
Chapter1SafteyDescription
electricitymaydischargeelectricitythroughacomponentwhen
he/shetouchestheconductorandcausingdamage.
�Wearanantistaticwriststrap(theotherendofwriststrapmust
bewellgrounded)beforetouchingtheequipmentorholding
aplug-inboard,circuitboard,IntegratedCircuit(IC)chipor
otherdevices,topreventhumanstaticelectricityfromdamag-
ingsensitivecomponents.
�Aresistorover1MΩshouldbeconnectedinseriesonthecable
betweentheantistaticwriststrapandthegroundingpoint,to
protecttheoperatoragainstaccidentalelectricshock.Resis-
tanceover1MΩislowenoughtodischargestaticvoltage.
�Theantistaticwriststrapusedmustbesubjecttoregular
check.Donotreplacethecableofanantistaticwriststrap
withanyothercable.
�Donotcontactstatic-sensitiveboardswithanyobjectthateas-
ilygeneratesstaticelectricity.Forexample,frictionofpackage
bag,transferboxandtransferbeltmadefrominsulationplas-
ticmaycausestaticelectricityoncomponents.Dischargeof
staticelectricitymaydamagecomponentswhentheycontact
ahumanbodyortheground.
�Boardshouldonlycontactmaterialssuchasantistaticbag.
Keepboardsinantistaticbagsduringstorageandtransporta-
tion.
�Dischargestaticelectricityofthetestdevicebeforeuse,that
is,groundthetestdevicerst.
�DonotplacetheboardnearastrongDCmagneticeld,such
asthecathode-raytubeofamonitor .Keeptheboardatleast
10cmaway.
HoistingHeavy
Objects
Warning:
Whenhoistingheavyobjects,ensurethatnobodyisstandingor
walkingunderthehoistedobject.
�Ensurethehoistercanmeethoistingrequirementswhendis-
assemblingheavyequipment,ormovingandreplacingequip-
ment.
�Theoperatormustbedulytrainedandqualiedforhoisting
operations.
�Hoistingtoolsmustbeinspectedandcompletebeforeservice.
�Makesurethathoistingtoolsarexedrmlyonasufciently
securedobjectorwallbeforethehoistingoperation.
�Givebrieforalinstructionsduringhoistingoperationstopre-
ventanymishap.
Unplugging/Plug-
gingaBoard
�Neverplugaboardwithexcessiveforce,toensurethatthe
pinsonthebackplanedonotgetdeformed.
�Plugtheboardrightintotheslotandmakesureboardcircuit
facesdonotcontacteachotherlestanyshortcircuitmayoccur .
�Keephandsofftheboardcircuit,components,connectorsand
cabletroughwhenholdingaboard.
ConfidentialandProprietaryInformationofZTECORPORATION5