Lenovo 33472YU, S230U manual Safety information

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Chapter 1. Safety information 15

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Contents ThinkPad S230u Hardware Maintenance ManualFirst Edition September Copyright Lenovo Contents Appendix A. Notices Iii About this manualIv Hardware Maintenance Manual General safety Safety informationElectrical safety Safety inspection guide Grounding requirements Safety notices multilingual translationsSafety 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 Before replacing parts Important service informationStrategy for replacing FRUs Select Drivers & SoftwareHow to use error message Dynamic Configure To Order CTOImportant notice for replacing a system board Click Warranty & Services Click Check Warranty Status Using PEWFRU identification for CTO, CMV, and GAV products Custom Model Variant CMVClick Product & Parts Detail Click Parts & AccessoriesWhat to do first General checkoutFollowing are not covered under warranty Lenovo Solution CenterCheckout guide Quick test programsUefi diagnostic program Bootable diagnostic programsTests Tools Power system checkout Checking the ac power adapterClick Lenovo Bootable Diagnostics Checking the backup battery Checking the battery packWire Voltage V dc Checking operational chargingHardware Maintenance Manual Restoring the factory contents by using Recovery Disc Set Related service informationRefreshing the computer Passwords Power-on passwordHard-disk password How to remove the power-on password Supervisor passwordHow to remove the hard-disk password Select Power-On PasswordSleep mode Power managementHibernation mode Select Master HDPWireless off mode Symptom-to-FRU indexNumeric error codes 0190 Charge the battery pack Symptom or error FRU or action, in sequence 01890191 Run the ThinkPad Setup program, and then save 0199 Run the ThinkPad Setup program, and then saveError messages No-beep symptomsBeep symptoms Intermittent problems LCD-related symptomsUndetermined problems Reseat the LCD connectorsHardware Maintenance Manual Indicator Meaning Status indicatorsIndicator Meaning Special key Description Special keysSpecial key Description Locating computer controls, connectors, and indicators LocationsFront view Rear view Bottom viewLocating FRUs and CRUs CRU statement for customers Major FRUs and CRUs Description Self-service CRU Optional-serviceCRU LCD FRUs Hinge Button board Looking up FRU informationHardware Maintenance Manual Screw notices FRU replacement noticesPlastic to plastic 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 General guidelines Removing or replacing a FRUBefore servicing the computer Disabling the built-in batteryRemoving the SIM card 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 When installing PCI Express Mini Card for wireless LANRemoval 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 Proximity sensors Important notices for replacing a battery packRemoval 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 Removal steps of DC-in connector 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 Removal steps of LCD panel Button boardRemoval steps of button board Integrated cameraHinge 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 Trademarks Electronic emissions noticesPage 1P0B48943

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