TM 55-1520-240-T
9-11.8 OVERHEAD PANEL LIGHTS OPERATIONAL CHECK
9-11.8
INITIAL SETUP
References:
Applicable Configurations:
TM 55-1520-240-23.
With 17
Equipment Condition:
Tools:
TM 55-1520-240-23:
None
Battery Connected
Materials:
Electrical Power On
None
Hydraulic Power Off
Overhead Panel Lights Visual Check Performed
Personnel Required:
(Task 9-11.7)
Aircraft Electrician
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 9-11.9.
2.
Turn OVHD CSL lights control (2) from OFF through
All control panels in overhead panel shall light dim and
DIM to BRT.
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, replace 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
END OF TASK
9-212.2 Change 19
