SAFETYINFORMATION
General guide
1.Observetheoriginalcircuitduringmaintenance.ifshort
circuitoccurs, changetheover-hot ordamagedcomponents.
2.Observealltheprotectivedeviceaftermaintenance,such
aswhethertheshieldingcoverorpaperisassembledwell.
3.Toavoidelectricshock,pleaseinspectelectricityleakage
aftermaintenance
Lowzetapotentialleakinginspection
1.TakeoutACcordand connect apiece ofwirebetweentwo
legsoftheoutlet.
2.UseGearRx10Kofthevoltmetertomeasurethespares
onACoutletandexposedmetallicpartwithshortcircuit.
Theresistancebetweenscrewcap,controlshaftshouldbe
unlimited.
uF
ACvoltage table
tohavediscovermetal
accessoryofequipment
creepage checking circuit
coldwater
canal earthing）
picture 1
High zeta potential leakage inspection
.Asillustrated1,ConnectResistorwith1.5K,10Wand
capacitor0.15betweenexposedmetallicpartanddeviceof
fineconnectiontotheearth(waterpipeetc.).
2.Plug-inACcorddirectlytoACoutlet.Donotinspectwith
shieldadaptor.
3.Utilize 1000ormoresensitivevoltmetertomeasure
alternatingvoltage.
4.TurnbacktheACplug-infromACoutlettheniteratethe
inspection asabove.
5.Inspectthevoltageoftheresistorbetweenotherexposed
metallicpartsandtheearthwiththesameway.
6.Thevoltagemustnot beoverthan0.75Vrmsatanypoints
ontheresistor.Electricleakageshouldnotbeover0.5mA
whenprocessinghighvoltageleakagetestingthrough
DeviceavoidingES(ElectricSusceptible)
InfluenceofESD (ElectricSusceptibleDischarge
exceededtherestrainedfigure,electricshockshouldbe
possiblysuffered.Domaintaintheunit andinspectonce
morebeforereturntotheuser.
Device avoidingESinfluenceofESD.
Somesolidsemi-conductordevicesareeasytobe
damagedbystaticelectricity.Thesedevicesaregenerally
calledESdevice.ThetypicaldevicesareIC,fieldeffect
component andsemi-conductorlaserdiode.
Thefollowingtechnologyhelpstoabatethedangerof
ESDonbodybeforehandleanysemi-conductoror
semi-conductorcomponent.OrweartheESDbangleavailed
fromthemarkettoeliminatethethreatenofstaticelectricity
onhumanbody.
2.PuttheelectronicpartswithESdeviceonthesurfaceof
conductorsuchasaluminumfoil aftertakethemout inorder
toprotectstaticelectricityfromaccumulationandexplosion.
3.SolderordisassembleESdevicethroughironconnecting
theearth.
4.Utilizedeviceonlyanti-staticelectricitytodisassemble
solderingtin.Non-antistaticelectricitydevice(ESC
protection)willreleaseESthatdamageESdevice.
5.Donotusechemicalvolatilereleasingstaticelectricity
thatleadstodamageESdevice
6.Unless preparationforpre-assemblinghasbeenmade,do
nottakeouttheESdevice tobechangedfromtheprotective
packing(mostofthechangedESdevicesarepacked
togetherwithanti-staticelectricalfoamorsimilarelectric
material,besides,countermeasuresfordown-leadshort
circuitaretaken.).
7.Protectivematerial shouldconnect themodelorthecircuit
componenttobeassembledinitbeforetakingoutthe
protectivematerialfromtheESdevice.
Note:donot bearelectricitytothemodel orthecircuit,and
payattentiontoall theothersafetyinformation.
8.WhendisassemblingandreplacingtheESdevice,tryto
reduce bodymovement (Or,themovementoflegs,the
frictionoffibrousofclothes,orelevatingthelegsfromthe
floorwillgeneratestaticelectricityESD, causingdamageto
theESdevice.).
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