TM 55-1520-240-T
9-9.3
CENTER FLIGHT INSTRUMENT PANEL LIGHTS OPERATIONAL CHECK
9-9.3
INITIAL SETUP
References:
Applicable Configurations:
TM 55-1520-240-23
Without 17 or 74
Equipment Condition:
Tools:
TM 55-1520-240-23:
None
Battery Connected
Materials:
Electrical Power On
None
Hydraulic Power Off
Personnel Required:
Center Flight Instrument Panel Lights Visual
Check
Aircraft Electrician
Performed (Task 9-9.2)
TASK
RESULT
1.
Check that LIGHTING CTR INSTR circuit breaker (1) is
If CTR INSTR circuit breaker (1) is open, close it. If it
closed.
opens again, go to task 9-9.4.
2.
Turn CTR INST lights control (2) from OFF through
All 16 instrument panel lights (3), fuel flow indicator (4)
DIM to BRT.
internal lights, fire emergency panel (5) lights, and caution
lights/vhf antenna select panel (6) lights shall come on
dim and increase in brightness as control (2) is turned to
BRT. If any light is not lit, go to task 9-9.5. If brightness
does not increase, replace CTR SECT INST LTS control.
3.
Turn CTR SECT INST LTS control (2) to OFF.
All center flight instrument panel lights shall go out. If not,
replace CTR SECT INST LTS control.
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Battery Disconnected
Electrical Power Off
END OF TASK
9-182 Change 19
