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tem has NVG information panel lighting to make those instruments compatible with the NVG system. Power to operate the instrument lights is provided by the No. 2 ac primary bus through circuit breakers marked LIGHTS PLT FLT and LIGHTS NON FLT, and No. 1 ac primary bus, through a circuit breaker marked LIGHTS CPLT FLT.
2.64.4 Lighted Switches Dimmer. A dimmer control labeled LIGHTED SWITCHES (Figure 2-6) is provided on the upper console to reduce illumination level of the following panel lighted switches: Pilot and copilot MODE SEL, TAILWHEEL LOCK, CIS MODE SEL,AUTO FLT CONT and NO. 1 and NO. 2 FUEL BOOST PUMP on lights.
2.64.5 Upper and Lower Console Lights. NVG lights for the upper console, cockpit .ood secondary lights, engine control quadrant, .ight control panel, miscellaneous switch panel, boost pump control panel, ESSS related pan-els, range extension fuel management panel, rescue hoist panel, and compass are illuminated from the No. 1 ac pri-mary bus through dimmer controls marked CONSOLE LT UPPER and LOWER. Circuits are protected by circuit breakers marked LIGHTS UPPER CSL and LIGHTS LWR CSL. All other lower console panels are illuminated by the lower console auxiliary utility light next to the co-pilot’s seat.
2.64.6 Utility Lights. All utility lights are dual (blue/ green-white) (Figure 2-4). One portable cockpit utility light with coiled cord is attached to the upper console by remov-able brackets, on the pilot’s side of the console. The light may be adjusted on it’s mounting to direct the light beam or it may be removed and used portably. The utility light is controlled by a rheostat or a pushbutton on the end of the casting. The lens casting of the light may be turned to change from white to blue/green and/or spot to .ood. The copilot’s utility light, located at the right rear of the copi-lot’s seat, is used to illuminate some panels on the lower console for night .ight. A transition equipment bay utility light is installed on the bay shelf to provide bay lighting. All utility lights operate in the same manner as above. The utility lights operate from the battery bus through a circuit breaker marked UTIL BUS DC SPLY.
2.64.7 Cabin Dome Lights. One dome light is pro-vided for cabin lighting (Figure 2-5). Control of cabin lights is from the upper console by a control marked CABIN DOME LT (Figure 2-6). The light color selector switch has marked positions WHITE, OFF, and BLUE. To place the switch from OFF to WHITE, the switch must .rst be pulled out to clear a detent. This prevents accidentally plac-
2-64 Change 1
ing the switch to WHITE. The cabin lighting is enabled through the CABIN DOME LT switch. The side medical lights only operate when the CABIN DOME LT switch is in the WHITE position. The ceiling medical lights operate when the CABIN DOME LT switch is in the WHITE or BLUE position. For a complete description of the cabin lighting refer to Chapter 4. Dimming control for the cabin dome light is from a control on the left side of the pilots seat (Figure 2-4), marked CABIN DOME LT, with marked positions OFF and BRT. Power to operate the cabin dome light system is provided from the No. 1 ac primary bus through a circuit breaker marked LIGHTS CABIN DOME.
2.64.8 Maintenance Light. A portable 20 watt .ood-light, in the cabin is used by the crew for maintenance work. The light has a 20-foot cord, allowing its use within the cabin and around the main transmission. A switch on the rear end of the light with marked positions, DIM, OFF, and BRIGHT, controls the light intensity. Another mainte-nance light receptacle, in the aft tailcone, allows the light to be used around the tail section. Power to operate the light is from the battery bus through a circuit breaker marked UTIL BUS DC SPLY. The maintenance light is stowed in a bag at the back of the pilot’s seat. Power to operate the main-tenance lights is provided from the battery bus through a circuit breaker, marked UTIL BUS DC SPLY. Make sure the maintenance and cockpit utility lights are OFF when not in use.
　
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