Lenovo ThinkPad W520 Hardware Maintenance Manual - Page 3
Contents, General checkout - power adapter
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Contents About this manual iii Chapter 1. Safety information 1 General safety 1 Electrical safety 2 Safety inspection guide 3 Handling devices that are sensitive to electrostatic discharge 3 Grounding requirements 4 Safety notices (multilingual translations 4 Laser compliance statements (multilingual translations 17 Chapter 2. Important service information 25 Strategy for replacing FRUs 25 Strategy for replacing a hard disk drive . . . 25 Important notice for replacing a system board 26 How to use error codes 26 Strategy for replacing FRUs for CTO, CMV, and GAV 26 Product definition 26 FRU identification for CTO, CMV, and GAV products 27 Chapter 3. General checkout . . . . . 29 What to do first 29 Checkout guide 31 System supporting the Lenovo ThinkVantage Toolbox program and the PC-Doctor for DOS diagnostics program 31 System supporting the Lenovo diagnostics programs 35 Power system checkout 37 Checking the ac power adapter 37 Checking operational charging 38 Checking the battery pack 38 Checking the backup battery 39 Chapter 4. Related service information 41 Restoring the factory contents by using Recovery Disc Set 41 Passwords 42 Power-on password 42 Hard-disk password 42 Supervisor password 43 How to remove the power-on password . . . 43 © Copyright Lenovo 2011, 2012 How to remove the hard-disk password . . . 43 Power management 44 Screen blank mode 44 Sleep (standby) mode 44 Hibernation mode 45 Symptom-to-FRU index 45 Numeric error codes 46 Error messages 47 Beep symptoms 48 No-beep symptoms 49 LCD-related symptoms 49 Intermittent problems 49 Undetermined problems 50 Chapter 5. Installing and configuring RAID 51 Supported RAID levels 51 Configuring the system UEFI BIOS to enable embedded SATA RAID functionality 51 Creating RAID volumes 52 Deleting RAID volumes 52 Chapter 6. Status indicators . . . . . 53 Chapter 7. Fn key combinations . . . 57 Chapter 8. FRU replacement notices 61 Screw notices 61 Retaining serial numbers 62 Restoring the serial number of the system unit 62 Retaining the UUID 63 Reading or writing the ECA information . . . 63 Chapter 9. Removing and replacing a FRU 65 Before servicing ThinkPad T520, T520i, and W520 66 1010 Battery pack 66 1020 Serial Ultrabay Enhanced device or travel bezel 67 1030 DIMM slot cover 68 1040 DIMM (bottom slot 69 1050 Hard disk drive slot cover, hard disk drive (HDD) and HDD rubber rails or solid state drive (SSD) and storage converter 71 1060 Keyboard 72 1070 DIMM (upper slot 76 i