User's Guide
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1CœSSIbIe.
30
tums c1ockwisc. Double-check that the beamspliucr
is
(ully
retracted, giving you access to the
top
surface
of
the sereen.
With Jens c1eaner applied
10 a 6 inch wooden Q-tip. reach in and
gently clean
Ihis surface. making
cenain
la
angle the shaft
of
the
Q-lip
as far (rom the cdge
of
the benmspliuer as possible.
The
beamsplitter is an extremely thin and fmgile glass; aoy con-
tact whatsoever wi
ll
mas! likely break il. Thereforc:, if lrus vie
w-
iog sereen surfa
ce
does not appear dirty
or
if
you do not
have
the
right
too1s,
do not cJean the s
urfa
ce
in
this (ashion.
There is an alternative means
of
cleaning Ihis surface which is a
bit time-consuming, yel mueh safer and very effective. By
removing the
CCD
cover and head, as detailed in section 14.7
ln
s
talling
the
CC
D
Head
, there is direct aecess tO the
top
of
the
sereen from the side. Becau
se
the beamspliuer silS weil
abav
e
the t
op
surface
of
the sereen, there is no danger whatsoever
of
contacting il.










