218 Selecting Projection Lens Set and Determining Variable Condenser Lens
Use the chart (a below) to select the projection lens set and to
determine the variable condenser lens position; if necessary, change the
projection lens set (b below) and the variable condenser lens position (c
b. Changing projection lens sets.
(1) Removal. Rotate the projection lens set approximately onequarter
turn until it is disengaged, and remove it from the printer.
If the projection lens set does not turn easily, slightly loosen the
adjusting screw (figure 23).
(2) Replacement. Hold the replacement projection lens set so that its
straight sides are parallel to the long sides of the baseboard; insert the
projection lens set in the printer and rotate it approximately onequarter
turn to lock it in position.
c. Changing variable condenser lens position.
(1) Open the access door.
(2) Slide out the variable condenser lens.
(3) Slide the variable condenser lens into the correct position (a