HP 8167A, Руководство пользователя, Страница: 235 / 262

E
Cleaning Lenses
Some lenses have special coatings that are sensitive to solvents , grease , liquid and mechanical
abrasion. T ake extra care when cleaning lenses with these coatings .
Lens assemblies consisting of several lenses are not normally sealed. Therefore , use as little
alcohol as possible , as it can get between the lenses and in doing so can change the properties of
projection.
Preferred
Procedure
1. Clean the lens by rubbing a new , dry cotton-swab over the surface using a
small circular movement.
2. Blow away any remaining lint with compressed air .
Procedure for
Stubborn Dirt
Use this procedure particularly when there is greasy dirt on the lens:
1. Moisten a new cotton-swab with isopropyl alcohol.
2. Clean the lens by rubbing the cotton-swab over the surface using a small
circular movement.
3. Using a new , dry cotton-swab remove the alcohol, any dissolved sediment
and dust.
4. Blow away any remaining lint with compressed air .
Cleaning Procedures E-9