OVERHEAD PANEL LIGHTS OPERATIONAL CHECK

DC POWER SYSTEM WIRING DIAGRAM - TM-55-1520-240-T-3_968

TM-55-1520-240-T-3 CH-47D Heilcopter Manual
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TM 55-1520-240-T 16-3.24 OVERHEAD PANEL LIGHTS OPERATIONAL CHECK 16-3.24 INITIAL SETUP Applicable Configurations: Helicopters with Engine Air Particle Separator Provisions TOOls: None Materials: None Personnel Required: Aircraft Electrician References: TM 55-1520-240-23 TM 55-1520-240-T Equipment Condition: TM 55-1520-240-23: Battery Connected Electrical Power On Hydraulic Power Off Overhead Panel Lights Visual Check Performed Refer to Task 9-1.7 (TM 55-1520-240-T) TASK RESULT 1. Check that LIGHTING OVHD PNL circuit breaker If OVHD PNL circuit breaker (1) is open, close it. If it (1) is closed. opens again, go to TM 55-1520-240-T, task 9-11,9. 2. Turn OVHD CSL lights control (2) from OFF All control panels in overhead panel shall light dim through DIM to BRT. and 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, re- place 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 16-141

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