9.5Cleaningthedisplaycase
Thedisplayunitisasealedunitanddoesnotrequireregular
cleaning.Ifitisnecessarytocleantheunit,followthisbasic
procedure:
1.Switchoffthepowertothedisplay.
2.Wipethedisplaywithaclean,softcloth(amicrobreclothis
ideal).
3.Ifnecessary,useisopropylalcohol(IPA)oramilddetergent
toremovegreasemarks.
Note:DoNOTuseIPAoranyothersolventordetergenton
thescreenitself.
Note:Incertainconditions,condensationmayappearinside
thedisplayscreen.Thiswillnotharmtheunit,andcanbe
clearedbypoweringonthedisplayforashorttime.
9.6Cleaningthedisplayscreen
Acoatingisappliedtothedisplayscreen.Thismakesitwater
repellent,andpreventsglare.Toavoiddamagingthiscoating,
followthisprocedure:
1.Switchoffthepowertothedisplay.
2.Rinsethescreenwithfreshwatertoremovealldirtparticles
andsaltdeposits.
3.Allowthescreentodrynaturally.
4.Ifanysmearsremain,verygentlywipethescreenwitha
cleanmicrobrecleaningcloth(availablefromanopticians).
44
i60