Focusing Knob

(1) When switch S1 is at OFF, power is disconnected from

projection lamp DS1 and blower motor 131.

(2) When switch S1 is at FAN ONLY, blower motor B1 is

energized.

(3) When switch S1 is at ON, projection lamp DS1 and

blower motor B1 are energized.

b. Focusing Knob. The focusing knob (1) is at the end of the

pinion shaft (16 ) on the right side of the projector. It moves the

lens tube (19) in and out of the projector to permit focusing of

the image on a projection screen.

c. Pointer Knob. The pointer knob (15) is on the side of the

housing above the OFF-FAN ONLY-ON switch (14). It posi-

tions the arrow image on the illuminated projection screen.

d. Handcrank. The handcrank (13) is on the right side of the

undercarriage (11). It rotates a perforated belt, moving copy

into position under the aperture for projection and out of the

projector after projection.

e. Undercarriage Control Lever. The undercarriage control

lever (18) is at the rear of the projector below the undercarriage

(11). It raises or lowers the undercarriage.

f. Elevating Legs. The two elevating legs (9) are mounted

inside the front of the projector housing. They raise or lower the

projected image on the projection screen. When the image is in

the desired position, the elevating legs are clamped with the leg

clamp screws (8).