TM 55-1520-240-T
9-11.3 OVERHEAD PANEL LIGHTS OPERATIONAL CHECK
9-11.3
INITIAL SETUP
References:
Applicable Configurations:
TM 55-1520-240-23
Without 17 and 74
Equipment Condition:
Tools:
TM 55-1520-240-23:
None
Battery Connected
Materials:
Electrical Power On
None
Hydraulic Power Off
Personnel Required:
Overhead Panel Lights Visual Check Performed
Aircraft Electrician
(Task 9-11.2)
TASK
RESULT
1.
Check that LIGHTING OVHD PNL circuit breaker (1) is
If OVHD PNL circuit breaker (1) is open, close it. If it
closed.
opens again, go to task 9-11.4.
2.
Turn OVERHEAD PANEL LIGHTS control (2) from
All control panels in overhead panel shall light dim and
OFF through DIM to BRT.
increase in brightness as control (2) is turned to BRT. If
any panel is not lit, go to task 9-11.5. If panel brightness
does not increase as control is turned, replace OVER-
HEAD PANEL LIGHTS control.
3.
Turn OVERHEAD PANEL LIGHTS control (2) to OFF.
All control panel lights in overhead panel shall go out. If
not, replace OVERHEAD PANEL LIGHTS control.
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Battery Disconnected
Electrical Power Off
END OF TASK
9-202 Change 19
