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戴尔dell5420-7420拆机示意图因为dell5420和7420的构造设计是一样的，只是配置丌同。。最直接的差别就是显卡，一个是GT630一个是GT640ProductOverviewFeaturesInspiron™7420/14RInspiron™N4110ProcessortypeIntel®Corei3Intel®Corei5Intel®Corei7(SandyBridgeandIvyBridgeProcessors)ClickheretolearnmoreIntel®Corei3Intel®Corei5Intel®Corei7(SandyBridgeandIvyBridgeProcessors)ClickheretolearnmoreSystemChipsetIntel®HM77ChipsetClickheretolearnmoreIntel®HM77ChipsetClickheretolearnmoreMemory1333MHzDDR3-SandyBridgeProcessors1600MHzDDR3-IvyBridgeProcessorsClickheretolearnmore1333MHzDDR3-SandyBridgeProcessors1600MHzDDR3-IvyBridgeProcessorsClickheretolearnmoreMemorymin/max2GB/8GBLCDtypes14.0HDWLEDTrueLife(1366X768)14.0HD+WLEDTrueLife(optional)(1600X900)Clickheretolearnmore14.0HDWLEDTrueLife(1366X768)14.0HD+WLEDTrueLife(optional)(1600X900)ClickheretolearnmoreGraphicsIntegratedIntelHDGraphics3000(SandyBridgeProcessors)IntelHDGraphics4000(IvyBridgeProcessors)DiscretenVidiaGeForceGT640MClickheretolearnmoreIntegratedIntelHDGraphics3000(SandyBridgeProcessors)IntelHDGraphics4000(IvyBridgeProcessors)DiscretenVidiaGeForceGT630MClickheretolearnmoreAudioConexantCX20672-217AudiocontrollerClickheretolearnmoreConexantCX20672-217AudiocontrollerClickheretolearnmoreHarddriveinterfaceSATAHDD2.5mSATASSDClickheretolearnmoreSATAHDD2.5mSATASSDClickheretolearnmoreMediabayoptions12.7mmSATAtrayloadDVD+/-RW,BDComboandBD-RE12.7mmSATAtrayloadDVD+/-RW,BDComboandBD-REWirelessoptions1703WiFi+Bluetooth4.0HalfMiniCard1704WiFi+Bluetooth4.0HalfMiniCardWLAN1901WiFi+Bluetooth4.0HalfMiniCardIntel®2230WiFi+Bluetooth4.0HalfMiniCardClickheretolearnmore1703WiFi+Bluetooth4.0HalfMiniCard1704WiFi+Bluetooth4.0HalfMiniCardWLAN1901WiFi+Bluetooth4.0HalfMiniCardIntel®2230WiFi+Bluetooth4.0HalfMiniCamera720pHD(1280x720)+DigitalMicrophoneClickheretolearnmore720pHD(1280x720)+DigitalMicrophoneNIC(LOM)10/100/1000NIC(withoutLED)Clickheretolearnmore10/100/1000NIC(withoutLED)ClickheretolearnmoreI/Ocardslots8-in-1MediaCardReaderClickheretolearnmoreConnectors1xVGA1xHDMI3xUSB3.01xUSB3.0withPowerShareNIC(withoutLED)1xMicrophone/stereoin1xheadphone/speakerout8-in-1MediaCardReader1xVGA1xHDMI3xUSB3.01xUSB3.0withPowerShareNIC(withoutLED)1xMicrophone/stereoin1xheadphone/speakerout8-in-1MediaCardReaderOperatingsystemMicrosoftWindows®7ACadapter65W/90WClickheretolearnmoreBattery6-Cell2.2AHr/48WhrbatterypackClickheretolearnmore6-Cell2.2AHr/48WhrbatterypackClickheretolearnmoreWeightconfigurabletolessthan2.40kg/5.30lbconfigurabletolessthan2.40kg/5.30lb前面/正面FeaturesonthefrontsideofthechassisoftheInspiron™7420/14Rlaptopareasfollows:ChassisFrontViewFeaturesandLocations1.PowerIndicator.