12 
CLEANING 
To  get  the  brightest,  sharpest  screen  images,  keep  the 
optical system 
of 
your 
projector 
clean.  Dust 
or 
fingerprints 
on  the  projection  .
or 
condenser  lens  will  reduce  the 
brightness 
of 
the 
screen  image and  will  cause 
it 
to appear 
unsharp 
or 
low  in  contrast. 
Projection 
lens 
Turn  the focus  knob  clockwise 
until 
the  lens  is 
out 
as 
far 
as 
it 
will go. 
Ca
.refully move 
the 
focus knob toward the side 
of 
the 
projector 
as  you 
withdraw 
the projection  lens.  Blow 
any 
dust 
or 
dirt 
from 
the lens. 
With 
KODAK 
Lens  Cleaning  Paper 
(or 
equivalent) 
or 
a 
soft,  clean,  lintless  cloth,  gently wipe  the 
front 
and  rear 
surfaces 
of 
the  lens. 
If 
moisture 
is  required,  breathe  on 
the lens  surface 
or 
use  a 
drop 
of 
KODAK 
Lens  Cleaner  (or 
equivalent) 
on 
the paper 
or 
cloth. 
Replace the lens 
by 
again moving the focus knob toward 
the  side 
of 
the 
projector 
and 
guiding 
the  lens  back 
into 
position. Insert the  lens 
far 
enough  into its recess 
so 
that 
the gear teeth 
on 
the 
side 
of 
the lens barrel will 
be 
engaged 
by the gear 
on 
the focusĀ· knob shaft. 
Condenser 
lens, 
Heat-Absorbing Glass, and Mirror 
CAUTION: 
Heat-absorbing  glass  may  shatter. 
Hand le on ly 
with 
gloves. Keep glass covered with 
a cloth 
or 
other 
material while out 
of 
projector. 
Turn 
the 
projector 
bottom  side  up.  Open  the 
LAMP 
DOOR 
as  described  on  page  11.  Push 
the 
LENS 
RETAINER 
down-
ward 
until 
it 
is  free 
of 
its 
retaining 
clip;  then  raise  the 
retainer as 
far 
as 
it 
will go. Carefully 
lift 
out 
the 
CONDENSER 
LENS 
and the 
HEAT
-
ABSORBING 
GLASS
, and  gently  place 
them 
on a 
soft 
cloth. 
Clean  both  sides 
of. 
the  condenser  lens  and 
the 
heat-
absorbing glass with 
KODAK 
Lens  Cleaning Paper 
(or 
equiv-
alent) 
or 
a  soft,  clean,  lintless  cloth. 
Be 
careful  not  to 
leave 
fingerprints 
on 
any 
of 
the surfaces. Replace the lens 
and  heat-absorbing  glass 
in 
their 
original  locations,  with 
the 
flatter 
side 
of 
the  condenser  lens  toward  the 
front 
of 
the 
projector
. 
Gently clean  the surface 
of 
the 
MIRRO
R with 
KODAK 
Le
ns 
Cleaning  Paper 
(or 
equivalent) 
or 
a 
soft
,  clean,  lintless 
cloth  moistened with 
KODAK 
Lens  Cleaner. 
Close and fasten the lamp door.