 9-16.4.
If circuit breaker is open, close it. If it opens again,
go to task 9-16.5.
If red lights remain on, go to task 9-15.3.
If lights do not come on bright, go to task 9-18.3
Light (6) shall momentarily come on red. If not, go to
task 9-16.6.
Light (7) shall momentarily come on green. If not, go
to task 9-16.7.
Red lights on forward and aft troop warning boxes
(9 and 10) and red TROOP JUMP LTS light (6) shall
come on bright. If not, go to task 9-16.8. With ,
if red lights come on dim, replace PLT INST lights
control (4.1).
Red lights on forward and aft troop warning boxes
(9 and 10) shall change from bright to dim. If not, go
to task 9-16.9.
Red lights on forward and aft troop warning boxes
(9 and 10) shall change from dim to bright. If not,
replace jump light relay.
Red TROOP JUMP LTS light (6) shall change from
bright to dim, If not, go to task 9-16.10.
10.1.
11.
11.1.
12.
13.
14.
15.
16.
17.
18.
19.
With , set PLT INST lights control (4.1)
to D I M .
Without , momentarily set CAUTION
LIGHTS BRIGHT-DIM switch (5) to
BRIGHT.
With , set PLT INST lights control (4.1)
to OFF.
Set TROOP JUMP LTS switch (8) to
GREEN.
Without , momentarily set CAB & RAMP
LTS switch (3) to RED ON. With , s et
CABIN AND RAMP LIGHTS CONTROL
switch (3.1) to RED.
Without , momentarily set CAB & RAMP
LTS switch (3) to ALL OFF. With , s et
CABIN AND RAMP LIGHTS CONTROL
switch (3.1) to OFF.
Without , momentarily set CAUTION
LIGHTS BRIGHT-DIM switch (4) to DIM.
With , set PLT INST lights control (4.1)
to D I M .
Without , momentarily set CAUTION
LIGHTS BRIGHT-DIM switch (4) t o
BRIGHT. With , set PLT INST lights
control (4.1) to OFF.
Set TROOP JUMP LTS switch (8) to OFF.
Set TROOP ALARM switch (11) to O N .
Set TROOP ALARM switch (11) to OFF.
Red TROOP JUMP LTS light (6) shall change from
bright to dim. If not, go to task 9-16.15.
Red TROOP JUMP LTS light (6) shall change from
dim to bright. If not, replace troop light dimming re-
lay.
Red TROOP JUMP LTS light (6) shall change from
dim to bright. If not, replace troop light dimming re-
l a y .
Red lights on forward and aft troop warning boxes
(9 and 10) shall go out and green lights shall come
on bright. Green TROOP JUMP LTS light (7) shall
come on bright. If red lights are still on and green
lights are out, go to task 9-16.11.
Green lights on forward and aft troop warning boxes
(9 and 10) shall change from bright to dim, If not, go
to task 9-16.12.
Green lights on forward and aft troop warning boxes
(9 and 10) shall change from dim to bright. If not,
replace jump light relay.
Green TROOP JUMP LTS light (7) shall change from
bright to dim. If not, go to task 9-16.13.
Green TROOP JUMP LTS light (7) shall change from
dim to bright. If not, replace troop light dimming re-
lay.
Green lights on both troop warning boxes (9 and 10)
and green TROOP JUMP LTS light (7) shall go out. If
not, replace TROOP JUMP LTS switch (8).
Alarm bells on the forward and aft troop warning
boxes (9 and 10) shall sound. If not, go to task 9-
16.14.
Both alarm bells shall stop.
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Battery disconnected.
Electrical power off.
Hydraulic power off.
END OF TASK
Change 6
9-283