TM 55-1520-240-T9-9.3CENTER FLIGHT INSTRUMENT PANEL LIGHTS OPERATIONAL CHECK9-9.3INITIAL SETUPReferences:ApplicableConfigurations:TM 55-1520-240-23Without 17 or 74Equipment Condition:Tools:TM 55-1520-240-23:NoneBattery ConnectedMaterials:Electrical Power OnNoneHydraulic Power OffPersonnel Required:Center Flight Instrument Panel Lights VisualCheckAircraft ElectricianPerformed (Task 9-9.2)TASKRESULT1.Check that LIGHTING CTR INSTR circuit breaker (1)isIf CTR INSTR circuit breaker (1) is open, close it. If itclosed.opens again, go to task 9-9.4.2.Turn CTR INST lights control (2) from OFF throughAll 16 instrument panel lights (3), fuel flow indicator (4)DIM to BRT.internal lights, fire emergency panel (5) lights, and cautionlights/vhf antenna select panel (6) lights shall come ondim and increase in brightness as control (2) is turned toBRT. If any light is not lit, go to task 9-9.5. If brightnessdoes 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 DisconnectedElectrical Power OffEND OF TASK9-182 Change 19
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