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IBM T520I, W520 manual Safety information

Models: T520I W520

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Install Parts list Error codes Password Status indicators Wire Voltage V dc Supported RAID configurations Symptom-to-FRU index Diagnostics Interactive Tests Keyboard bezel assembly

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Chapter 1. Safety information 19

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IBM T520I, W520 manual Safety information

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Contents

ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Page ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Third Edition April Copyright Lenovo Contents Locations About this manual Page General safety Safety informationElectrical safety Safety inspection guide Grounding requirements Safety notices multilingual translationsSafety information ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Perigo Perigo Safety information Vorsicht Vorsicht ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Safety information ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Safety information ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Laser compliance statement multilingual translations ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Safety information ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Safety information ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Strategy for replacing FRUs Important service informationHow to use error message Strategy for replacing a hard disk driveImportant notice for replacing a system board General Announce Variant GAV FRU identification for CTO, CMV, and GAV productsThinkPad T520, T520i, and W520 Hardware Maintenance Manual What to do first General checkoutCheckout guide Diagnostics using PC-Doctor for DOSTesting the computer Utility Diagnostics Interactive TestsLenovo ThinkVantage Toolbox Hardware InfoApplicable test FRU testsPower system checkout Pin Voltage V dc Checking the battery packChecking the ac adapter Checking operational chargingChecking the backup battery Wire Voltage V dcTerminal Voltage V dc Restoring the factory contents by using Recovery Disc Set Related service informationPasswords Power-on passwordHard-disk password Supervisor password How to remove the power-on passwordHow to remove the hard-disk password Power management Screen blank modeSleep standby mode Symptom-to-FRU index Hibernation modeNumeric error codes Error messages Beep symptoms No-beep symptoms LCD-related symptomsIntermittent problems Undetermined problems RAID Level 0 RAID 0 Striped disk array Installing and configuring RAIDSupported RAID configurations Creating RAID volumesDeleting RAID volumes Status indicators Indicator Meaning Indicator Meaning ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Key combination Description Fn key combinationsFor Windows Vista and Windows XP For WindowsPower Option in the Control Panel or use the Power Manager ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Screw notices FRU replacement noticesMTM on rear label Retaining serial numbersRestoring the serial number of the system unit Retaining the UuidEeprom Reading or writing the ECA informationThinkPad T520, T520i, and W520 Hardware Maintenance Manual Removing and replacing a FRU Before servicing ThinkPad T520, T520i, and W520 Battery packSerial Ultrabay Enhanced device or travel bezel For access, remove this FRU Battery packDimm slot cover Dimm bottom slot For ThinkPad T520 and T520i For ThinkPad W520 ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Step Screw quantity Color Torque KeyboardWhen installing the keyboard, do as follows Removing and replacing a FRU Dimm upper slot Installation steps of keyboardRemoval steps of Dimm upper slot PCI Express Mini Card for wireless LANRemoval steps of PCI Express Mini Card for wireless LAN When installing Removal steps of PCI Express Mini Card for wireless WAN Removal steps of mSATA Removal steps of ExpressCard blank bezel or ExpressCard Keyboard bezel assemblyRemoval steps of keyboard bezel assembly Bluetooth daughter card BDC-3.0 Backup battery Smart Card or Smart Card dummy spacer Removal steps of Smart Card Speaker assembly Removal steps of speaker assembly Removal steps of thermal module Thermal moduleFor Switchable Graphics models For Integrated Graphics models For Workstation models 1160 CPURemoval steps of CPU LCD unitStep Screw cap Screw quantity Color Torque M2 × 4 mm, wafer-head, nylon-coated Black 181 Nm Kgfcm Base cover assembly Removal steps of base cover assembly 1190 I/O sub card Removal steps of I/O sub card Important notices for handling the system board Important notices for RAID settingLocation of major sensitive components on the system board Removal steps of system board and magnesium structure frame LCD bezel assembly LED sub card LCD cable, camera cable, LCD panel, and hinges Integrated cameraLCD unit LCD bezel assembly Removing and replacing a FRU Antenna kit and LCD rear cover assembly Removal steps of antenna kit and LCD rear cover assembly ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Front view LocationsRear view Bottom view ThinkPad T520, T520i, and W520 Hardware Maintenance Manual Parts list Self-service CRUsOptional-service CRUs Overall CRU CRU FRU Overall FRU noCRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU CRU LCD FRUs FRU ThinkPad T520, T520i and W520 LCD FRU no CRU CRU CRU CRU CRU Language FRU no Miscellaneous parts AC adapters Power cords Region Recovery discs Windows 7 Home Basic 32 bit DVDsLanguage Windows 7 Home Premium 64 bit DVDsWindows 7 Professional 32 bit DVDs 4281-CTO 4282-CTO, 29x, 3Px 4284-CTO Windows 7 Professional 64 bit DVDsTool Common service toolsAppendix A. Notices Trademarks Electronic emissions noticesPage 0A6007802