Canon T 90 - Manual (Page 184)

Caring for Your Camera
As with any precision instrument proper care
and maintenance involve a few simple rules in
addition to common sense. Observing these few
rules will keep your T90 in top condition at all
times-
We recommend that you clean yourT90 periodi­
cally using the tools listed below.
Cleaning tools: Blower brush, Cleaning fluid,
Cleaning tissue. Silicone cloth.
(1) To clean the lens surface and the viewfin­
der:
Blow off dust with the blower brush and
then gently wipe the lens surface with a
lens cleaning tissue which has been mois­
tened with a few drops of lens cleaner.
(2) To clean the reflecting mirror and the focus­
ing screen:
Use only a blower brush. If more cleaning is
necessary, NEVER attempt to do it yourself
but take it to an authorized Canon service
facility.