TM 55-1520-240-T
16-3.24 OVERHEAD PANEL LIGHTS OPERATIONAL CHECK
16-3.24
INITIAL SETUP
Applicable Configurations:
Helicopters with Engine Air
Particle Separator Provisions
TOOls:
None
Materials:
None
Personnel Required:
Aircraft Electrician
References:
TM 55-1520-240-23
TM 55-1520-240-T
Equipment Condition:
TM 55-1520-240-23:
Battery Connected
Electrical Power On
Hydraulic Power Off
Overhead Panel Lights Visual Check Performed
Refer to Task 9-1.7 (TM 55-1520-240-T)
TASK
RESULT
1.
Check that LIGHTING OVHD PNL circuit breaker
If OVHD PNL circuit breaker (1) is open, close it. If it
(1) is closed.
opens again, go to TM 55-1520-240-T, task 9-11,9.
2. Turn OVHD CSL lights control (2) from OFF
All control panels in overhead panel shall light dim
through DIM to BRT.
and increase in brightness as control (2) is turned to
BRT. If any panel is not lit, go to task 9-11.10. If panel
brightness does not increase as control is turned, re-
place OVHD CSL lights control.
3. Turn OVHD CSL lights control (2) to OFF.
All control panel lights in overhead panel shall go out.
If not, replace OVHD CSL lights control.
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Battery Disconnected
Electrical Power Off
16-141
