the pointer mirror about a vertical axis and swings the image left
or right. Rotating the control knob about its own shaft pivots the
pointer mirror about a horizontal axis, thus moving the image up or
down.
39. Ventilation
A ventilation system consisting of a motor, a fan, and a vacuum
box, provides cooling for the projection lamp, the copy, and the hous-
ing. It also provides a vacuum for holding copy on the copy feeding
unit. The motor and fan are mounted in the undercarriage assembly
and located under the projection lamp.
40. Power Some (fig. 9)
The projector operates from 115-volt, 60 cycle ac power source. On
the front of the projector are a two-way ON-OFF switch, two fuse
holder mounted fuses, and a male receptacle connector for the power
cable.
EI
PROJECTION LAMP
FI
FUSE, IO AMPS
BI
FAN MOTOR
MALE RECEPTACLE
JI
SI
ON-OFF SWITCH
TM 2330A-9
Figure 9. Schematic diagram.
30
