TM 55-1520-240-T9-11.3 OVERHEAD PANEL LIGHTS OPERATIONAL CHECK9-11.3INITIAL SETUPReferences:Applicable Configurations:TM 55-1520-240-23Without 17 and 74Equipment Condition:Tools:TM 55-1520-240-23:NoneBattery ConnectedMaterials:Electrical Power OnNoneHydraulic Power OffPersonnel Required:Overhead Panel Lights Visual Check PerformedAircraft Electrician(Task 9-11.2)TASKRESULT1.Check that LIGHTING OVHD PNL circuit breaker (1) isIf OVHD PNL circuit breaker (1) is open, close it. If itclosed.opens again, go to task 9-11.4.2.Turn OVERHEAD PANEL LIGHTS control (2) fromAll control panels in overhead panel shall light dim andOFF through DIM to BRT.increase in brightness as control (2) is turned to BRT. Ifany panel is not lit, go to task 9-11.5. If panel brightnessdoes 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. Ifnot, replace OVERHEAD PANEL LIGHTS control.FOLLOW-ON MAINTENANCE:TM 55-1520-240-23:Battery DisconnectedElectrical Power OffEND OF TASK9-202 Change 19
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