Samsung HT-E5550 - Copyright; Licence

1.Precaution
1.Precaution
FollowthesesafetyinstructionswhileservicingtheESDtopreventdamageandtoprotectagainstpotentialhazards
suchaselectricalshockandX-rays.
1.1.SafetyPrecautions
1)Whenreinstallingthechassisanditsassemblies,besuretorestorealloftheprotectivedevices,includingthecontrol
knobsandthecompartmentcovers.
2)Makesurethattherearenocabinetopeningsthroughwhichpeople(particularlychildren)canmakecontactwith
dangerousinternalcomponents.
3)DesignAlterationWarning:
Neveralteroraddtothemechanicalorelectricaldesignoftheunit.
Example:Donotaddauxiliaryaudioorvideoconnectors.Suchalterationsmightcreateasafetyhazard.
Also,anydesignchangesoradditionswillvoidthemanufacturer’swarranty.
4)LeakageCurrentHotCheckFigure1.1
ACLeakageTest:
WARNING
Donotuseanisolationtransformerduringthistest.Usealeakage-currenttesterorameteringsystemthatcomplies
withAmericanNationalStandardsInstitute(ANSIC101.1,LeakageCurrentforAppliances),andUnderwriters
Laboratories(ULPublicationUL1410,59.7).
Withtheunitcompletelyreassembled,plugtheACcorddirectlyintoa120VACoutlet.Withtheunit’spowerswitched
fromtheONtotheOFFposition,measurethecurrentbetweenaknowngroundandallexposedmetalparts.
KnownGrounds-Earth
KnownMetalparts-screwheads,metalcabinets,etc.
DEVICE
UNDER
TES T
LEAKAGE
CURRENT
TES TER
TES T ALL
EXPO S ED METAL
SU RFACES
2-WIRE CORD
ALSO TES T WITH
PLUG REVER S ED
(US ING AC
ADAPTER P LUG
AS R EQ UIRED)
EARTH
GROUND
(READING
SH OULD NOT BE
ABOVE 0.5mA)
Figure1.1ACLeakageTest
1-1Copyright©1995-2012SAMSUNG.Allrightsreserved.