CAUTION
No part of raster should be masked by opaque area. If scanning spot is
masked out of view of PMT, spot will slow down, possibly burning CRT phos-
p h o r .
e. Focusing.
The printer is focused in two ways:
T h e e l e c t r o n i c f o c u s a d j u s t s t h e s i z e o f t h e C R T l i g h t
defines the resolution of the spot on the print stage.
e l e c t r o n i c a l l y a n d o p t i c a l l y .
spot, and the optical focus
A f i n e e l e c t r o n i c f o c u s w i ll
generally decrease the useful life of the CRT; therefore, the minimum spot size is a
f a c t o r y s e t t i n g .
f . A d j u s t C R T o p t i c a l s p o t s i z e.
Death or serious
while working on
present when the
WARNING
injury may occur if safety precautions are not observed
energized equipment.
Voltages in excess of 10 kV are
MASTER POWER switch is on.
Never have printer hood down
condition will damage PMT.
( 1 ) R a i s e p r i n t e r h o o d.
CAUTION
with power on and normal room lights on. This
(2) Set MODE switch to TEST.
(3) Set EXPOSURE INDEX switch to 1000.
( 4 ) T u r n o f f a l l v a n l i g h t i n g e x c e p t a l l o w a b l e s a f e l i g h t s.
(5) Turn on MASTER POWER switch.
(6) Set RASTER edge controls to maximum stretch both horizontally and
v e r t i c a l l y .
( 7 ) P l a c e p i e c e o f t r a n s l u c e n t m a t e r i a l ( m a t t e ) o n p r i n t s t a g e.
(8)
Close
and
latch
hood.
(9) Open lower cabinet door.
(10) Look up at print stage from about lens level, and screw lens in or out
until projected image on print stage becomes focused.
(11) Screw lens in or out until projected image goes slightly out of focus.
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TM5-6675-319-14
