Optical Pointer Assembly, Projector, Still Picture AP-5(2)

Page 30.

38.1. Optical Pointer Assembly, Projector, Still Picture AP-5(2)

(fig. 16.1)

(Added)

The optical pointer assembly includes an aperture plate that

contains the arrow, lens tube, condenser lens, projection lens, a

rear surface mirror, and a front surface mirror. The rear sur-

face mirror collects the light and reflects it into the lens tube. The

light passes through the aperture plate that contains the arrow,

through the condenser lens and projection lens, and strikes the

front surface mirror. The light reflected from the front surface

mirror is directed onto a projection screen. The projected arrow

image is controlled by operating the pointer knob, which moves

the front surface mirror. Pushing the pointer knob in or pulling

it out moves the front surface mirror on a vertical axis and moves

the arrow image left or right. Rotating the pointer knob about

its own shaft moves the front surface mirror on a horizontal axis

and moves the arrow image up or down.

39.1. ventilation, Projector, still Picture AP-5(2)

(figs. 8.1 and 10.1)

(Added)

The blower assembly (fig. 10.1 ) contains two separate blower

wheels driven by a common motor and provides the necessary

ventilation for the projector. Both blowers produce a vacuum to

hold the copy being projected, but only the blower on the right

side of the projector (viewed from the rear) provides cooling air

for the projection lamp and projector housing (fig. 8.1).

40.1. Power Source

(fig. 9.1)

(Added)

The projector operates from 115-volt, 60-cps power source.

Three-position rotary switch S1 (OFF-FAN ONLY-ON) controls

the power to blower motor B1 and projector lamp DS1. The cir-

cuit contains 15-ampere fuses F1 and F2, which fuse both sides of

the powerline. Power is applied to the equipment through ground

adapter P1 (used for grounding the equipment), connector J1,

and cable W1.

AGO 5802B