-!).4%.!.#%
4UBEREPLACEMENT
!FTEREXTENDEDPERIODSOFUSECHECKTHEUNITFORDEGRADATIONOFTHEXENON
mASHTUBE4HISCANBESEENASADARKENINGOFTHETUBEWHICHWILLAPPEAR
ATTHEBASEANDGRADUALLYPROGRESSUPWARDSOVERTIME
4HEXENONmASHTUBEMAYBEREPLACEDBYACOMPETENTENGINEERUSINGTHE
PROCEDUREOUTLINEDBELOW
7ARNING!SHIGHVOLTAGESAREPRESENTDURINGNORMALOPERATIONOFTHE
STROBEWAITATLEASTMINUTESAFTERSHUTTINGOFFTHEPOWERBEFORESERVICING
THEUNIT
$ISCONNECTTHEPOWERTOTHEUNIT
5NSCREWTHEOFFSCREWSHOLDINGTHELENSASSEMBLYTOTHEBASE
ENCLOSURE
'ENTLYLIFTTHELENSASSEMBLYAWAYFROMTHEBASE
2EMOVETHEOFFSCREWSANDSPRINGWASHERSHOLDINGTHEELECTRONICS
ASSEMBLYINPOSITION+EEPTHESCREWSANDSPRINGWASHERSINASAFE
ACCESSIBLEPLACE
2EMOVETHEINNERFRESNELLENSBYUNSCREWINGTHEOFFNUTSHOLDINGITIN
POSITION
(OLDTHETUBEBYITSBASEANDREMOVEITFROMTHESOCKETUSINGA
ROCKINGMOTION&ITNEWTUBEINTOPOSITIONENSURINGITISCORRECTLYSEATED
INTHESOCKET
2EPLACETHEINTERNALFRESNELLENSENSURINGTHElXINGNUTSAREFULLY
TIGHTENED
2EPLACETHEELECTRONICSASSEMBLYUSINGTHEOFFSCREWSANDSPRING
WASHERSENSURINGTHERETAININGSTRAPISCORRECTLYPOSITIONEDSUCHTHAT
ITDOESNOTCOMEINTOCONTACTWITHANYELECTRONICCOMPONENTSOR0#"
TRACKS
2EPLACETHELENSASSEMBLYONTOTHEBASEENCLOSUREANDFULLYTIGHTEN
THEOFFCAPTIVECOVERSCREWS%NSURETHEORINGISCORRECTLYSEATED
DURINGREASSEMBLY
$URINGTHEWORKINGLIFEOFTHEUNITITSHOULDREQUIRELITTLEORNO
MAINTENANCE(OWEVERIFABNORMALORUNUSUALENVIRONMENTALCONDITIONS
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