Lenovo S230U, 33472YU manual Major FRUs and CRUs, Description Self-service CRU Optional-service

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Major FRUs and CRUs

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	No		Description	Self-service CRU	Optional-service
					CRU

			LCD unit	No	No
	1		LCD unit	No	No

			Speaker assembly	No	No
	2		Speaker assembly	No	No

			Keyboard bezel	No	No
	3		Keyboard bezel	No	No

			Thermal fan assembly	No	No
	4		Thermal fan assembly	No	No

			DC-in connector	No	No
	5		DC-in connector	No	No

			Base cover assembly	No	No
	6		Base cover assembly	No	No

48Hardware Maintenance Manual

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Contents Hardware Maintenance Manual ThinkPad S230uFirst Edition September Copyright Lenovo Contents Appendix A. Notices About this manual IiiIv Hardware Maintenance Manual Safety information General safetyElectrical safety Safety inspection guide Safety notices multilingual translations Grounding requirementsSafety information Hardware Maintenance Manual Safety information Perigo Perigo Vorsicht Vorsicht Vorsicht Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Strategy for replacing FRUs Important service informationBefore replacing parts Select Drivers & SoftwareHow to use error message Dynamic Configure To Order CTOImportant notice for replacing a system board FRU identification for CTO, CMV, and GAV products Using PEWClick Warranty & Services Click Check Warranty Status Custom Model Variant CMVClick Parts & Accessories Click Product & Parts DetailGeneral checkout What to do firstCheckout guide Lenovo Solution CenterFollowing are not covered under warranty Quick test programsUefi diagnostic program Bootable diagnostic programsTests Tools Power system checkout Checking the ac power adapterClick Lenovo Bootable Diagnostics Wire Voltage V dc Checking the battery packChecking the backup battery Checking operational chargingHardware Maintenance Manual Related service information Restoring the factory contents by using Recovery Disc SetRefreshing the computer Passwords Power-on passwordHard-disk password How to remove the hard-disk password Supervisor passwordHow to remove the power-on password Select Power-On PasswordHibernation mode Power managementSleep mode Select Master HDPWireless off mode Symptom-to-FRU indexNumeric error codes 0191 Run the ThinkPad Setup program, and then save Symptom or error FRU or action, in sequence 01890190 Charge the battery pack 0199 Run the ThinkPad Setup program, and then saveError messages No-beep symptomsBeep symptoms Undetermined problems LCD-related symptomsIntermittent problems Reseat the LCD connectorsHardware Maintenance Manual Status indicators Indicator MeaningIndicator Meaning Special keys Special key DescriptionSpecial key Description Locating computer controls, connectors, and indicators LocationsFront view Rear view Bottom viewLocating FRUs and CRUs CRU statement for customers Description Self-service CRU Optional-service Major FRUs and CRUsCRU LCD FRUs Looking up FRU information Hinge Button boardHardware Maintenance Manual Plastic to plastic FRU replacement noticesScrew notices Logic card to plasticRetaining serial numbers Restoring the serial number of the system unitMTM on rear label Retaining the Uuid Reading or writing the ECA informationProduct ID on rear label Hardware Maintenance Manual Removing or replacing a FRU General guidelinesRemoving the SIM card Disabling the built-in batteryBefore servicing the computer Hard disk drive or solid-state driveRemoving or replacing a FRU Keyboard Removal steps of keyboardStep Screw quantity Color Torque Removing or replacing a FRU PCI Express Mini Card for wireless LAN When installingRemoval steps of PCI Express Mini Card for wireless LAN Removal steps of PCI Express Mini Card for wireless WAN Removal steps of mSATA solid-state drive Keyboard bezel, backup battery, and speaker assembly Removal steps of keyboard bezelStep Screw cap Screw quantity Color Torque M2 × 3 mm, wafer-head, nylon-coated Silver 181 Nm Kgf-cm Hardware Maintenance Manual Battery pack Important notices for replacing a battery pack Proximity sensorsRemoval steps of proximity sensors Removal steps of thermal fan assembly LCD unit Removal steps of LCD unit When installing M2.5 × 3 mm, wafer-head, nylon-coated Silver 181 Nm Kgf-cm DC-in connector Removal steps of DC-in connectorSystem board and base cover assembly Removal steps of system board and base cover assemblyImportant notices for handling the system board Applying labels to the base cover Following illustration shows the location of each label Button bezel LCD panelRemoval steps of button bezel Button board Removal steps of LCD panelIntegrated camera Removal steps of button boardHinge Removal steps of integrated cameraRemoval steps of hinge When installing Removal steps of wireless antenna assembly Removing or replacing a FRU Hardware Maintenance Manual Appendix A. Notices Electronic emissions notices TrademarksPage 1P0B48943

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