User manual

6
ideapad 320-17IKB/ideapad 320H-17IKB/ideapad 320L-17IKB/ideapad 320R-17IKB/
ideapad 320E-17IKB/ideapad 320-17ISK/ideapad 320H-17ISK/ideapad 320L-17ISK/
ideapad 320R-17ISK/ideapad 320E-17ISK Hardware Maintenance Manual
Handling devices that are sensitive to electrostatic discharge
Anycomputerpartcontaining transistorsorintegrated circuits(ICs)shouldbe
consideredsensitivetoelectrostaticdischarge(ESD).ESDdamagecanoccur
whenthere isadifferenceincharge betweenobjects.Protect againstESD
damagebyequalizingthechargesothatthemachine,thepart,theworkmat,
andthepersonhandlingthepartareallatthesamecharge.
Notes:
1. Use product-specic ESD procedures when they exceed the requirements noted
here.
2. Make sure that the ESD protective devices you use have been certied (ISO
9000) as fully effective.
WhenhandlingESD-sensitiveparts:
• Keepthepartsinprotectivepackagesuntiltheyareinsertedintotheproduct.
• Avoidcontactwithotherpeople.
• Wearagroundedwriststrapagainstyour skintoeliminatestaticonyour
body.
• Preventthepartfromtouchingyourclothing.Mostclothingisinsulativeand
retainsachargeevenwhenyouarewearingawriststrap.
• Usetheblackside ofagroundedworkmat toprovideastatic-freework
surface.ThematisespeciallyusefulwhenhandlingESD-sensitivedevices.
• Selectagroundingsystem,suchasthoselistedbelow,toprovideprotection
thatmeetsthespecicservicerequirement.
Note:
The use of a grounding system to guard against ESD damage is desirable but not
necessary.
– AttachtheESDgroundcliptoanyframeground,groundbraid,orgreen-
wireground.
– Whenworkingonadouble-insulatedorbattery-operatedsystem,usean
ESDcommongroundorreferencepoint.Youcanusecoaxorconnector-
outsideshellsonthesesystems.
– Usetheroundgroundprongoftheacplugonac-operatedcomputers.
Grounding requirements
Electricalgroundingofthecomputerisrequiredforoperatorsafetyandcorrect
systemfunction.Propergrounding oftheelectricaloutletcan beveriedby a
certiedelectrician.