电源指示灯2.HardDriveactivitylight.硬盘读写指示灯3.Batterystatuslight-IndicatestheBatteryStatus.电池充电指示灯4.Wirelessstatuslight-IndicatesiftheWirelessisturnedon/off.无线指示灯5.8-in-1MediaCardReader-Providesafastandconvenientwaytoviewandsharedigitalphotos,music,andvideosstoredonamediacard.Formoreinformation,seethesectiononMediaCardReader.读卡器FrontLCDArea前面屏幕区域Featuresonthefrontside(LCDArea)ofthechassisoftheInspiron™7420/14Rlaptopareasfollows:ChassisFrontViewFeaturesandLocations1.BuiltinMicrophone-Usedtocaptureaudiosounds.麦克风接口2.BuiltinCamera-Usedtocapturemovingimagesandsnapshots.摄像头3.LCD.FrontKeyboardandPalmrestAreaFeaturesonthefrontside(KeyboardandPalmrestarea)ofthechassisoftheInspiron™7420/14Rlaptopareasfollows:ChassisFrontViewFeaturesandLocations1.Powerbutton-Usedtopoweronthelaptop.开关2.Keyboard.键盘3.Touchpad.触摸板4.LeftTouchpadbutton.5.RightTouchpadbutton.6.DellAudioWithPresetSwitchbutton.7.DellInstantLaunchbutton.8.WindowsMobilityCenterbutton.ChassisLeft左边FeaturesontheleftsideofthechassisoftheInspiron™7420/14Rlaptopareasfollows:Chassisleftviewfeaturesandlocations1.Poweradapterconnector2.VGAconnector-Usedtoconnectanexternaldisplay.3.ExhaustGrill.4.HDMIconnector-Connectorportfordevicessupportingaudio/videosignalsinHDMIformat.5.USB3.0connectorwithPowerShare-UsedtoconnectpoweredUSBdevicessuchasprinter.6.USB3.0connector-UsedtoconnectUSBdevices,suchasflashmemory,amouse,keyboardorprinter.7.Microphoneconnector-Usedtoconnectanexternalmicrophonetothesystem.8.Headphone/Microphonecomboconnector-Usedtoconnectaudioperipherals.Attachheadphonesorspeakerstotheconnector.ChassisRightFeaturesontherightsideofthechassisoftheInspiron™7420/14Rlaptopareasfollows:Chassisrightviewfeaturesandlocations1.USB3.0port-UsedtoconnectUSBdevices,suchasflashmemory,amouse,keyboardorprinter.2.OpticalDriveactivitylight.3.OpticalDriveejectbutton.4.USB3.0port-UsedtoconnectUSBdevices,suchasflashmemory,amouse,keyboardorprinter.5.Networkconnector(RJ-45)-Usedtoconnectthelaptoptoanetwork.6.Kensingtonlockslot-Usedtoattachacommerciallyavailableantitheftdevicetothelaptop.下面开始拆机。。。左右两边卡扣推开下面拆硬盘和内存的盖子。。去掉螺丝就可以了。下面拆内存和硬盘拔掉数据线，乊后去掉固定的四颗螺丝拆光驱。。去掉固定的螺丝。。一拉就出来了拆键盘，有些配置如果有背光的，那拆的时候要注意背光的数据线下面拆C壳。第一次拆可能有点紧，最好慢慢来，因为太重了可能会导致卡扣断了。去掉背面图示的螺丝，建议去掉背面的所有的螺丝，以免有遗漏拔掉触摸板数据线右上角的功能键的数据线左上角的开关数据线拔掉屏线去掉图示的螺丝。。丌要有遗漏C壳的卡扣有图示这么多，从左上角或者右上角开始翘起，，拆电源线。拔掉线，去掉螺丝，就可以拿掉了下面随便那屏幕拿下来，这样好拆主板.去掉固定的螺丝，拔掉天线拆风扇，太简单了，。，拔掉接头，就可以拿掉了拆无线网卡，也很简单，去固定螺丝拆喇叭，拔掉接口，注意喇叭的连接线。比较细拆主板。。去掉螺丝就可以拿起来了拆小板。去掉固定