Safety information | Lenovo 33472YU, S230U manual

Chapter 1. Safety information 19

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Lenovo 33472YU, S230U manual Safety information

Contents

ThinkPad S230u Hardware Maintenance Manual First Edition September Copyright Lenovo Contents Appendix A. Notices Iii About this manual Iv Hardware Maintenance Manual General safety Safety information Electrical safety Safety inspection guide Grounding requirements Safety notices multilingual translations Safety 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 & Software Dynamic Configure To Order CTO How to use error messageImportant 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 CMV Click Product & Parts Detail Click Parts & Accessories What to do first General checkout Following are not covered under warranty Lenovo Solution CenterCheckout guide Quick test programs Bootable diagnostic programs Uefi diagnostic programTests Tools Checking the ac power adapter Power system checkoutClick Lenovo Bootable Diagnostics Checking the backup battery Checking the battery packWire Voltage V dc Checking operational charging Hardware Maintenance Manual Restoring the factory contents by using Recovery Disc Set Related service information Refreshing the computer Power-on password PasswordsHard-disk password How to remove the power-on password Supervisor passwordHow to remove the hard-disk password Select Power-On Password Sleep mode Power managementHibernation mode Select Master HDP Symptom-to-FRU index Wireless off modeNumeric 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 save No-beep symptoms Error messagesBeep symptoms Intermittent problems LCD-related symptomsUndetermined problems Reseat the LCD connectors Hardware Maintenance Manual Indicator Meaning Status indicators Indicator Meaning Special key Description Special keys Special key Description Locations Locating computer controls, connectors, and indicatorsFront view Bottom view Rear viewLocating FRUs and CRUs CRU statement for customers Major FRUs and CRUs Description Self-service CRU Optional-service CRU LCD FRUs Hinge Button board Looking up FRU information Hardware Maintenance Manual Screw notices FRU replacement noticesPlastic to plastic Logic card to plastic Restoring the serial number of the system unit Retaining serial numbersMTM on rear label Reading or writing the ECA information Retaining the UuidProduct ID on rear label Hardware Maintenance Manual General guidelines Removing or replacing a FRU Before servicing the computer Disabling the built-in batteryRemoving the SIM card Hard disk drive or solid-state drive Removing or replacing a FRU Removal steps of keyboard KeyboardStep Screw quantity Color Torque Removing or replacing a FRU When installing PCI Express Mini Card for wireless LAN Removal 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 Removal steps of keyboard bezel Keyboard bezel, backup battery, and speaker assemblyStep 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 pack Removal 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 connector Removal steps of system board and base cover assembly 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 LCD panel Button bezelRemoval steps of button bezel Removal steps of LCD panel Button board Removal steps of button board Integrated camera Removal steps of integrated camera HingeRemoval 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